small (maybe) easy question.

i want to find with blockfrost a "message" on a transaction.

can someone help me a bit for this? i dont find currently anything.

thank you in advanced. TTS17

  • 1
    By "message" on a transaction do you mean finding transaction metadata given a transaction hash? There is this Blockfrost resource or this Koios resource.
    – keefie
    Apr 23, 2022 at 6:49
  • i think we speak for the same. developers.cardano.org/docs/governance/… i think it is the ""Handling ill-formed 674 metadata"" thank i will do some test with real transactions and message. i want to ask people to text something specific and when i find transaction with this message, to do something else
    – TTS17
    Apr 23, 2022 at 14:36
  • perfect, i found one transaction with msg in cardanoscan and execute this command. ----- curl -H 'project_id: mainnetID' cardano-mainnet.blockfrost.io/api/v0/txs/…
    – TTS17
    Apr 23, 2022 at 14:45
  • 1
    Good to know! I have added an answer after your clarification so feel free to mark it as answered. Don't hesitate to comment asking for more details if you need more info too
    – keefie
    Apr 24, 2022 at 2:34

1 Answer 1


Given the message in your context is the CIP 20: Transaction message/comment metadata, you can query this Blockfrost resource or this Koios resource to retrieve the metadata of a transaction given its hash, specifically retrieving the details under the 674 label.

  • thank you mate, is something i have found with combination of your answer and my research. you have verify and then i test it. is so great what all is possible :)
    – TTS17
    Apr 25, 2022 at 2:32
  • Glad to be of help. Don't hesitate to add a comment if you have any further related questions.
    – keefie
    Apr 25, 2022 at 15:11
  • thank you, i will try to use this with BASH and collect a number from there, and then compare it with the APOCH number :)
    – TTS17
    Apr 25, 2022 at 16:17

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