Helena Roche
type: MusicGroup
popularity: 3
followers: 120
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x51873d2a934dc5a8d42c4b44c94a43b726f1cbde2688842b661c55c70ec046f4
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/5e3ce1c1-2962-4aca-ab64-d0a9f439b66f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5e3ce1c1-2962-4aca-ab64-d0a9f439b66f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5e3ce1c1-2962-4aca-ab64-d0a9f439b66f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x51873d2a934dc5a8d42c4b44c94a43b726f1cbde2688842b661c55c70ec046f4","name":"Helena Roche","registered_at":"2026-06-16T22:24:18Z","symbol":"NIM1194235","token_address":"0x9a353d6bbe2fbdc03d1191abb2794add3ffcd6fc","type":"artist","uuid":"5e3ce1c1-2962-4aca-ab64-d0a9f439b66f"}
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 0x51873d2a934dc5a8d42c4b44c94a43b726f1cbde2688842b661c55c70ec046f4. 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/5e3ce1c1-2962-4aca-ab64-d0a9f439b66f.json and https://artists.proofprofile.net/proofs/artist/5e3ce1c1-2962-4aca-ab64-d0a9f439b66f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x51873d2a934dc5a8d42c4b44c94a43b726f1cbde2688842b661c55c70ec046f4","name":"Helena Roche","registered_at":"2026-06-16T22:24:18Z","symbol":"NIM1194235","token_address":"0x9a353d6bbe2fbdc03d1191abb2794add3ffcd6fc","type":"artist","uuid":"5e3ce1c1-2962-4aca-ab64-d0a9f439b66f"}
album: Fragments
  type: MusicAlbum
  date published: 2020-03-30
album: Mélange
  type: MusicAlbum
  date published: 2021-11-26
  track: Mélange
    type: MusicRecording
    duration: PT1M55S
    duration ms: 115374
    explicit: false
    by artist: Helena Roche
    in album: Mélange
      type: MusicAlbum
      date published: 2021-11-26
    isrc code: SE5IB2156809
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T05:57:02+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe09c47df7b29ba104adaa3776300676aec7a394752402b3449b723e5b66b333c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958506
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958506
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5IB2156809
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T06:14:51Z
    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 0xe09c47df7b29ba104adaa3776300676aec7a394752402b3449b723e5b66b333c. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/SE5IB2156809.
      date published: 2026-07-18T06:14:51Z
    audio: Mélange
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 101.881
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.545
      additional property: Energy
        type: PropertyValue
        value: 0.041
      additional property: Speechiness
        type: PropertyValue
        value: 0.036
      additional property: Acousticness
        type: PropertyValue
        value: 0.996
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.937
      additional property: Liveness
        type: PropertyValue
        value: 0.097
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.111
      additional property: Loudness (dB)
        type: PropertyValue
        value: -26.627
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Folks
  type: MusicAlbum
  date published: 2022-03-25
album: Blue
  type: MusicAlbum
  date published: 2023-01-13