First Calls
type: MusicGroup
genre: jazz fusion
popularity: 2
followers: 23
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x589348cf46e823205218bba79773a135d2c287e9a08669d977d7d24906029976
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954134
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954134
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7f799c96-0d6f-4b0d-abc4-1217cb024e2b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7f799c96-0d6f-4b0d-abc4-1217cb024e2b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7f799c96-0d6f-4b0d-abc4-1217cb024e2b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T19:41:05Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x589348cf46e823205218bba79773a135d2c287e9a08669d977d7d24906029976","name":"First Calls","registered_at":"2026-06-17T10:05:33Z","symbol":"NIM1361516","token_address":"0xe77f5d79955c4c807f45cb9f0f162404294b14b0","type":"artist","uuid":"7f799c96-0d6f-4b0d-abc4-1217cb024e2b"}
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 0x589348cf46e823205218bba79773a135d2c287e9a08669d977d7d24906029976. Chain 2 (Bitcoin): anchored in block 954174 (2026-06-18T03:01:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f799c96-0d6f-4b0d-abc4-1217cb024e2b.json and https://artists.proofprofile.net/proofs/artist/7f799c96-0d6f-4b0d-abc4-1217cb024e2b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-18T03:01:36Z
  text: {"copyright_id":"0x589348cf46e823205218bba79773a135d2c287e9a08669d977d7d24906029976","name":"First Calls","registered_at":"2026-06-17T10:05:33Z","symbol":"NIM1361516","token_address":"0xe77f5d79955c4c807f45cb9f0f162404294b14b0","type":"artist","uuid":"7f799c96-0d6f-4b0d-abc4-1217cb024e2b"}