Les Amis
type: MusicGroup
genre: polka
popularity: 5
followers: 1
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6594e9fe0e3e3ced9c5d0442652767120955808f6ac4a6fee1162868d3b52437
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953875
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953875
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/08b373e1-29fa-4e67-8ccb-b0445d3aa43c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/08b373e1-29fa-4e67-8ccb-b0445d3aa43c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/08b373e1-29fa-4e67-8ccb-b0445d3aa43c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T02:12:46Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6594e9fe0e3e3ced9c5d0442652767120955808f6ac4a6fee1162868d3b52437","name":"Les Amis","registered_at":"2026-06-15T16:32:51Z","symbol":"NIM0766696","token_address":"0x5f6a57a279a5d846e1362a410d70c787ecf12a81","type":"artist","uuid":"08b373e1-29fa-4e67-8ccb-b0445d3aa43c"}
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 0x6594e9fe0e3e3ced9c5d0442652767120955808f6ac4a6fee1162868d3b52437. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/08b373e1-29fa-4e67-8ccb-b0445d3aa43c.json and https://artists.proofprofile.net/proofs/artist/08b373e1-29fa-4e67-8ccb-b0445d3aa43c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T02:39:16Z
  text: {"copyright_id":"0x6594e9fe0e3e3ced9c5d0442652767120955808f6ac4a6fee1162868d3b52437","name":"Les Amis","registered_at":"2026-06-15T16:32:51Z","symbol":"NIM0766696","token_address":"0x5f6a57a279a5d846e1362a410d70c787ecf12a81","type":"artist","uuid":"08b373e1-29fa-4e67-8ccb-b0445d3aa43c"}
album: Vaarwel
  type: MusicAlbum
  date published: 1984-03-03
  track: Vaarwel
    type: MusicRecording
    duration: PT3M51S
    duration ms: 231228
    explicit: false
    by artist: Les Amis
    in album: Vaarwel
      type: MusicAlbum
      date published: 1984-03-03
    genre: polka
    isrc code: NLW2R2150962
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T11:27:47+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x29018f169ccfcbad5195ea35231af0b60812b2a34a7ba811d5fd39df3107bd0e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958157
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958157
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLW2R2150962
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T14:29:39Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29018f169ccfcbad5195ea35231af0b60812b2a34a7ba811d5fd39df3107bd0e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:29:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLW2R2150962.
      date published: 2026-07-15T14:29:39Z
    audio: Vaarwel
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 137.17
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.595
      additional property: Energy
        type: PropertyValue
        value: 0.809
      additional property: Speechiness
        type: PropertyValue
        value: 0.039
      additional property: Acousticness
        type: PropertyValue
        value: 0.159
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.287
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.846
      additional property: Loudness (dB)
        type: PropertyValue
        value: -13.201
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major