El Rek
type: MusicGroup
popularity: 2
followers: 3
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe1c2a529c7cfa58605bcb7be88c8644157b37f47c1965d8bcf0400e6212e32e7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b952b083-a526-4a6c-9b4d-f7efae1225e1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b952b083-a526-4a6c-9b4d-f7efae1225e1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b952b083-a526-4a6c-9b4d-f7efae1225e1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe1c2a529c7cfa58605bcb7be88c8644157b37f47c1965d8bcf0400e6212e32e7","name":"El Rek","registered_at":"2026-06-20T16:38:51Z","symbol":"NIM1655654","token_address":"0x7cd8b81c0377e631b31e8e284fb5c3132d9f1681","type":"artist","uuid":"b952b083-a526-4a6c-9b4d-f7efae1225e1"}
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 0xe1c2a529c7cfa58605bcb7be88c8644157b37f47c1965d8bcf0400e6212e32e7. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b952b083-a526-4a6c-9b4d-f7efae1225e1.json and https://artists.proofprofile.net/proofs/artist/b952b083-a526-4a6c-9b4d-f7efae1225e1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xe1c2a529c7cfa58605bcb7be88c8644157b37f47c1965d8bcf0400e6212e32e7","name":"El Rek","registered_at":"2026-06-20T16:38:51Z","symbol":"NIM1655654","token_address":"0x7cd8b81c0377e631b31e8e284fb5c3132d9f1681","type":"artist","uuid":"b952b083-a526-4a6c-9b4d-f7efae1225e1"}
album: Abstract
  type: MusicAlbum
  date published: 2023-03-08
  track: Abstract
    type: MusicRecording
    duration: PT3M44S
    duration ms: 224000
    explicit: false
    by artist: El Rek
    in album: Abstract
      type: MusicAlbum
      date published: 2023-03-08
    isrc code: QZS652364966
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T16:08:10+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa847552dff4d761ad888795c7ab736a874c321d2f8d7ddda5db696f8f5d8e695
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958761
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958761
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS652364966
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T19:08:58Z
    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 0xa847552dff4d761ad888795c7ab736a874c321d2f8d7ddda5db696f8f5d8e695. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:08:58Z), 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/QZS652364966.
      date published: 2026-07-19T19:08:58Z
    audio: Abstract
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 119.986
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.823
      additional property: Energy
        type: PropertyValue
        value: 0.493
      additional property: Speechiness
        type: PropertyValue
        value: 0.125
      additional property: Acousticness
        type: PropertyValue
        value: 0.094
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.864
      additional property: Liveness
        type: PropertyValue
        value: 0.075
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.487
      additional property: Loudness (dB)
        type: PropertyValue
        value: -19.365
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Major