Refré Couplain
type: MusicGroup
popularity: 4
followers: 684
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8ad8403c2261b70485e9f8f5c75d3a748bcd8df6673c123aea5f5289434728f8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953972
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953972
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2b0b5a80-8a8b-4fb2-8aae-620b6ab4cf3b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2b0b5a80-8a8b-4fb2-8aae-620b6ab4cf3b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2b0b5a80-8a8b-4fb2-8aae-620b6ab4cf3b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T16:31:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8ad8403c2261b70485e9f8f5c75d3a748bcd8df6673c123aea5f5289434728f8","name":"Refré Couplain","registered_at":"2026-06-16T04:30:21Z","symbol":"NIM0937935","token_address":"0x06300896a583a1fd7ec4d12f26d82c1090954f54","type":"artist","uuid":"2b0b5a80-8a8b-4fb2-8aae-620b6ab4cf3b"}
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 0x8ad8403c2261b70485e9f8f5c75d3a748bcd8df6673c123aea5f5289434728f8. Chain 2 (Bitcoin): anchored in block 953972 (2026-06-16T16:31:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b0b5a80-8a8b-4fb2-8aae-620b6ab4cf3b.json and https://artists.proofprofile.net/proofs/artist/2b0b5a80-8a8b-4fb2-8aae-620b6ab4cf3b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T16:31:10Z
  text: {"copyright_id":"0x8ad8403c2261b70485e9f8f5c75d3a748bcd8df6673c123aea5f5289434728f8","name":"Refré Couplain","registered_at":"2026-06-16T04:30:21Z","symbol":"NIM0937935","token_address":"0x06300896a583a1fd7ec4d12f26d82c1090954f54","type":"artist","uuid":"2b0b5a80-8a8b-4fb2-8aae-620b6ab4cf3b"}
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