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How to store data in the Bitcoin blockchain

Ciro Santilli (@cirosantilli, 37) ... Social technology Money Blockchain Cryptocurrency List of cryptocurrencies Bitcoin
Updated 2025-07-16  0 By others on same topic  0 Discussions Create my own version
There are apparently two methods:
  • in the script, e.g. as in the Genesis block message
  • in output addresses
Specific implementations:
  • eternitywall.it/ Eternity Wall
    Launched 2015 www.newsbtc.com/news/bitcoin/eternity-wall-records-1150-documents-blockchain-first-year/
    TODO find sample transactions. Did it support images?
    Shutdown sometime after 2019, working archive: web.archive.org/web/20190417074034/https://eternitywall.it/ says "Sorry, the service is not properly working at the moment..." and last working message timestamped "April 16, 2019 8:02 PM GMT".
Bibliography:
  • bitcoin.stackexchange.com/questions/32575/what-methods-are-currently-used-to-embed-additional-data-into-the-bitcoin-blockc
  • bitcoin.stackexchange.com/questions/39347/how-to-store-data-on-the-blockchain

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