Duo Arcos
type: MusicGroup
popularity: 6
followers: 34
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb80c3cac9d60da27995082f8c2777047bbce7f6bd79e965f7c2c0cc5a19b21f3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953947
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953947
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/21b6eda8-6b2f-4363-8017-a05bebb2a13c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/21b6eda8-6b2f-4363-8017-a05bebb2a13c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/21b6eda8-6b2f-4363-8017-a05bebb2a13c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T13:14:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb80c3cac9d60da27995082f8c2777047bbce7f6bd79e965f7c2c0cc5a19b21f3","name":"Duo Arcos","registered_at":"2026-06-16T01:23:09Z","symbol":"NIM0893222","token_address":"0xe25a41a8398de3f0acad7c638b748c87fa25442e","type":"artist","uuid":"21b6eda8-6b2f-4363-8017-a05bebb2a13c"}
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 0xb80c3cac9d60da27995082f8c2777047bbce7f6bd79e965f7c2c0cc5a19b21f3. Chain 2 (Bitcoin): anchored in block 953947 (2026-06-16T13:14:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/21b6eda8-6b2f-4363-8017-a05bebb2a13c.json and https://artists.proofprofile.net/proofs/artist/21b6eda8-6b2f-4363-8017-a05bebb2a13c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:14:26Z
  text: {"copyright_id":"0xb80c3cac9d60da27995082f8c2777047bbce7f6bd79e965f7c2c0cc5a19b21f3","name":"Duo Arcos","registered_at":"2026-06-16T01:23:09Z","symbol":"NIM0893222","token_address":"0xe25a41a8398de3f0acad7c638b748c87fa25442e","type":"artist","uuid":"21b6eda8-6b2f-4363-8017-a05bebb2a13c"}
album: Autre Temps
  type: MusicAlbum
  date published: 2024-05-24
album: Solos & Encores
  type: MusicAlbum
  date published: 2025-06-27