matthieu · February 7, 2025 01:08 · elvis-hp · Jan 18, 2021 · samansarina · Jun 22, 2021
diff --git a/gistfile1.sh b/gistfile1.sh
 # In this example we're sending some test bitcoins from an address we control to a brand new test
 # address. We'll be sending the coins using the following address, public and private keys (please
 # don't abuse).
 #  address : mtWg6ccLiZWw2Et7E5UqmHsYgrAi5wqiov
 #  public  : 03bb318b00de944086fad67ab78a832eb1bf26916053ecd3b14a3f48f9fbe0821f
 #  private : 1af97b1f428ac89b7d35323ea7a68aba8cad178a04eddbbf591f65671bae48a2

 # 1. generate a one-shot dummy address we're going to send money to
 $ curl -X POST http://api.blockcypher.com/v1/btc/test3/addrs
 {
  "private": "19fe93f06878926cc3a75d092621397e958ee82c362cdf61f4eb2d6a12917577",
  "public": "03c3c99511cd377c8f24c23a1cfbc1145fbdbddc93de0d70792dfa13ef08e7dd4f",
  "address": "mzqUStzz6VqByVVMndXNFkpnmc9y8XeJ7o"
 }

 # 2. build the transaction and save the full output to send.json
 $ curl -d '{"inputs": [{"addresses": ["mtWg6ccLiZWw2Et7E5UqmHsYgrAi5wqiov"]}], "outputs": [{"addresses": ["mzqUStzz6VqByVVMndXNFkpnmc9y8XeJ7o"], "value": 25000}]}' http://api.blockcypher.com/v1/btc/test3/txs/new > send.json

 # 3. we generate a signature using the above private key and the data provided in the "tosign"
 # property of send.json. To do so we use the utility at https://github.com/blockcypher/btcutils/tree/master/signer
 # (go build to get binary)
 $ ./signer e6e59c20e6b7b720ac5e61e82e7eea66ce8b8aadc8beb422b2701869cfae42c2 1af97b1f428ac89b7d35323ea7a68aba8cad178a04eddbbf591f65671bae48a2
 3044022025812b93f58b3473124ae726c405cac51f39bb89c110e90f77b2f31a2e1fac67022015b8f1c3fa2ce6d0af44f682ed7e1d7933e51d06099c3eaae8725089b7a8a80e

 # 4. we edit send.json and append the above public key and the newly created signature at the end
 # of the file to end up with the following at the bottom of the file (the rest above it is unchanged):
 $ tail -n 10 send.json 
  "tosign": [
    "e6e59c20e6b7b720ac5e61e82e7eea66ce8b8aadc8beb422b2701869cfae42c2"
  ],
  "signatures": [
    "3044022025812b93f58b3473124ae726c405cac51f39bb89c110e90f77b2f31a2e1fac67022015b8f1c3fa2ce6d0af44f682ed7e1d7933e51d06099c3eaae8725089b7a8a80e"
  ],
  "pubkeys": [
    "03bb318b00de944086fad67ab78a832eb1bf26916053ecd3b14a3f48f9fbe0821f"
  ]
 }

 # 5. finally, sending the resulting transaction with the signature and the public key
 $ curl -d @send.json http://api.blockcypher.com/v1/btc/test3/txs/send

 # This will output the final transaction, including its hash.
	# In this example we're sending some test bitcoins from an address we control to a brand new test
	# address. We'll be sending the coins using the following address, public and private keys (please
	# don't abuse).
	# address : mtWg6ccLiZWw2Et7E5UqmHsYgrAi5wqiov
	# public : 03bb318b00de944086fad67ab78a832eb1bf26916053ecd3b14a3f48f9fbe0821f
	# private : 1af97b1f428ac89b7d35323ea7a68aba8cad178a04eddbbf591f65671bae48a2

	# 1. generate a one-shot dummy address we're going to send money to
	$ curl -X POST http://api.blockcypher.com/v1/btc/test3/addrs
	{
	"private": "19fe93f06878926cc3a75d092621397e958ee82c362cdf61f4eb2d6a12917577",
	"public": "03c3c99511cd377c8f24c23a1cfbc1145fbdbddc93de0d70792dfa13ef08e7dd4f",
	"address": "mzqUStzz6VqByVVMndXNFkpnmc9y8XeJ7o"
	}

	# 2. build the transaction and save the full output to send.json
	$ curl -d '{"inputs": [{"addresses": ["mtWg6ccLiZWw2Et7E5UqmHsYgrAi5wqiov"]}], "outputs": [{"addresses": ["mzqUStzz6VqByVVMndXNFkpnmc9y8XeJ7o"], "value": 25000}]}' http://api.blockcypher.com/v1/btc/test3/txs/new > send.json

	# 3. we generate a signature using the above private key and the data provided in the "tosign"
	# property of send.json. To do so we use the utility at https://github.com/blockcypher/btcutils/tree/master/signer
	# (go build to get binary)
	$ ./signer e6e59c20e6b7b720ac5e61e82e7eea66ce8b8aadc8beb422b2701869cfae42c2 1af97b1f428ac89b7d35323ea7a68aba8cad178a04eddbbf591f65671bae48a2
	3044022025812b93f58b3473124ae726c405cac51f39bb89c110e90f77b2f31a2e1fac67022015b8f1c3fa2ce6d0af44f682ed7e1d7933e51d06099c3eaae8725089b7a8a80e

	# 4. we edit send.json and append the above public key and the newly created signature at the end
	# of the file to end up with the following at the bottom of the file (the rest above it is unchanged):
	$ tail -n 10 send.json
	"tosign": [
	"e6e59c20e6b7b720ac5e61e82e7eea66ce8b8aadc8beb422b2701869cfae42c2"
	],
	"signatures": [
	"3044022025812b93f58b3473124ae726c405cac51f39bb89c110e90f77b2f31a2e1fac67022015b8f1c3fa2ce6d0af44f682ed7e1d7933e51d06099c3eaae8725089b7a8a80e"
	],
	"pubkeys": [
	"03bb318b00de944086fad67ab78a832eb1bf26916053ecd3b14a3f48f9fbe0821f"
	]
	}

	# 5. finally, sending the resulting transaction with the signature and the public key
	$ curl -d @send.json http://api.blockcypher.com/v1/btc/test3/txs/send

	# This will output the final transaction, including its hash.