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      "body": "**Supporting Education in a Suitcase: Investments and donations**\n\nEducation in a Suitcase, EIAS, is a non-profit organisation which uses grants and donations to fund tablets, software development and educational content for distribution to low-income regions.\n\nEducation in a Suitcase currently supports several hundred students in Kenyan schools, from primary to university level, with a goal to expand these numbers every year.\n\nThe most important part of the content provided is inside the tutor-web educational software. This note describes options for individuals and organisations to support EIAS. This support can be in the form of grants, donations and investments in addition to assistance with development of software or content.\n\nA cryptocurrency, the Smileycoin or SMLY has been set up to reward students who work in the tutor-web. EIAS has an income stream of Smileycoins, provided directly by miners who mine this cryptocurrency.\n\n**Grants**\n\nEIAS actively seeks grants from various organisations. In addition to EIAS applications, grants for tutor-web development are obtained through several projects only loosely linked to EIAS.\n\n**Donations**\n\nProspective donors can support EIAS directly through the EIAS donation page at http://educationinasuitcase.com/donation/en/index.html which accepts most credit cards.\n\nDonors are offered some Smileycoin as perks for their support. This is not a formal sale since there no fixed exchange rate; it is merely a token of appreciation.\n\n**Investments**\n\nEIAS has an income stream of Smileycoins and these can be sold and bought on several cryptocurrency exchanges. Obviously, increased demand leads to a higher price and greater value to the EIAS income stream.\n\nAn investor can thus support EIAS simply by purchasing Smileycoins on any market. This is different from classical donations in several ways:\n\n- The donation is not simply a one-off donation but should be viewed as a longer-term investment.\n- The investor purchases a number of SMLY in accordance with the amount invested and the current market price of SMLY.\n- The investor is in control of the purchase and is free to resell the Smileycoins at any time.\n- Smileycoins in excess of 25 M, stored in a single SMLY address, also provide dividends, paid out in SMLY. In July 2018 these form about 18% interest p.a.\n- In light of the volatile price of cryptocurrencies a long-term view is essential, which goes hand-in-hand with the need for a longer term view of supporting EIAS.\n\n**Smileycoin donations and dividends**\n\nThe Smileycoin in mined like most cryptocurrencies and the mining process generates new coins. Unlike most, however, the miner only retains a small fraction, 10%, of the new coins. The rest are split evenly between investors and Education in a Suitcase. In addition, whenever students do not redeem their SMLY earned in the tutor-web, those SMLY get automatically donated to EIAS. Donations of SMLY are therefore a constant revenue stream for Education in a Suitcase.\n\nIt is for this reason that any SMLY purchase is also support for EIAS.",
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      "body": "@@ -6287,8 +6287,228 @@\n amounts!\n+%0A%0ANote that you can also use %60sendwithmessage%60 to get the exchange rate. Just send %22get rate buy LTC from SMLY%22 with 1000 SMLY to %60BLca5pTafbgH7p4ZF3ZzrPSrx6swafXAYf%60 and the ATM will happily send back the exchange rate.\n",
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      "body": "@@ -5867,16 +5867,428 @@\n t for addresses.\n+%0A%0A# Finally%0A%0AThe ATM looks up the rate on coinmarketcap and inserts a small spread so as not to lose money.  This is fine for low amounts.%0A%0AEventually a scheme will be implemented whereby the exchange rate will be changed in a nonlinear manner for high deposits/withdrawals so as to ensure that the ATM wallet does not go empty for either coin. The details have yet to be worked out. %0A%0AJust stick to low amounts!\n",
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      "body": "**Caveat**: This is just for fun! There is no sysadmin. Make sure you only use low amounts. There are no guarantees that this works. You are using this at your own risk. But it is fun 😃 and may even be useful\n\nAn ATM has been set up so Smileycoin and Litecoin users can do the following:\n\n* Send Smileycoin to a predefined SMLY address and get back Litecoin\n* Get a pair of (SMLY,LTC) addresses so that sending to either one will convert to the other currency and send back to the user\n\n\n# Part A: Converting Smileycoin to Litecoin\n\n**Step 1**: Backup your wallet.dat file and stop your wallet.\n\n**Step 2**: Get a development version of the Smilecyoin wallet from github. For this you need to know how to compile a wallet for Linux, Windows or OSX. Follow the download directions at tutor-web.info/smileycoin but make sure you set git to use the `sendwithmessage` thread.\n\n**Step 3**: Start the wallet. \n\n**Step 4**: If you have not done so already, get to know the command line options to `smileycoin-cli`. Under Linux these are usually given on the shell command (to `smileycoin-cli`) but under Windows and OSX you may want to give them in the debug console window. Start by using the command “getinfo” just to see that it works. Make sure your wallet is connected and up-to-date by checking the height (block count). Your screen should look something like this\n\n\n![smly-snap.png](https://steemitimages.com/DQmeKoQsuRGhMBBFPQ5XRbso3pLzs2GwokfHYd5SKZAPUbu/smly-snap.png)\n\n**Step 5**: Make sure you have some SMLY in your wallet. You will need a bit.\n\n**Step 6**: Open the Litecoin wallet, get an address and copy it to the clipboard.\n\n![ltc-snap.png](https://steemitimages.com/DQmNYRQQq8o5jYypzoT2GK2KPfsutuQQB5QEx7VnHZ2dk53/ltc-snap.png)\n\n**Step 7**: In the Smileycoin wallet, type the following command into the command window using your own LTC address:\n\n![send-cmd.png](https://steemitimages.com/DQmWqyLKmfZ3p25UFDG4avh81xp2VBTp8Mv8mYUGb5kwL14/send-cmd.png)\n\n\nNote that the message **has to be** of the form \n`sendwithmessage BLca5pTafbgH7p4ZF3ZzrPSrx6swafXAYf 2000 \"Buy LTC <yourLTCaddress>\"`\nand all other messages will be ignored. Only this SMLY address will work.\n\nThe magic: If everything has been done correctly, the ATM will see this SMLY transaction in the blockchain, read the message, convert the SMLY to LTC equivalents and send the LTC to your LTC address.\n\nYou can now repeat Step 7 as often as you like, to automagically convert SMLY to LTC.\n\n# Part B: Converting Litecoin to Smileycoin\n\n**Step 1**: Get some SMLY to be able to communicate\n\n* A ![Steemit tutorial](https://steemit.com/blockchain/@gstefans/more-messing-around-with-the-blockchain-an-atm-for-smly) has been set up to do this by sending a SMLY address encoded in a LTC transaction. If you have no means of obtaining SMLY, this is a way to get the first batch of SMLY. \n* Alternatively, just buy SMLY on an exchange \n* or donate to Education in a Suitcase who will give you some SMLY as perks.\n\nIf you are comfortable with the technical details of the Steemit tutorial, then you need go no further. This demonstrates how you can convert Litecoin to Smileycoin. It does get very technical though and the following is much easier, once you have some SMLY.\n\n**Step 2**: Get the ATM to send you a LTC address for deposits.\n\nYou need to own 4000 SMLY to start this process.\n\nGo into the SMLY command window and type the following command into the command window using your own LTC address:\n\nNote that the message **has to be** of the form \n`sendwithmessage BLca5pTafbgH7p4ZF3ZzrPSrx6swafXAYf 4000 \"Send LTC SMLY addresses <yourLTCaddress>\"`\n\nThe amount is important: It needs to cover the retransmission of two deposit addresses! There will be no response from the ATM if the amount is less than 4000 SMLY.\n\nNow wait until you see an incoming transaction.\n\n**Step 3**: Read the messages coming from the ATM. If the request for SMLY addresses has been sent correctly, the ATM will send a transaction back.\n\nOnce you see an incoming transaction, make a note of it and ask to see the transaction using the `gettransaction` command, something like this (replace with your transaction ID): \n`gettransaction 36dae66ca57bc8923ff8d5baddd2327bc65edd851600618f1b76afa0ff98bef7`\n\nThe result will include a lot of gibberish, but the important part is in a line labelled “rawmessage” as in the following example:\n    {\n     \"amount\" : -3500.00000000,\n     \"fee\" : -3.00000000,\n     \"confirmations\" : 517,\n     \"blockhash\" : \"e2218e6ae8373cedb541fd111fa26f3d98a1f5161996dbbbb59c4923f2206048\",\n     \"blockindex\" : 2,\n     \"blocktime\" : 1517573843,\n     \"txid\" : \"36dae66ca57bc8923ff8d5baddd2327bc65edd851600618f1b76afa0ff98bef7\",\n     \"walletconflicts\" : [\n     ],\n     \"time\" : 1517573490,\n     \"timereceived\" : 1517573490,\n     \"rawmessage\" : \"deposit address, LTC: LfivT1EQQcwhnL9ab3jwYaFEzqtHkW2RXL and SMLY: BNgLMJ8wdzLeTULnKx2dXYdzGj5yn35JDq   \",\n     \"details\" : [\n         {\n\nThe message gives two deposit addresses. In this case, the user has been allocated `LfivT1EQQcwhnL9ab3jwYaFEzqtHkW2RXL` as a Litecoin deposit address and `BNgLMJ8wdzLeTULnKx2dXYdzGj5yn35JDq` as a SMLY deposit address. \n\nIf Smileycoins are sent to `BNgLMJ8wdzLeTULnKx2dXYdzGj5yn35JDq` the ATM will return Litecoin to the address specified in the original request for addresses (`LKHh2ug4vX9V6SAyY1Fo9gv7sMEnjAG3mc` above). \n\nSimilarly, if Litecoin are sent to `LfivT1EQQcwhnL9ab3jwYaFEzqtHkW2RXL` the ATM will return Smileycoin to the SMLY address which was originally used to send the request for addresses.",
      "json_metadata": "{\"tags\":[\"crypto\",\"education\",\"smileycoin\",\"litecoin\"],\"image\":[\"https://steemitimages.com/DQmeKoQsuRGhMBBFPQ5XRbso3pLzs2GwokfHYd5SKZAPUbu/smly-snap.png\",\"https://steemitimages.com/DQmNYRQQq8o5jYypzoT2GK2KPfsutuQQB5QEx7VnHZ2dk53/ltc-snap.png\",\"https://steemitimages.com/DQmWqyLKmfZ3p25UFDG4avh81xp2VBTp8Mv8mYUGb5kwL14/send-cmd.png\",\"https://steemit.com/blockchain/@gstefans/more-messing-around-with-the-blockchain-an-atm-for-smly\"],\"app\":\"steemit/0.1\",\"format\":\"markdown\"}",
      "parent_author": "",
      "parent_permlink": "crypto",
      "permlink": "on-line-atm-looking-for-testers",
      "title": "on-line ATM: looking for testers"
    }
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    {
      "author": "gstefans",
      "body": "# Messing around with Litecoin and Smileycoin\n\nLitecoin has adopted all the same features as Bitcoin and  the Smileycoin was developed for fun in the first place so let's mess around with the two a little bit. We will work with the raw chains so make sure you are willing to get your hands dirty. \n\nRemember that this is just for fun and **at your own risk**. Do not send a lot of coins to any address mentioned here.\n\n![smiley3-320.jpg](https://steemitimages.com/DQmUheYqtNKYSNm3Shp8TYcRyZviDyrPMvDjZppQuuGtQ2Z/smiley3-320.jpg)\n\nAn ordinary ATM is a hole-in-the-wall where you stick your credit card and out comes money. You can also insert money. There are also ATMs where you can select different currencies.\n\nHere is an example of an ATM which gives you SMLY when you insert LTC. We will do this on a Mac. It should also work on a Windows machine and under Linux.\n \nYou are going to send LTC to a Litecoin address and get back SMLY to a Smileycoin address. Pretty cool stuff (but this is NOT an atomic swap).\n\n# Background\n\nFirst make sure that you have both a Litecoin wallet and a Smileycoin wallet.  Get a Smileycoin address to receive the SMLY coming back. We'll use BL6dZnnFMXZUGXKMZ3fcJm48Gz4DidYKzJ -- but make sure to use your own. \n\nWe are going to **encode** the SMLY address in a Litecoin transaction. A Litecoin transaction normally just moves LTC to a destination address. Some hidden programming magic behind this particular address will read the transaction, figure out how many SMLY correspond to the amount you sent and ship those SMLY back to your SMLY wallet.\n\nThis is where you start your Litecoin wallet and open the Console window (see below if you have not done this before). Give the **listunspent** command and find an unspent transaction output to use as input for your Litecoin transmission. Remember: You **do not want to spend a lot of LTC here -- this is completely at your own risk**. \n\nMake a note of the amount, the transaction id (TxID) and the vout. \n\nIn the transaction example below, the TxID is `42189ba739eef0a75ce4acfdd9249eb86f22d14c44da5b7b439f96c238614801`, the vout is 2 and the amount is 0.43240803 LTC.\n\nThe unspent amount we are about to use will be split into three parts: (1) The amount actually sent to the destination, (2) Change sent back to our own address and whatever is left over becomes the (3) Transaction fee.\n\nWe're going to be careful not to spend too much, since we are just having fun and there really is no guarantee this will work. So let's assume we are going to spend 0.02 LTC to get SMLY and that we need 0.005 LTC for a transaction fee (see below for more on transaction fees). The remainder of the UTXO becomes our change.\n\n# The addresses\n\nFrom above you have a Smileycoin address for receiving the SMLY. \n\nYou need a LTC address for receiving the change. Just go into the LTC Console and type `getnewaddress` to get an address.\n![](https://steemitimages.com/DQmRXiEHfVP8z2Lgeza84X8Hc3tPtjDX7jathE72KhC8uC3/image.png)\nFor our example we will use `LfhYbb6cQBS2Zdh1ieDWmg2Zk42LqBCJF9` as the change address, but of course you will replace this by your own.\n\n# Sending data in the blockchain\nThis is where the fun starts. First take your SMLY address and convert it to hex so that it can be placed as data into the Litecoin transaction. [This web page](https://www.rapidtables.com/convert/number/ascii-to-hex.html) will do that conversion and should look like this when you are done:\n![](https://steemitimages.com/DQmVG1TNQX7aJh34r7JRodv35UZt7hX4oRiQoenQAV3t1wT/image.png)\nNote the innocent looking box labelled `optional delimiter string`: This box starts off containing a space which you will want to delete.\n\nCopy the output, `424c36645a6e6e464d585a5547584b4d5a3366634a6d3438477a34446964594b7a4a` for using in a bit.\n\n# The structure of the transaction\n\nOur Litecoin transaction will consist of\n    0.40740803 - the LTC input, vout 2 from TxID 42189ba739eef0a75ce4acfdd9249eb86f22d14c44da5b7b439f96c238614801\n    0.02 LTC - the LTC amount to be sent to the recipient, LTC address `Lcb1iTTGxHacPNK3rdZeyZY5y2wS7Bcn1z`\n    0.38240803 - the LTC change to be sent back to us, LTC address `LfhYbb6cQBS2Zdh1ieDWmg2Zk42LqBCJF9`\n    0.005 LTC - the transaction fee\n    data - the hex coded SMLY address, `424c36645a6e6e464d585a5547584b4d5a3366634a6d3438477a34446964594b7a4a`\n\nNotice that the sums do add up: `0.40740803=(0.02+0.38240803+0.005)`\n\nWhen you decide to run this example yourself, remember to replace *everything* by your own amounts and addresses, *except* for the recipient, LTC address `Lcb1iTTGxHacPNK3rdZeyZY5y2wS7Bcn1z` which is the address of the LTC-SMLY ATM.\n\n\n\nAt this stage you have all the addresses, all the amount and the hex representation of the SMLY address. It is time to construct the Litecoin transaction. Go back into Console of the Litecoin wallet and get ready for some fancy stuff.\n\n# Creating the transaction\n\nThe wallets have a collection of commands which can be used for all sorts of fancy stuff. We will be using the `createrawtransaction` command. Within the Litecoin wallet this command allows the inclusion of data, which is what we will use to embed the SMLY address. The full command, to be entered in the LTC Command window is:\n\n\n`createrawtransaction '[{\"txid\":\"c7ee53dee8a23e1ab59af4de95648d966ba4dd8072eacee6fb54faf77e48174b\",\"vout\":2}]' '{\"Lcb1iTTGxHacPNK3rdZeyZY5y2wS7Bcn1z\":0.020,\"data\":\"424c36645a6e6e464d585a5547584b4d5a3366634a6d3438477a34446964594b7a4a\",\"LgjZJhveCEAitsgVL9v1VtQoUQC4udy6tQ\":0.38240803}'`\n\nand this will result in a long hex string:\n`02000000014b17487ef7fa54fbe6ceea7280dda46b968d6495def49ab51a3ea2e8de53eec70200000000ffffffff0380841e00000000001976a914be75c168f39485841c54fc39ad1823427e95a11088ac0000000000000000246a22424c36645a6e6e464d585a5547584b4d5a3366634a6d3438477a34446964594b7a4a23824702000000001976a914ebf3f4ee9c3e02467d21845afe3088278f15bb4888ac00000000`\nNow we are almost ready. This string just needs to be signed by you, the user:\n\n`signrawtransaction 02000000014b17487ef7fa54fbe6ceea7280dda46b968d6495def49ab51a3ea2e8de53eec70200000000ffffffff0380841e00000000001976a914be75c168f39485841c54fc39ad1823427e95a11088ac0000000000000000246a22424c36645a6e6e464d585a5547584b4d5a3366634a6d3438477a34446964594b7a4a23824702000000001976a914ebf3f4ee9c3e02467d21845afe3088278f15bb4888ac00000000`\n\nThis returns information with both the signed version of the transaction and an indication of whether the transaction was successfully signed:\n`{\n  \"hex\": \"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\",\n  \"complete\": true\n}`\n\nThis transaction is now ready for sending.\n\nBefore sending it, you can change it to a readable form and inspect the elements:\n`decoderawtransaction 02000000014b17487ef7fa54fbe6ceea7280dda46b968d6495def49ab51a3ea2e8de53eec7020000006a47304402203185aff1d86b8bea7c724602880ad287ae141b6c9f74daad033a4d73315ea51f02206c65d413db0635f1d534bd635452c987e7588e5de634b71e74f3071f054bfaa5012102aa8f3f6c06a41af3fb9d0000ebbba695d373c221b4bf78fd97687e57193cb1b8ffffffff0380841e00000000001976a914be75c168f39485841c54fc39ad1823427e95a11088ac0000000000000000246a22424c36645a6e6e464d585a5547584b4d5a3366634a6d3438477a34446964594b7a4a23824702000000001976a914ebf3f4ee9c3e02467d21845afe3088278f15bb4888ac00000000`\n\nWithin the transaction you will see the SMLY return address hex-coded as an OP_RETURN element:\n`\"asm\": \"OP_RETURN 424c36645a6e6e464d585a5547584b4d5a3366634a6d3438477a34446964594b7a4a\"`\n\nNow all we need to do is to send the entire, signed, transaction:\n`sendrawtransaction 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`\n\nYou will want to look at the output from this command, as this is the TxID for the transaction which you just sent:\n`94cdeeaf0ae8799392a88347863b4a2b3493c33cc5f3b5d12392ecda86dc1eb5`\n\n\nThis transaction ID can be looked up in any **Litecoin** block explorer and is the proof that you send the transaction.\n\n\n# Behind the scenes\n\nBehind the scenes there is a computer somewhere running the litecoin wallet and a script inspecting any transactions which come to the LTC-SMLY ATM address, `Lcb1iTTGxHacPNK3rdZeyZY5y2wS7Bcn1z`. In this particular case, the script generated transaction `fe9a880c071d5a17bb0cebcbc2e92bf5a1ea77cdd0ebb9a45df21fff9b919627` on the Smileycoin blockchain. If you look this transaction up in a Smileycoin block explorer, you will see that a total of `69362.80 SMLY` were sent to SMLY address `BL6dZnnFMXZUGXKMZ3fcJm48Gz4DidYKzJ` as requested above.\n\n\n# PS More detail\n## Getting a SMLY address\nIn the Smileycoin wallet click on Receive and then on Receive payment. This will show you a new SMLY address. A SMLY address always starts with a capital B. Your screen should show something like this:\n\n![](https://steemitimages.com/DQmdVABJY4wPfrfJ4VeJyH9yMGrbLr1bYuuRFh3Zv7f5taA/image.png)\n\nWe will use this one: `BL6dZnnFMXZUGXKMZ3fcJm48Gz4DidYKzJ`\n\n## The Litecoin debugging window\nThe Litecoin GUI on a Mac has a Help button which gets you into the Debug window where you can find the Console button. You should see something like this:\n![](https://steemitimages.com/DQmXF2shj6C84dVSoZhNzMZ5tbBCScCoR8W8Aaf7E2vCkUz/image.png)\nIf you have some LTC in this wallet, you can simply type **listunspent** on the command line.  That will show you all **unspent transaction outputs** or UTXOs which you have. Just pick one of these.\n\nA typical UTXO looks like this\n`[\n  {\n    \"txid\": \"c7ee53dee8a23e1ab59af4de95648d966ba4dd8072eacee6fb54faf77e48174b\",\n    \"vout\": 2,\n    \"address\": \"LfhYbb6cQBS2Zdh1ieDWmg2Zk42LqBCJF9\",\n    \"account\": \"\",\n    \"scriptPubKey\": \"76a914e09a6843488e9aef8a34538a0a1d2eea780453c888ac\",\n    \"amount\": 0.40740803,\n    \"confirmations\": 3,\n    \"spendable\": true,\n    \"solvable\": true\n  }\n]\n`\n\nThe key items you are looking for are the **amount**, the **txid** and the **vout**.\n\nThe TxID is an identifier of a Litecoin transaction where you have received LTC, but a transaction typically contains multiple addresses (inputs and outputs). The **vout** is an identifier of the outputs from the transaction, which made it into your wallet. This output, which you are about to spend, will become the input to your next transaction.\n\nIn this example the TxID is `c7ee53dee8a23e1ab59af4de95648d966ba4dd8072eacee6fb54faf77e48174b`,the vout is 2 and the amount is 0.40740803 LTC.\n\n## Transaction fees\nTo see the typical LTC transaction fees needed, go to [this site](https://bitinfocharts.com/comparison/litecoin-transactionfees.html#3m)\n\nSMLY transaction fees are (at the time of this writing) 1 SMLY per Kb.\n\n## More stuff\n\nIf there is interest, the underlying scripts can be made available.",
      "json_metadata": "{\"tags\":[\"blockchain\",\"smileycoin\",\"litecoin\",\"atm\"],\"image\":[\"https://steemitimages.com/DQmUheYqtNKYSNm3Shp8TYcRyZviDyrPMvDjZppQuuGtQ2Z/smiley3-320.jpg\",\"https://steemitimages.com/DQmRXiEHfVP8z2Lgeza84X8Hc3tPtjDX7jathE72KhC8uC3/image.png\",\"https://steemitimages.com/DQmVG1TNQX7aJh34r7JRodv35UZt7hX4oRiQoenQAV3t1wT/image.png\",\"https://steemitimages.com/DQmdVABJY4wPfrfJ4VeJyH9yMGrbLr1bYuuRFh3Zv7f5taA/image.png\",\"https://steemitimages.com/DQmXF2shj6C84dVSoZhNzMZ5tbBCScCoR8W8Aaf7E2vCkUz/image.png\"],\"links\":[\"https://www.rapidtables.com/convert/number/ascii-to-hex.html\",\"https://bitinfocharts.com/comparison/litecoin-transactionfees.html#3m\"],\"app\":\"steemit/0.1\",\"format\":\"markdown\"}",
      "parent_author": "",
      "parent_permlink": "blockchain",
      "permlink": "more-messing-around-with-the-blockchain-an-atm-for-smly",
      "title": "More messing around with the blockchain: An ATM for SMLY"
    }
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{
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    {
      "author": "gstefans",
      "body": "# Messing around with Litecoin and Smileycoin\n\nLitecoin has adopted all the same features as Bitcoin and  the Smileycoin was developed for fun in the first place so let's mess around with the two a little bit. We will work with the raw chains so make sure you are willing to get your hands dirty. \n\nRemember that this is just for fun and **at your own risk**. Do not send a lot of coins to any address mentioned here.\n\n![smiley3-320.jpg](https://steemitimages.com/DQmUheYqtNKYSNm3Shp8TYcRyZviDyrPMvDjZppQuuGtQ2Z/smiley3-320.jpg)\n\nAn ordinary ATM is a hole-in-the-wall where you stick your credit card and out comes money. You can also insert money. There are also ATMs where you can select different currencies.\n\nHere is an example of an ATM which gives you SMLY when you insert LTC. We will do this on a Mac. It should also work on a Windows machine and under Linux.\n \nYou are going to send LTC to a Litecoin address and get back SMLY to a Smileycoin address. Pretty cool stuff (but this is NOT an atomic swap).\n\n# Background\n\nFirst make sure that you have both a Litecoin wallet and a Smileycoin wallet.  Get a Smileycoin address to receive the SMLY coming back. We'll use BL6dZnnFMXZUGXKMZ3fcJm48Gz4DidYKzJ -- but make sure to use your own. \n\nWe are going to **encode** the SMLY address in a Litecoin transaction. A Litecoin transaction normally just moves LTC to a destination address. Some hidden programming magic behind this particular address will read the transaction, figure out how many SMLY correspond to the amount you sent and ship those SMLY back to your SMLY wallet.\n\nThis is where you start your Litecoin wallet and open the Console window (see below if you have not done this before). Give the **listunspent** command and find an unspent transaction output to use as input for your Litecoin transmission. Remember: You **do not want to spend a lot of LTC here -- this is completely at your own risk**. \n\nMake a note of the amount, the transaction id (TxID) and the vout. \n\nIn the transaction example below, the TxID is `42189ba739eef0a75ce4acfdd9249eb86f22d14c44da5b7b439f96c238614801`, the vout is 2 and the amount is 0.43240803 LTC.\n\nThe unspent amount we are about to use will be split into three parts: (1) The amount actually sent to the destination, (2) Change sent back to our own address and whatever is left over becomes the (3) Transaction fee.\n\nWe're going to be careful not to spend too much, since we are just having fun and there really is no guarantee this will work. So let's assume we are going to spend 0.02 LTC to get SMLY and that we need 0.005 LTC for a transaction fee (see below for more on transaction fees). The remainder of the UTXO becomes our change.\n\n# The addresses\n\nFrom above you have a Smileycoin address for receiving the SMLY. \n\nYou need a LTC address for receiving the change. Just go into the LTC Console and type `getnewaddress` to get an address.\n![](https://steemitimages.com/DQmRXiEHfVP8z2Lgeza84X8Hc3tPtjDX7jathE72KhC8uC3/image.png)\nFor our example we will use `LfhYbb6cQBS2Zdh1ieDWmg2Zk42LqBCJF9` as the change address, but of course you will replace this by your own.\n\n# Sending data in the blockchain\nThis is where the fun starts. First take your SMLY address and convert it to hex so that it can be placed as data into the Litecoin transaction. [This web page](https://www.rapidtables.com/convert/number/ascii-to-hex.html) will do that conversion and should look like this when you are done:\n![](https://steemitimages.com/DQmVG1TNQX7aJh34r7JRodv35UZt7hX4oRiQoenQAV3t1wT/image.png)\nNote the innocent looking box labelled `optional delimiter string`: This box starts off containing a space which you will want to delete.\n\nCopy the output, `424c36645a6e6e464d585a5547584b4d5a3366634a6d3438477a34446964594b7a4a` for using in a bit.\n\n# The structure of the transaction\n\nOur Litecoin transaction will consist of\n    0.40740803 - the LTC input, vout 2 from TxID 42189ba739eef0a75ce4acfdd9249eb86f22d14c44da5b7b439f96c238614801\n    0.02 LTC - the LTC amount to be sent to the recipient, LTC address `Lcb1iTTGxHacPNK3rdZeyZY5y2wS7Bcn1z`\n    0.38240803 - the LTC change to be sent back to us, LTC address `LfhYbb6cQBS2Zdh1ieDWmg2Zk42LqBCJF9`\n    0.005 LTC - the transaction fee\n    data - the hex coded SMLY address, `424c36645a6e6e464d585a5547584b4d5a3366634a6d3438477a34446964594b7a4a`\n\nNotice that the sums do add up: `0.40740803=(0.02+0.38240803+0.005)`\n\nWhen you decide to run this example yourself, remember to replace *everything* by your own amounts and addresses, *except* for the recipient, LTC address `Lcb1iTTGxHacPNK3rdZeyZY5y2wS7Bcn1z` which is the address of the LTC-SMLY ATM.\n\n\n\nAt this stage you have all the addresses, all the amount and the hex representation of the SMLY address. It is time to construct the Litecoin transaction. Go back into Console of the Litecoin wallet and get ready for some fancy stuff.\n\n# Creating the transaction\n\nThe wallets have a collection of commands which can be used for all sorts of fancy stuff. We will be using the `createrawtransaction` command. Within the Litecoin wallet this command allows the inclusion of data, which is what we will use to embed the SMLY address. The full command, to be entered in the LTC Command window is:\n\n\n`createrawtransaction '[{\"txid\":\"c7ee53dee8a23e1ab59af4de95648d966ba4dd8072eacee6fb54faf77e48174b\",\"vout\":2}]' '{\"Lcb1iTTGxHacPNK3rdZeyZY5y2wS7Bcn1z\":0.020,\"data\":\"424c36645a6e6e464d585a5547584b4d5a3366634a6d3438477a34446964594b7a4a\",\"LgjZJhveCEAitsgVL9v1VtQoUQC4udy6tQ\":0.38240803}'`\n\nand this will result in a long hex string:\n`02000000014b17487ef7fa54fbe6ceea7280dda46b968d6495def49ab51a3ea2e8de53eec70200000000ffffffff0380841e00000000001976a914be75c168f39485841c54fc39ad1823427e95a11088ac0000000000000000246a22424c36645a6e6e464d585a5547584b4d5a3366634a6d3438477a34446964594b7a4a23824702000000001976a914ebf3f4ee9c3e02467d21845afe3088278f15bb4888ac00000000`\nNow we are almost ready. This string just needs to be signed by you, the user:\n\n`signrawtransaction 02000000014b17487ef7fa54fbe6ceea7280dda46b968d6495def49ab51a3ea2e8de53eec70200000000ffffffff0380841e00000000001976a914be75c168f39485841c54fc39ad1823427e95a11088ac0000000000000000246a22424c36645a6e6e464d585a5547584b4d5a3366634a6d3438477a34446964594b7a4a23824702000000001976a914ebf3f4ee9c3e02467d21845afe3088278f15bb4888ac00000000`\n\nThis returns information with both the signed version of the transaction and an indication of whether the transaction was successfully signed:\n`{\n  \"hex\": \"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\",\n  \"complete\": true\n}`\n\nThis transaction is now ready for sending.\n\nBefore sending it, you can change it to a readable form and inspect the elements:\n`decoderawtransaction 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`\n\nWithin the transaction you will see the SMLY return address hex-coded as an OP_RETURN element:\n`\"asm\": \"OP_RETURN 424c36645a6e6e464d585a5547584b4d5a3366634a6d3438477a34446964594b7a4a\"`\n\nNow all we need to do is to send the entire, signed, transaction:\n`sendrawtransaction 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`\n\nYou will want to look at the output from this command, as this is the TxID for the transaction which you just sent:\n`94cdeeaf0ae8799392a88347863b4a2b3493c33cc5f3b5d12392ecda86dc1eb5`\n\n\nThis transaction ID can be looked up in any **Litecoin** block explorer and is the proof that you send the transaction.\n\n\n# Behind the scenes\n\nBehind the scenes there is a computer somewhere running the litecoin wallet and a script inspecting any transactions which come to the LTC-SMLY ATM address, `Lcb1iTTGxHacPNK3rdZeyZY5y2wS7Bcn1z`. In this particular case, the script generated transaction `fe9a880c071d5a17bb0cebcbc2e92bf5a1ea77cdd0ebb9a45df21fff9b919627` on the Smileycoin blockchain. If you look this transaction up in a Smileycoin block explorer, you will see that a total of `69362.80 SMLY` were sent to SMLY address `BL6dZnnFMXZUGXKMZ3fcJm48Gz4DidYKzJ` as requested above.\n\n\n# PS More detail\n## Getting a SMLY address\nIn the Smileycoin wallet click on Receive and then on Receive payment. This will show you a new SMLY address. A SMLY address always starts with a capital B. Your screen should show something like this:\n\n![](https://steemitimages.com/DQmdVABJY4wPfrfJ4VeJyH9yMGrbLr1bYuuRFh3Zv7f5taA/image.png)\n\nWe will use this one: `BL6dZnnFMXZUGXKMZ3fcJm48Gz4DidYKzJ`\n\n## The Litecoin debugging window\nThe Litecoin GUI on a Mac has a Help button which gets you into the Debug window where you can find the Console button. You should see something like this:\n![](https://steemitimages.com/DQmXF2shj6C84dVSoZhNzMZ5tbBCScCoR8W8Aaf7E2vCkUz/image.png)\nIf you have some LTC in this wallet, you can simply type **listunspent** on the command line.  That will show you all **unspent transaction outputs** or UTXOs which you have. Just pick one of these.\n\nA typical UTXO looks like this\n`[\n  {\n    \"txid\": \"c7ee53dee8a23e1ab59af4de95648d966ba4dd8072eacee6fb54faf77e48174b\",\n    \"vout\": 2,\n    \"address\": \"LfhYbb6cQBS2Zdh1ieDWmg2Zk42LqBCJF9\",\n    \"account\": \"\",\n    \"scriptPubKey\": \"76a914e09a6843488e9aef8a34538a0a1d2eea780453c888ac\",\n    \"amount\": 0.40740803,\n    \"confirmations\": 3,\n    \"spendable\": true,\n    \"solvable\": true\n  }\n]\n`\n\nThe key items you are looking for are the **amount**, the **txid** and the **vout**.\n\nThe TxID is an identifier of a Litecoin transaction where you have received LTC, but a transaction typically contains multiple addresses (inputs and outputs). The **vout** is an identifier of the outputs from the transaction, which made it into your wallet. This output, which you are about to spend, will become the input to your next transaction.\n\nIn this example the TxID is `c7ee53dee8a23e1ab59af4de95648d966ba4dd8072eacee6fb54faf77e48174b`,the vout is 2 and the amount is 0.40740803 LTC.\n\n## Transaction fees\nTo see the typical LTC transaction fees needed, go to [this site](https://bitinfocharts.com/comparison/litecoin-transactionfees.html#3m)\n\nSMLY transaction fees are (at the time of this writing) 1 SMLY per Kb.\n\n## More stuff\n\nIf there is interest, the underlying scripts can be made available.",
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      "body": "# Messing around with the blockchain\nIf you have looked around just a tiny bit then you will have seen a lot of descriptions of how many things can be done \"on the blockchain\". But when you dig a little deeper you'll see that not much of this seems to be in actual use. \n\nOne reason for this is that users and developers of Bitcoin are extremely focussed on Bitcoin being a serious high-value coin. With Bitcoin likely exceeding 10 000 dollars today that also means it is not really a tool for messing around with. This is also seen in the responses of developers to people playing around with stuff like messages on the blockchain: It can be done but is seriously discouraged to the point where you need to be a fairly proficient programmer to use the feature to any extent. \n\nLitecoin does not have the same attitude problem, but has adopted all the same features as Bitcoin, and most of the restrictions, one by one. On the other hand Ethereum has been developed to do things totally differently. Again, Ethereum is not for playing with (and in spite of this it has a bit too many bugs for something as serious as smart business contracts).\n\nWhich leads us back to the low-value coins and particularly the Smileycoin, which was developed for fun in the first place! \n\n![smiley3-320.jpg](https://steemitimages.com/DQmUheYqtNKYSNm3Shp8TYcRyZviDyrPMvDjZppQuuGtQ2Z/smiley3-320.jpg)\n\nPlaying around is encouraged: A recent addition is the `sendwithmessage` command (accessible in the command window or on the Linux command line) which allows people to send messages encoded into the blockchain. Currently under development are methods to [announce intent for atomic swaps](https://tutor-web.info/news-1/announcing-intent-cross-chain-atomic-swap/) between arbitrary cryptocurrencies, using messages on the SMLY blockchain.\n\nBelow is an example of such playing around, namely an example of a double or nothing game on the SMLY blockchain. \n\n# Betting directly on the blockchain\n\nAn address has been set up for testing double or nothing games on the blockchain. Any number of Smileycoins sent to the SMLY address `BCJW4iZw7PechFHgtqqSdHmymjnFA6LjNJ` will set in motion a double or nothing game. The sender will receive either nothing or double the deposit.\n\n**Remember**: Never bet anything you can not afford to lose. Use very low amounts for testing. You have no way of knowing whether there is an individual in charge of the address or whether sending to it actually does what is intended. There is certainly no one around to guarantee that it works, there is no casino reception to complain to, no individual willing to claim responsibility *etc etc etc*. It is just for fun!\n\nThat said, the address can be\n[monitored using a blockchain explorer:](https://chainz.cryptoid.info/smly/address.dws?BCJW4iZw7PechFHgtqqSdHmymjnFA6LjNJ.htm) and you will note that the address was seeded using 25 M SMLY so it is a dividend-accruing address. Digging around a little bit you will also see both deposits and withdrawals. Of course you need to ignore all the 4500 SMLY deposits as those are dividend payments. Scanning the remaining transactions you can see  how some of the withdrawals correspond to twice the earlier deposits but only about half the deposits correspond to such withdrawals. This is exactly the nature of the double or nothing game.\n\n# Comments\n\nThings like this are quite easy to implement and tests are encouraged on the SMLY blockchain. Like many (most?) coins, the Smileycoin supports the `walletnotify` option in the configuration file `smileycoin.conf`. So on a Linux machine it is possible to insert a line of the form `walletnotify=/home/myname/mygame/MyGame %s` to have the wallet send every incoming transaction id to your choice of a script to analyse and respond to the transaction.\n\n# Future work\n\nDepending on how this is received, someone may want to set up a jackpot-style game. In the simplest version each participant submits a certain number of SMLY to a pre-specified address and at the end of the day the entire amount is sent to a single winner, drawn from the pool of participants. A marginally better version is to allow variable amounts and draw with probabilities proportional to the amounts.",
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      "title": "Double or nothing on the blockchain"
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      "body": "# Messing around with the blockchain\nIf you have looked around just a tiny bit then you will have seen a lot of descriptions of how many things can be done \"on the blockchain\". But when you dig a little deeper you'll see that not much of this seems to be in actual use. \n\nOne reason for this is that users and developers of Bitcoin are extremely focussed on Bitcoin being a serious high-value coin. With Bitcoin likely exceeding 10 000 dollars today that also means it is not really a tool for messing around with. This is also seen in the responses of developers to people playing around with stuff like messages on the blockchain: It can be done but is seriously discouraged to the point where you need to be a fairly proficient programmer to use the feature to any extent. \n\nLitecoin does not have the same attitude problem, but has adopted all the same features as Bitcoin, and most of the restrictions, one by one. On the other hand Ethereum has been developed to do things totally differently. Again, Ethereum is not for playing with (and in spite of this it has a bit too many bugs for something as serious as smart business contracts).\n\nWhich leads us back to the low-value coins and particularly the Smileycoin, which was developed for fun in the first place! \n\n![smiley3-320.jpg](https://steemitimages.com/DQmUheYqtNKYSNm3Shp8TYcRyZviDyrPMvDjZppQuuGtQ2Z/smiley3-320.jpg)\n\nPlaying around is encouraged: A recent addition is the `sendwithmessage` command (accessible in the command window or on the Linux command line) which allows people to send messages encoded into the blockchain. Currently under development are methods to [announce intent for atomic swaps](https://tutor-web.info/news-1/announcing-intent-cross-chain-atomic-swap/) between arbitrary cryptocurrencies, using messages on the SMLY blockchain.\n\nBelow is an example of such playing around, namely an example of a double or nothing game on the SMLY blockchain. \n\n# Betting directly on the blockchain\n\nAn address has been set up for testing double or nothing games on the blockchain. Any number of Smileycoins sent to the SMLY address `BCJW4iZw7PechFHgtqqSdHmymjnFA6LjNJ` will set in motion a double or nothing game. The sender will receive either nothing or double the deposit.\n\n**Remember**: Never bet anything you can not afford to lose. Use very low amounts for testing. You have no way of knowing whether there is an individual in charge of the address or whether sending to it actually does what is intended. There is certainly no one around to guarantee that it works, there is no casino reception to complain to, no individual willing to claim responsibility *etc etc etc*. It is just for fun!\n\nThat said, the address can be\n[monitored using a blockchain explorer:](https://chainz.cryptoid.info/smly/address.dws?BCJW4iZw7PechFHgtqqSdHmymjnFA6LjNJ.htm) and you will note that the address was seeded using 25 M SMLY so it is a dividend-accruing address. Digging around a little bit you will also see both deposits and withdrawals. Of course you need to ignore all the 4500 SMLY deposits as those are dividend payments. Scanning the remaining transactions you can see  how some of the withdrawals correspond to twice the earlier deposits but only about half the deposits correspond to such withdrawals. This is exactly the nature of the double or nothing game.\n\n# Comments\n\nThings like this are quite easy to implement and tests are encouraged on the SMLY blockchain. Like many (most?) coins, the Smileycoin supports the `walletnotify` option in the configuration file `smileycoin.conf`. So on a Linux machine it is possible to insert a line of the form `walletnotify=/home/myname/mygame/MyGame %s` to have the wallet send every incoming transaction id to your choice of a script to analyse and respond to the transaction.\n\n# Future work\n\nDepending on how this is received, someone may want to set up a jackpot-style game. In the simplest version each participant submits a certain number of SMLY to a pre-specified address and at the end of the day the entire amount is sent to a single winner, drawn from the pool of participants. A marginally better version is to allow variable amounts and draw with probabilities proportional to the amounts.",
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      "author": "gstefans",
      "body": "###Donations, education, non-profits and cryptocurrencies\n\n**Cryptocurrencies** are popular for donations for many reasons, ranging from anonymity (sort of) through ease of use. This has been stepped up a notch by hard-wiring donations into one cryptocurrency, described here.\n\n[**Education in a suitcase**!](http://educationinasuitcase.com/donation/en/index.html) is a non-profit, which raises funds for purchasing tablets and servers. Free educational material is loaded onto the computers and they are then donated to students in low-income regions, particularly Kenya. The main point is not the hardware or software, but the educational opportunities which come with having access to educational material.\n\n[**The tutor-web**!](http://tutot-web.net)provides free educational material, including math drills and this forms a part of the EIAS platform. In the case of remote regions, the math-drills are set up to work off-line.\n\n[**The Smileycoin**!](https://tutor-web.info/smileycoin) is a cryptocurrency which is used inside the tutor-web to reward students. Preliminary analyses indicate that SMLY rewards do indeed get students to work a bit harder on their studies.\n\n###Hard-wired donations\n\nChanges made to the SMLY in summer of 2017 included changes to the mining fee. Normally, when a miner finds a new block, the entire **coinbase** becomes the miner's reward. For the SMLY, however, the coinbase is split into three parts, 1000 SMLY for the **miner's fee**, 4500 for **dividends** and 4500 for **donations.** The dividends are paid in rotation to SMLY addresses which hold at least 25 million SMLY and this is done to encourage Smileycoin investment. The **donations are paid in rotation to 10 SMLY addresses which are owned by Education in a Suitcase**.\n\nSince this is now hardwired into the SMLY mining algorithm, EIAS gets 4500 SMLY for every single block which is mined by any miner. The addresses are hard-coded into the wallets and every wallet tests that this donation is enforced.\n\nIf one looks up any block generated after August 2017, the coinbase transaction of the block demonstrates how this works. Consider\n[block 268193!](https://chainz.cryptoid.info/smly/block.dws?268193.htm). Here one sees the 1000+4500+4500 structure in the first transaction.\n\nThe last part here is the donation, to SMLY address [BPVuYwyeJiXExEmEXHfCwPtRXDRqxBxTNW!](https://chainz.cryptoid.info/smly/address.dws?BPVuYwyeJiXExEmEXHfCwPtRXDRqxBxTNW.htm) and clicking on the link will show how this particular address has received millions of SMLY (23 million when this note was written in November 2017).\n\n###Utility\n\nThe utility of the donations will depend on the future development of the SMLY. The Smileycoin value has varied in the range 0.2-2 Satoshi and the donation valuation varies accordingly. The markets for SMLY have been fairly shallow, easily affected by anyone wanting to buy or sell a large number of SMLY. Needless to say, the non-profit will not simply dump their SMLY since that will dramatically affect the market price and thus affect future EIAS prospects.\n\nThe methodology of hard-wired donations implies that anyone wanting to support Education in a Suitcase has one more option: Purchasing SMLY on any market will both be an investment and help EIAS to sell their SMLY. Interestingly, purchasing 25 M SMLY and storing them under a single address will also give dividends. Thus it is possible to make an investment, fund a non-profit and obtain dividend, all in one swoop.",
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      "body": "<h1>Donations, education, non-profits and cryptocurrencies</h1>\n<p><strong>Cryptocurrencies</strong> are popular for donations for many reasons, ranging from anonymity (sort of) through ease of use. This has been stepped up a notch by hard-wiring donations into one cryptocurrency, described here.</p>\n<p><a href=\"http://educationinasuitcase.com/donation/en/index.html\"><strong>Education in a suitcase</strong></a> is a non-profit, which raises funds for purchasing tablets and servers. Free educational material is loaded onto the computers and they are then donated to students in low-income regions, particularly Kenya. The main point is not the hardware or software, but the educational opportunities which come with having access to educational material.</p>\n<p><a href=\"http://tutot-web.net/\"><strong>The tutor-web</strong></a> provides free educational material, including math drills and this forms a part of the EIAS platform. In the case of remote regions, the math-drills are set up to work off-line.</p>\n<p><a href=\"https://tutor-web.info/smileycoin\"><strong>The Smileycoin</strong></a> is a cryptocurrency which is used inside the tutor-web to reward students. Preliminary analyses indicate that SMLY rewards do indeed get students to work a bit harder on their studies.</p>\n<h1>Hard-wired donations</h1>\n<p>Changes made to the SMLY in summer of 2017 included changes to the mining fee. Normally, when a miner finds a new block, the entire <strong>coinbase</strong> becomes the miner's reward. For the SMLY, however, the coinbase is split into three parts, 1000 SMLY for the <strong>miner's fee</strong>, 4500 for <strong>dividends</strong> and 4500 for <strong>donations.</strong> The dividends are paid in rotation to SMLY addresses which hold at least 25 million SMLY and this is done to encourage Smileycoin investment. The <strong>donations are paid in rotation to 10 SMLY addresses which are owned by Education in a Suitcase</strong>.</p>\n<p>Since this is now hardwired into the SMLY mining algorithm, EIAS gets 4500 SMLY for every single block which is mined by any miner. The addresses are hard-coded into the wallets and every wallet tests that this donation is enforced.</p>\n<p>If one looks up any block generated after August 2017, the coinbase transaction of the block demonstrates how this works. Consider <a href=\"https://chainz.cryptoid.info/smly/block.dws?268193.htm\">block 268193</a>. Here one sees the 1000+4500+4500 structure in the first transaction.</p>\n<p>The last part here is the donation, to SMLY address <a href=\"https://chainz.cryptoid.info/smly/address.dws?BPVuYwyeJiXExEmEXHfCwPtRXDRqxBxTNW.htm\">BPVuYwyeJiXExEmEXHfCwPtRXDRqxBxTNW </a>and clicking on the link will show how this particular address has received millions of SMLY (23 million when this note was written in November 2017).</p>\n<h1>Utility</h1>\n<p>The utility of the donations will depend on the future development of the SMLY. The Smileycoin value has varied in the range 0.2-2 Satoshi and the donation valuation varies accordingly. The markets for SMLY have been fairly shallow, easily affected by anyone wanting to buy or sell a large number of SMLY. Needless to say, the non-profit will not simply dump their SMLY since that will dramatically affect the market price and thus affect future EIAS prospects.</p>\n<p>The methodology of hard-wired donations implies that anyone wanting to support Education in a Suitcase has one more option: Purchasing SMLY on any market will both be an investment and help EIAS to sell their SMLY. &nbsp;Interestingly, purchasing 25 M SMLY and storing them under a single address will also give dividends. Thus it is possible to make an investment, fund a non-profit and obtain dividend, all in one swoop.</p>\n<p><br></p>\n<p><br></p>",
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      "body": "Nice ! Add me and keep voting, I’ll do the same 😊",
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      "body": "<h1>Donations, education, non-profits and cryptocurrencies</h1>\n<p><strong>Cryptocurrencies</strong> are popular for donations for many reasons, ranging from anonymity (sort of) through ease of use. This has been stepped up a notch by hard-wiring donations into one cryptocurrency, described here.</p>\n<p><a href=\"http://educationinasuitcase.com/donation/en/index.html\"><strong>Education in a suitcase</strong></a> is a non-profit, which raises funds for purchasing tablets and servers. Free educational material is loaded onto the computers and they are then donated to students in low-income regions, particularly Kenya. The main point is not the hardware or software, but the educational opportunities which come with having access to educational material.</p>\n<p><a href=\"http://tutot-web.net/\"><strong>The tutor-web</strong></a> provides free educational material, including math drills and this forms a part of the EIAS platform. In the case of remote regions, the math-drills are set up to work off-line.</p>\n<p><a href=\"https://tutor-web.info/smileycoin\"><strong>The Smileycoin</strong></a> is a cryptocurrency which is used inside the tutor-web to reward students. Preliminary analyses indicate that SMLY rewards do indeed get students to work a bit harder on their studies.</p>\n<h1>Hard-wired donations</h1>\n<p>Changes made to the SMLY in summer of 2017 included changes to the mining fee. Normally, when a miner finds a new block, the entire <strong>coinbase</strong> becomes the miner's reward. For the SMLY, however, the coinbase is split into three parts, 1000 SMLY for the <strong>miner's fee</strong>, 4500 for <strong>dividends</strong> and 4500 for <strong>donations.</strong> The dividends are paid in rotation to SMLY addresses which hold at least 25 million SMLY and this is done to encourage Smileycoin investment. The <strong>donations are paid in rotation to 10 SMLY addresses which are owned by Education in a Suitcase</strong>.</p>\n<p>Since this is now hardwired into the SMLY mining algorithm, EIAS gets 4500 SMLY for every single block which is mined by any miner. The addresses are hard-coded into the wallets and every wallet tests that this donation is enforced.</p>\n<p>If one looks up any block generated after August 2017, the coinbase transaction of the block demonstrates how this works. Consider <a href=\"https://chainz.cryptoid.info/smly/block.dws?268193.htm\">block 268193</a>. Here one sees the 1000+4500+4500 structure in the first transaction.</p>\n<p>The last part here is the donation, to SMLY address <a href=\"https://chainz.cryptoid.info/smly/address.dws?BPVuYwyeJiXExEmEXHfCwPtRXDRqxBxTNW.htm\">BPVuYwyeJiXExEmEXHfCwPtRXDRqxBxTNW </a>and clicking on the link will show how this particular address has received millions of SMLY (23 million when this note was written in November 2017).</p>\n<h1>Utility</h1>\n<p>The utility of the donations will depend on the future development of the SMLY. The Smileycoin value has varied in the range 0.2-2 Satoshi and the donation valuation varies accordingly. The markets for SMLY have been fairly shallow, easily affected by anyone wanting to buy or sell a large number of SMLY. Needless to say, the non-profit will not simply dump their SMLY since that will dramatically affect the market price and thus affect future EIAS prospects.</p>\n<p>The methodology of hard-wired donations implies that anyone wanting to support Education in a Suitcase has one more option: Purchasing SMLY on any market will both be an investment and help EIAS to sell their SMLY. &nbsp;Interestingly, purchasing 25 M SMLY and storing them under a single address will also give dividends. Thus it is possible to make an investment, fund a non-profit and obtain dividend, all in one swoop.</p>\n<p><br></p>\n<p><br></p>",
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      "body": "<html>\n<h1>Donations, education, non-profits and cryptocurrencies</h1>\n<p><strong>Cryptocurrencies</strong> are popular for donations for many reasons, ranging from anonymity (sort of) through ease of use. This has been stepped up a notch by hard-wiring donations into one cryptocurrency, described here.</p>\n<p><a href=\"http://educationinasuitcase.com/donation/en/index.html\"><strong>Education in a suitcase</strong></a> is a non-profit, which raises funds for purchasing tablets and servers. Free educational material is loaded onto the computers and they are then donated to students in low-income regions, particularly Kenya. The main point is not the hardware or software, but the educational opportunities which come with having access to educational material.</p>\n<p><a href=\"http://tutot-web.net\"><strong>The tutor-web</strong></a> provides free educational material, including math drills and this forms a part of the EIAS platform. In the case of remote regions, the math-drills are set up to work off-line.</p>\n<p><a href=\"https://tutor-web.info/smileycoin\"><strong>The Smileycoin</strong></a> is a cryptocurrency which is used inside the tutor-web to reward students. Preliminary analyses indicate that SMLY rewards do indeed get students to work a bit harder on their studies.</p>\n<h1>Hard-wired donations</h1>\n<p>Changes made to the SMLY in summer of 2017 included changes to the mining fee. Normally, when a miner finds a new block, the entire <strong>coinbase</strong> becomes the miner's reward. For the SMLY, however, the coinbase is split into three parts, 1000 SMLY for the <strong>miner's fee</strong>, 4500 for <strong>dividends</strong> and 4500 for <strong>donations.</strong> The dividends are paid in rotation to SMLY addresses which hold at least 25 million SMLY and this is done to encourage Smileycoin investment. The <strong>donations are paid in rotation to 10 SMLY addresses which are owned by Education in a Suitcase</strong>.</p>\n<p>Since this is now hardwired into the SMLY mining algorithm, EIAS gets 4500 SMLY for every single block which is mined by any miner. The addresses are hard-coded into the wallets and every wallet tests that this donation is enforced.</p>\n<p>If one looks up any block generated after August 2017, the coinbase transaction of the block demonstrates how this works. Consider <a href=\"https://chainz.cryptoid.info/smly/block.dws?268193.htm\">block 268193</a>. Here one sees the 1000+4500+4500 structure in the first transaction.</p>\n<p>The last part here is the donation, to SMLY address <a href=\"https://chainz.cryptoid.info/smly/address.dws?BPVuYwyeJiXExEmEXHfCwPtRXDRqxBxTNW.htm\">BPVuYwyeJiXExEmEXHfCwPtRXDRqxBxTNW </a>and clicking on the link will show how this particular address has received millions of SMLY (23 million when this note was written in November 2017).</p>\n<h1>Utility</h1>\n<p>The utility of the donations will depend on the future development of the SMLY. The Smileycoin value has varied in the range 0.2-2 Satoshi and the donation valuation varies accordingly. The markets for SMLY have been fairly shallow, easily affected by anyone wanting to buy or sell a large number of SMLY. Needless to say, the non-profit will not simply dump their SMLY since that will dramatically affect the market price and thus affect future EIAS prospects.</p>\n<p>The methodology of hard-wired donations implies that anyone wanting to support Education in a Suitcase has one more option: Purchasing SMLY on any market will both be an investment and help EIAS to sell their SMLY. &nbsp;Interestingly, purchasing 25 M SMLY and storing them under a single address will also give dividends. Thus it is possible to make an investment, fund a non-profit and obtain dividend, all in one swoop.</p>\n<p><br></p>\n<p><br></p>\n</html>",
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      "body": "<html>\n<h1>Donations, education, non-profits and cryptocurrencies</h1>\n<p><strong>Cryptocurrencies</strong> are popular for donations for many reasons, ranging from anonymity (sort of) through ease of use. This has been stepped up a notch by hard-wiring donations into one cryptocurrency, described here.</p>\n<p><br>\n![Logo.png](https://steemitimages.com/DQmQgNLFLUPh7qaCH4JTjLjxQc9bQdbu3MBS5qxHguKAvqt/Logo.png)</p>\n<p><a href=\"http://educationinasuitcase.com/donation/en/index.html\"><strong>Education in a suitcase</strong></a> is a non-profit, which raises funds for purchasing tablets and servers. Free educational material is loaded onto the computers and they are then donated to students in low-income regions, particularly Kenya. The main point is not the hardware or software, but the educational opportunities which come with having access to educational material.</p>\n<p><a href=\"http://tutot-web.net\"><strong>The tutor-web</strong></a> provides free educational material, including math drills and this forms a part of the EIAS platform. In the case of remote regions, the math-drills are set up to work off-line.</p>\n<p><a href=\"https://tutor-web.info/smileycoin\"><strong>The Smileycoin</strong></a> is a cryptocurrency which is used inside the tutor-web to reward students. Preliminary analyses indicate that SMLY rewards do indeed get students to work a bit harder on their studies.</p>\n<h1>Hard-wired donations</h1>\n<p>Changes made to the SMLY in summer of 2017 included changes to the mining fee. Normally, when a miner finds a new block, the entire <strong>coinbase</strong> becomes the miner's reward. For the SMLY, however, the coinbase is split into three parts, 1000 SMLY for the <strong>miner's fee</strong>, 4500 for <strong>dividends</strong> and 4500 for <strong>donations.</strong> The dividends are paid in rotation to SMLY addresses which hold at least 25 million SMLY and this is done to encourage Smileycoin investment. The <strong>donations are paid in rotation to 10 SMLY addresses which are owned by Education in a Suitcase</strong>.</p>\n<p>Since this is now hardwired into the SMLY mining algorithm, EIAS gets 4500 SMLY for every single block which is mined by any miner. The addresses are hard-coded into the wallets and every wallet tests that this donation is enforced.</p>\n<p>If one looks up any block generated after August 2017, the coinbase transaction of the block demonstrates how this works. Consider <a href=\"https://chainz.cryptoid.info/smly/block.dws?268193.htm\">block 268193</a>. Here one sees the 1000+4500+4500 structure in the first transaction:</p>\n<p>![](https://steemitimages.com/DQmVe8Bc4AfgEuAy6cNqLB7hQsZ6nN9LcR5o1ovbY8bEcvF/image.png)<br>\n</p>\n<p>The last part here is the donation, to SMLY address <a href=\"https://chainz.cryptoid.info/smly/address.dws?BPVuYwyeJiXExEmEXHfCwPtRXDRqxBxTNW.htm\">BPVuYwyeJiXExEmEXHfCwPtRXDRqxBxTNW </a>and clicking on the link will show how this particular address has received millions of SMLY (23 million when this note was written in November 2017).</p>\n<h1>Utility</h1>\n<p>The utility of the donations will depend on the future development of the SMLY. The Smileycoin value has varied in the range 0.2-2 Satoshi and the donation valuation varies accordingly. The markets for SMLY have been fairly shallow, easily affected by anyone wanting to buy or sell a large number of SMLY. Needless to say, the non-profit will not simply dump their SMLY since that will dramatically affect the market price and thus affect future EIAS prospects.</p>\n<p>The methodology of hard-wired donations implies that anyone wanting to support Education in a Suitcase has one more option: Purchasing SMLY on any market will both be an investment and help EIAS to sell their SMLY. &nbsp;Interestingly, purchasing 25 M SMLY and storing them under a single address will also give dividends. Thus it is possible to make an investment, fund a non-profit and obtain dividend, all in one swoop.</p>\n<p><br></p>\n<p><br></p>\n</html>",
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      "author": "gstefans",
      "body": "@@ -927,16 +927,126 @@\n  free.%0A%0A\n+!%5Btw-twitter.png%5D(https://steemitimages.com/DQmcLD1hE6Rx8NWHaD6sumny9PP6dFRbsxMmdwpCJpcCo2f/tw-twitter.png)%0A%0A%0A\n If you w\n@@ -1824,16 +1824,127 @@\n dying.%0A%0A\n+!%5Bsmileycoin3.png%5D(https://steemitimages.com/DQmc1U6xDeJ4WiRxeLhTH9m92ThWFnjr4Aiu5FiJhe45GHB/smileycoin3.png)%0A%0A\n # What i\n",
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      "body": "@@ -1364,16 +1364,366 @@\n  free.%0A%0A\n+The SMLY or Smileycoin is a token of sorts, intended as a traditional smiley, to reward students. What is more, this is implemented as a cryptocurrency, so it also has uses outside the tutor-web system. If you would like your students to learn about the new electronic currencies, this place is where they can get some %22for free%22, i.e. by studying.%0A%0A\n # What i\n",
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      "author": "gstefans",
      "body": "# Background\nThe freely accessible tutor-web educational system can accommodate many more students than are currently registered. This is a request for fellow instructors to try this out with their students.\n# We are looking for partners\nIf you are a STEM teacher, please consider whether your class can benefit from doing exercises provided in the tutor-web system. These exercises should cover all of high school math and quite a bit outside that as well.\n\nInstructors commonly assign tutor-web drills to students under the format \"We are about to start differentiation. To prepare for this, take some of the drills on algebra and make sure you know these basics before we continue.\" Other teachers use these drills as the only homework. That may not be quite enough for your class but it will certainly reduce your grading load.\n\nIf you want to participate, you and your students are free to self-register. It is completely free.\n\nIf you want to get the most out of it, contact us and we will assist you with setting up your class. Note that registered students get differential treatment. For example, since we know they are real students and not bots or abusers, they receive more SMLY as rewards for their performance. Further, if you have instructor access, then you will get easy access to summaries of your students' grades and so forth. Yes, it is still free.\n\n# What is in it for us?\nWe gain more partners and yes, we do look at the data collected. In particular we investigate whether parameter settings in the system (such as SMLY payments) affect student behavior. If you are interested in research collaboration, do let us know.\n\nThis is a research project: It is funded by grant agencies and no individual makes money off the project. It is completely non-profit. The only way to make money here is to buy SMLY and hope they increase in value :-)\n\nMore seriously, the tutor-web project has produced a fair number of research papers already including [a complete PhD thesis](https://skemman.is/bitstream/1946/20776/1/ahj_phd_prenta.pdf). \n\n# More info\nMore information is available on the [tutor-web intro pages for teachers](https://tutor-web.info/information/teachers) and \n[students](https://tutor-web.info/information/students).",
      "json_metadata": "{\"tags\":[\"education\"],\"links\":[\"https://skemman.is/bitstream/1946/20776/1/ahj_phd_prenta.pdf\",\"https://tutor-web.info/information/teachers\",\"https://tutor-web.info/information/students\"],\"app\":\"steemit/0.1\",\"format\":\"markdown\"}",
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      "permlink": "looking-for-teacher-partners-in-stem",
      "title": "Looking for teacher partners in STEM"
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      "author": "gstefans",
      "body": "@@ -232,16 +232,18 @@\n .html). \n+%0A%0A\n If you d\n",
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