Y21
type: MusicGroup
popularity: 5
followers: 1
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x762f07ef53b14a1534d952f6c1e1dcd32510a79b4411b2f884218e0330b2ffdc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953871
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953871
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/073d8dfb-e896-4615-88a9-cb65b0299f14.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/073d8dfb-e896-4615-88a9-cb65b0299f14.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/073d8dfb-e896-4615-88a9-cb65b0299f14
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T01:46:03Z
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 0x762f07ef53b14a1534d952f6c1e1dcd32510a79b4411b2f884218e0330b2ffdc. Chain 2 (Bitcoin): anchored in block 953871 (2026-06-16T01:46:03Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/073d8dfb-e896-4615-88a9-cb65b0299f14.json and https://artists.proofprofile.net/proofs/artist/073d8dfb-e896-4615-88a9-cb65b0299f14.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T01:46:03Z
album: Echoes
  type: MusicAlbum
  date published: 2025-03-20
  track: Echoes
    type: MusicRecording
    duration: PT2M42S
    duration ms: 162992
    explicit: false
    by artist: Y21
    in album: Echoes
      type: MusicAlbum
      date published: 2025-03-20
    isrc code: QZK6N2591745
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T06:45:00+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0bc9136e9fb67cca4ec134109c08f908c6893d591510599d2dd99a3a5bf3b35a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956772
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956772
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6N2591745
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:01:46Z
    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 0x0bc9136e9fb67cca4ec134109c08f908c6893d591510599d2dd99a3a5bf3b35a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZK6N2591745.
      date published: 2026-07-05T10:01:46Z
    audio: Echoes
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 126.945
      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: 0.697
      additional property: Energy
        type: PropertyValue
        value: 0.573
      additional property: Speechiness
        type: PropertyValue
        value: 0.029
      additional property: Acousticness
        type: PropertyValue
        value: 0.812
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.914
      additional property: Liveness
        type: PropertyValue
        value: 0.109
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.28
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.415
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Mary Anne
  type: MusicAlbum
  date published: 2025-04-02
  track: Mary Anne
    type: MusicRecording
    duration: PT2M12S
    duration ms: 132000
    explicit: false
    by artist: Y21
    in album: Mary Anne
      type: MusicAlbum
      date published: 2025-04-02
    isrc code: QZK6L2582299
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T19:01:53+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0fbe0ca746d71ca6e4a38a6aa440afb3de64e3a672167bc38b3d632a5c525313
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956738
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956738
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6L2582299
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T04:47:21Z
    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 0x0fbe0ca746d71ca6e4a38a6aa440afb3de64e3a672167bc38b3d632a5c525313. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZK6L2582299.
      date published: 2026-07-05T04:47:21Z
    audio: Mary Anne
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 87.881
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.614
      additional property: Energy
        type: PropertyValue
        value: 0.574
      additional property: Speechiness
        type: PropertyValue
        value: 0.082
      additional property: Acousticness
        type: PropertyValue
        value: 0.126
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.786
      additional property: Liveness
        type: PropertyValue
        value: 0.099
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.101
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.402
      additional property: Key Name
      additional property: Mode Name
album: One Sunday Morning

Key Name
type: PropertyValue
value: F

Mode Name
type: PropertyValue
value: Major

One Sunday Morning
type: MusicAlbum
date published: 2025-09-12