So I have an offline wallet created with Electrum. When signing transactions on the cold storage machine, I would like to be able to check that the address I’m sending the change to is actually […]

My target is to make transaction with unspent transaction outputs(UTXOS). The information of UTXOs is as follow. [ { “pt_idx”: 0, “subaccount”: 37, “ga_asset_id”: 1, “value”: “92343”, “block_height”: 1288714, “txhash”: “9e2d2d56632b609e9b5d0a1990cf0ffbd9865cec558b68ed106df352fd89cfb1”, “pointer”: 1083, “script_type”: 14 […]

I was happily using bitcoinrpc until I moved to python3 (python3.6.4 at the moment) and it stops working. Now I’m trying to use this one: https://github.com/XertroV/Bitcoin-python3 After completing install I run the code: import bitcoinrpc […]

I’ve created a genesis block following this instructions: https://bitcointalk.org/index.php?topic=181981.0 Using this data: ./genesis 04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f “The Times 2018/03/16 Detectives de bots: como desenmascarar a las cuentas falsas” 486604799 I’ve got: Coinbase: 04ffff001d0104505468652054696d657320323031382f30332f3136204465746563746976657320646520626f74733a20636f6d6f20646573656e6d617363617261722061206c6173206375656e7461732066616c736173 PubkeyScript: 4104678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5fac Merkle Hash: […]

I’m trying to find money laundering and other ‘bad’ use cases of the Bitcoin. Of course, the public Blockchain is available to me and that is my main data source. But this is also quite […]

As the title suggest, are there any opensource PHP cryptocurrency exchange/marketplace. Most of the ones I found does not seem to work or are abandoned.

I have created an android app for maintaining the portfolio. I have used the coinmarketcap.com API. This API does not have the data at exchange level. I have tried https://min-api.cryptocompare.com/ this does not have the […]

In the process of trying to understand the effects of segwit on Bitcoin I started watching this: https://www.youtube.com/watch?v=NOYNZB5BCHM Which are the cases in which the receiver does not need the signatures? (minute 6.20) Am I […]

I have created a testnet wallet on testnet.blockchain.info and added some testnet bitcoins to it. I want to test the payment APIs so I am following the documentation on how to Generate a receive address. […]