Clas Yngstrom
type: MusicGroup
genre: blues rock
popularity: 4
followers: 280
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xac6c224ac962524617e43417c7f0730bd2ebc029ad24c82dde384415ddd3ae06
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a8597f7e-9df9-415e-ace3-ca4a5d70b45d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a8597f7e-9df9-415e-ace3-ca4a5d70b45d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a8597f7e-9df9-415e-ace3-ca4a5d70b45d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xac6c224ac962524617e43417c7f0730bd2ebc029ad24c82dde384415ddd3ae06","name":"Clas Yngstrom","registered_at":"2026-06-20T08:32:47Z","symbol":"NIM1567372","token_address":"0x6fcb6c61e939937c4bc5ca09d8f31eea73ab40d6","type":"artist","uuid":"a8597f7e-9df9-415e-ace3-ca4a5d70b45d"}
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 0xac6c224ac962524617e43417c7f0730bd2ebc029ad24c82dde384415ddd3ae06. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a8597f7e-9df9-415e-ace3-ca4a5d70b45d.json and https://artists.proofprofile.net/proofs/artist/a8597f7e-9df9-415e-ace3-ca4a5d70b45d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T12:10:20Z
  text: {"copyright_id":"0xac6c224ac962524617e43417c7f0730bd2ebc029ad24c82dde384415ddd3ae06","name":"Clas Yngstrom","registered_at":"2026-06-20T08:32:47Z","symbol":"NIM1567372","token_address":"0x6fcb6c61e939937c4bc5ca09d8f31eea73ab40d6","type":"artist","uuid":"a8597f7e-9df9-415e-ace3-ca4a5d70b45d"}
album: Fat Guitar
  type: MusicAlbum
  date published: 2000-01-01
album: Svenneblues
  type: MusicAlbum
  date published: 2013-10-16
album: Clas Yngström & Malin Foxdal Live
  type: MusicAlbum
  date published: 2015-03-06