EXRA
type: MusicGroup
popularity: 4
followers: 43
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb6e005ff23fbabb8ba776a33ce5739028bcf6ccd2d38f9d9cc72aac8b9d7f425
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/79d31294-3c69-4b82-bdd8-6ce3d6b089fb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/79d31294-3c69-4b82-bdd8-6ce3d6b089fb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/79d31294-3c69-4b82-bdd8-6ce3d6b089fb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
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 0xb6e005ff23fbabb8ba776a33ce5739028bcf6ccd2d38f9d9cc72aac8b9d7f425. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79d31294-3c69-4b82-bdd8-6ce3d6b089fb.json and https://artists.proofprofile.net/proofs/artist/79d31294-3c69-4b82-bdd8-6ce3d6b089fb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
album: RIVE SUD
  type: MusicAlbum
  date published: 2025-03-23
  track: RIVE SUD
    type: MusicRecording
    duration: PT2M46S
    duration ms: 166741
    explicit: true
    by artist: EXRA
    in album: RIVE SUD
      type: MusicAlbum
      date published: 2025-03-23
    isrc code: QZK6P2511080
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T23:29:28+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xca01d5c74a4f5f13b3540e50d55f6aff80789c85a7ee18052ecfc16901f54ad3
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958489
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958489
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6P2511080
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T04:13:26Z
    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 0xca01d5c74a4f5f13b3540e50d55f6aff80789c85a7ee18052ecfc16901f54ad3. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZK6P2511080.
      date published: 2026-07-18T04:13:26Z
    audio: RIVE SUD
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 179.981
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.659
      additional property: Energy
        type: PropertyValue
        value: 0.558
      additional property: Speechiness
        type: PropertyValue
        value: 0.488
      additional property: Acousticness
        type: PropertyValue
        value: 0.317
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.201
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.515
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.744
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: CASH ZONE
  type: MusicAlbum
  date published: 2025-04-06
  track: CASH ZONE
    type: MusicRecording
    duration: PT1M44S
    duration ms: 104836
    explicit: true
    by artist: EXRA
    in album: CASH ZONE
      type: MusicAlbum
      date published: 2025-04-06
    isrc code: QZK6H2520890
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T02:40:43+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xda9e9b7e12e635cdfcd227865b52b498f8a0d87de1a607622113a49251b496ea
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958955
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958955
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6H2520890
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T03:03:40Z
    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 0xda9e9b7e12e635cdfcd227865b52b498f8a0d87de1a607622113a49251b496ea. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZK6H2520890.
      date published: 2026-07-21T03:03:40Z
    audio: CASH ZONE
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 142.029
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.749
      additional property: Energy
        type: PropertyValue
        value: 0.508
      additional property: Speechiness
        type: PropertyValue
        value: 0.089
      additional property: Acousticness
        type: PropertyValue
        value: 0.354
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.099
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.596
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.786
      additional property: Key Name
      additional property: Mode Name
album: SPRINT

Key Name
type: PropertyValue
value: C#

Mode Name
type: PropertyValue
value: Minor

SPRINT
type: MusicAlbum
date published: 2025-06-21