Jakob La Cour
type: MusicGroup
popularity: 2
followers: 1
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x18fadbb0d13ed69b5c421a3bc8c89981c127ad50d97ece91bba682711f6a37af
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954623
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954623
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cba372e4-a306-44c2-898c-5da1ad843904.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cba372e4-a306-44c2-898c-5da1ad843904.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cba372e4-a306-44c2-898c-5da1ad843904
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:40:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x18fadbb0d13ed69b5c421a3bc8c89981c127ad50d97ece91bba682711f6a37af","name":"Jakob La Cour","registered_at":"2026-06-20T22:58:32Z","symbol":"NIM1740806","token_address":"0xf28f99d721f0dba9f8cbf25452110ded73c052c9","type":"artist","uuid":"cba372e4-a306-44c2-898c-5da1ad843904"}
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 0x18fadbb0d13ed69b5c421a3bc8c89981c127ad50d97ece91bba682711f6a37af. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cba372e4-a306-44c2-898c-5da1ad843904.json and https://artists.proofprofile.net/proofs/artist/cba372e4-a306-44c2-898c-5da1ad843904.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T23:40:06Z
  text: {"copyright_id":"0x18fadbb0d13ed69b5c421a3bc8c89981c127ad50d97ece91bba682711f6a37af","name":"Jakob La Cour","registered_at":"2026-06-20T22:58:32Z","symbol":"NIM1740806","token_address":"0xf28f99d721f0dba9f8cbf25452110ded73c052c9","type":"artist","uuid":"cba372e4-a306-44c2-898c-5da1ad843904"}
album: Hymnus for 12 Cellos, Op. 57
  type: MusicAlbum
  date published: 2022-05-27