Couleur d'opium
type: MusicGroup
popularity: 14
followers: 211
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb948f0a7d0525eec1805d555a18c4c55c5e1279c9abfffda4b4bd16dd32f5aec
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953633
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953633
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/33426409-f455-4b1e-8313-d9b405e90c2c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/33426409-f455-4b1e-8313-d9b405e90c2c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/33426409-f455-4b1e-8313-d9b405e90c2c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T12:47:11Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb948f0a7d0525eec1805d555a18c4c55c5e1279c9abfffda4b4bd16dd32f5aec","name":"Couleur d'opium","registered_at":"2026-06-14T09:51:32Z","symbol":"NIM0415570","token_address":"0x5a0ae77d08ebf0f9b534593127ef5ce7517011cb","type":"artist","uuid":"33426409-f455-4b1e-8313-d9b405e90c2c"}
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 0xb948f0a7d0525eec1805d555a18c4c55c5e1279c9abfffda4b4bd16dd32f5aec. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33426409-f455-4b1e-8313-d9b405e90c2c.json and https://artists.proofprofile.net/proofs/artist/33426409-f455-4b1e-8313-d9b405e90c2c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T12:47:11Z
  text: {"copyright_id":"0xb948f0a7d0525eec1805d555a18c4c55c5e1279c9abfffda4b4bd16dd32f5aec","name":"Couleur d'opium","registered_at":"2026-06-14T09:51:32Z","symbol":"NIM0415570","token_address":"0x5a0ae77d08ebf0f9b534593127ef5ce7517011cb","type":"artist","uuid":"33426409-f455-4b1e-8313-d9b405e90c2c"}
album: S When You Say
  type: MusicAlbum
  date published: 2020-10-27
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  type: MusicAlbum
  date published: 2021-05-20
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  type: MusicAlbum
  date published: 2022-01-19
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  type: MusicAlbum
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  type: MusicAlbum
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  type: MusicAlbum
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  type: MusicAlbum
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  type: MusicAlbum
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