March 18, 2026

Get transaction that spent a transaction id

The blockchain.info API allows for querying information about a particular Transaction by its ID. But if you want to follow the coins to the next transaction, I’m not seeing what the next query should be. […]

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Test Network Genesis Block

I am using BitcoinJ for my java application which fetches the test network’s genesis block. I referred to the basics mentioned at JavaWorld and BitcoinJ’s Google Code wiki. I am able to get it running […]

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How do I optimize my usage of oclvanitygen?

I’d like to extract the most performance possible from oclvanitygen. Can anyone tell me what the best practices are with this tool? Examples may include: Use operating system X, or video card Y Ensure that […]

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Is Bitcoin future-proof?

As I understand things, the security and integrity of Bitcoin rely on the assumption that its hashing is “hard” in some sense. However, in the past, processing power has increased exponentially. This has made some […]

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