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Thanks to @Anonymous who pointed out bitcoin-iterate, I think I have found a solution that will work for me. This tool makes it very easy to extract all data you need in a custom format. All the tools that I listed in my original question had some pre-defined structure. I decided on a preliminary data structure that I defined in JSON. I will probably ...


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There are roughly two approaches as you've noticed: process the block .dat files from running bitcoind rpc to a node, pull blocks or headers, and batch process them in parallel For speed, probably doing #1 is best, as BitcoinDataBaseGenerator does. Unfortunately, as you've noted, it stopped being maintained in early 2017 and so does not support Segwit. I ...


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You will not be able to send a transaction with an OP_RETURN larger than 80 bytes unless you mine a block that includes the transaction. An OP_RETURN larger than 80 bytes is considered non-standard, but still valid, meaning nodes will not relay your transaction (on default settings) but will accept the transaction if it is included in a block. An ...


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I work with obviously unspendable addresses. Send any one single line from a thin client, phone. Use a core node to bundle long messages with sendmany. https://live.blockcypher.com/doge/tx/63de9f4da10693813c977e895dafff0ae725ff9011c76d90f483c6243890ebb6/ This message goes on for 83 addresses and includes a real address, which causes the wallet on my ...


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