Jaakko Mäntymaa
type: MusicGroup
popularity: 19
followers: 33
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5831ca26a807c470b8a907e154e1345d03e59aa2b7394cf928080ed6c9043571
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953694
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953694
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6f7efbd2-7fe7-4dda-a28e-47addcd6f047.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6f7efbd2-7fe7-4dda-a28e-47addcd6f047.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6f7efbd2-7fe7-4dda-a28e-47addcd6f047
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T21:38:09Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5831ca26a807c470b8a907e154e1345d03e59aa2b7394cf928080ed6c9043571","name":"Jaakko Mäntymaa","registered_at":"2026-06-14T16:06:49Z","symbol":"NIM0505128","token_address":"0xa990b1d12fcc831ff25b2a31ffb8cd01c56ccb04","type":"artist","uuid":"6f7efbd2-7fe7-4dda-a28e-47addcd6f047"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5831ca26a807c470b8a907e154e1345d03e59aa2b7394cf928080ed6c9043571. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f7efbd2-7fe7-4dda-a28e-47addcd6f047.json and https://artists.proofprofile.net/proofs/artist/6f7efbd2-7fe7-4dda-a28e-47addcd6f047.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T21:38:09Z
  text: {"copyright_id":"0x5831ca26a807c470b8a907e154e1345d03e59aa2b7394cf928080ed6c9043571","name":"Jaakko Mäntymaa","registered_at":"2026-06-14T16:06:49Z","symbol":"NIM0505128","token_address":"0xa990b1d12fcc831ff25b2a31ffb8cd01c56ccb04","type":"artist","uuid":"6f7efbd2-7fe7-4dda-a28e-47addcd6f047"}