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Publicly visible data attached to a transaction and stored on the blockchain. This can be anything from a simple message to complex JSON objects.

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How to permanently persist an arbitrary hash string in the blockchain?

Does Cardano allow for appending metadata like an arbitrary hash string to a transaction? … )+0 \ --metadata-json-file metadata.json \ --fee 0 \ --out-file tx.draft https://developers.cardano.org/docs/transaction-metadata/how-to-create-a-metadata-transaction-cli#submit-to-blockchain …
Danny Tuppeny - CODER's user avatar