Created
March 7, 2015 22:43
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Sending op_return transactions with BlockCypher
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| <script> | |
| var bytesToHex = Bitcoin.convert.bytesToHex; | |
| var hexToBytes = Bitcoin.convert.hexToBytes; | |
| var mula = { | |
| private : "1af97b1f428ac89b7d35323ea7a68aba8cad178a04eddbbf591f65671bae48a2", | |
| public : "03bb318b00de944086fad67ab78a832eb1bf26916053ecd3b14a3f48f9fbe0821f", | |
| address : "mtWg6ccLiZWw2Et7E5UqmHsYgrAi5wqiov" | |
| } | |
| function hexToString(hexstr) { return Bitcoin.convert.bytesToString(Bitcoin.convert.hexToBytes(hexstr)); }; | |
| function sign(data, address) { | |
| var key = Bitcoin.ECKey.fromHex(address.private); | |
| data.pubkeys = []; | |
| data.signatures = data.tosign.map(function(tosign) { | |
| data.pubkeys.push(address.public); | |
| return bytesToHex(key.sign(hexToBytes(tosign))); | |
| }); | |
| return data; | |
| } | |
| function sendNullData(str) { | |
| var newtx = { | |
| "inputs": [{"addresses": [mula.address]}], | |
| "outputs": [{addresses: [str], value: 1, script_type: "null-data"}] | |
| }; | |
| $.post("http://api.blockcypher.com/v1/btc/test3/txs/new", JSON.stringify(newtx), function(tx) { | |
| var signedtx = sign(tx, mula); | |
| $.post("http://api.blockcypher.com/v1/btc/test3/txs/send", JSON.stringify(signedtx), function(senttx) { | |
| console.log("Sent", senttx.tx.hash); | |
| }); | |
| }); | |
| } | |
| $(function() { | |
| $(".send").click(function() { sendNullData($(".box").val()); $(".box").val(''); }) | |
| var ws = new WebSocket("ws://socket.blockcypher.com/v1/btc/test3"); | |
| setInterval(function() {ws.send(JSON.stringify({event: 'ping'}))}, 5000) | |
| ws.onmessage = function(evt) { | |
| var tx = JSON.parse(evt.data); | |
| if (tx.hash) { | |
| $('.log').prepend("<div>"+tx.received.substring(11, 19)+" | "+tx.hash.substring(0, 8)+ | |
| "... > " + hexToString(tx.outputs[0].script.substring(2)) + "</div>"); | |
| } | |
| } | |
| ws.onopen = function(event) { | |
| ws.send(JSON.stringify({event: "unconfirmed-tx", script: "null-data"})); | |
| } | |
| }); | |
| </script> | |
| </body> | |
| </html> |
Bump
I keep getting this error when attaching a 32 byte hash to a OP_RETURN:
Error creating transaction skeleton: {
errors: [ { error: 'Error no data to embed for OP_RETURN output 1.' } ],
my txskeleton:
Creating transaction skeleton with requestBody: {
"inputs": [
{
"addresses": [
"bc1qu05e8nvpy5f9pyyxs9c76drvksfqsy6gztf70u"
]
}
],
"outputs": [
{
"addresses": [
"bc1quul9kxpd63mghcgj6h5gc7g5c2zqmnmzex94ml"
],
"value": 700
},
{
"script_type": "null-data",
"data": "84e4111fc915e6465cc024512b590a93e7fd99bdc4b50f15e45b7cae3c7588ea",
"value": 0
}
],
"token": "8a2fe74g171c45379ad7bc3b655510ef"
}
any ideas?
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Here's the payload:
{"inputs":[{"addresses":["mnXp7HZ7aH4PjT21Q2BvWzeCdigXo1CQGX"]}], "outputs":[{"addresses":["Mystring"],"value":1,"script_type":"null-data"}]}: