Calú
type: MusicGroup
popularity: 7
followers: 356
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0cb056a9b511bd887e793af59729d811e82841f526af48080962c574f9dbd348
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954555
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954555
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/af1582ca-8318-4bfc-a768-b6d802b877ec.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/af1582ca-8318-4bfc-a768-b6d802b877ec.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/af1582ca-8318-4bfc-a768-b6d802b877ec
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T12:10:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0cb056a9b511bd887e793af59729d811e82841f526af48080962c574f9dbd348","name":"Calú","registered_at":"2026-06-20T11:15:04Z","symbol":"NIM1599692","token_address":"0x99076dfd81d4e266eaf0bb0b2ed30ad61e1335c2","type":"artist","uuid":"af1582ca-8318-4bfc-a768-b6d802b877ec"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb056a9b511bd887e793af59729d811e82841f526af48080962c574f9dbd348. 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/af1582ca-8318-4bfc-a768-b6d802b877ec.json and https://artists.proofprofile.net/proofs/artist/af1582ca-8318-4bfc-a768-b6d802b877ec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T12:10:20Z
  text: {"copyright_id":"0x0cb056a9b511bd887e793af59729d811e82841f526af48080962c574f9dbd348","name":"Calú","registered_at":"2026-06-20T11:15:04Z","symbol":"NIM1599692","token_address":"0x99076dfd81d4e266eaf0bb0b2ed30ad61e1335c2","type":"artist","uuid":"af1582ca-8318-4bfc-a768-b6d802b877ec"}
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