Guillemer
type: MusicGroup
genre: celtic
genre: sea shanties
popularity: 12
followers: 458
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x85c71163bd3a08fce94919c0db1ac0e2e0e75335dd3e582b0ca390e52b224267
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953654
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953654
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4821728c-7be0-4474-a198-df4f260de1c4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4821728c-7be0-4474-a198-df4f260de1c4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4821728c-7be0-4474-a198-df4f260de1c4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T16:26:51Z
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 0x85c71163bd3a08fce94919c0db1ac0e2e0e75335dd3e582b0ca390e52b224267. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4821728c-7be0-4474-a198-df4f260de1c4.json and https://artists.proofprofile.net/proofs/artist/4821728c-7be0-4474-a198-df4f260de1c4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T16:26:51Z
album: Lettre d'Islande
  type: MusicAlbum
  date published: 1996-04-15
  track: La pauline
    type: MusicRecording
    duration: PT4M38S
    duration ms: 278000
    explicit: false
    by artist: Guillemer
    in album: Lettre d'Islande
      type: MusicAlbum
      date published: 1996-04-15
    genre: celtic
    genre: sea shanties
    isrc code: FRZWS9600701
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T20:13:19+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x063b994b2bc8ca2aa0d2db1f8835e87c279678708401b5ab306cf765f9d1b02d
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958462
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958462
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZWS9600701
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T23:17:53Z
    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 0x063b994b2bc8ca2aa0d2db1f8835e87c279678708401b5ab306cf765f9d1b02d. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/FRZWS9600701.
      date published: 2026-07-17T23:17:53Z
    audio: La pauline
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 132.637
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.63
      additional property: Energy
        type: PropertyValue
        value: 0.48
      additional property: Speechiness
        type: PropertyValue
        value: 0.042
      additional property: Acousticness
        type: PropertyValue
        value: 0.411
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.149
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.938
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.041
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Supplique à lorient
    type: MusicRecording
    duration: PT3M20S
    duration ms: 200533
    explicit: false
    by artist: Guillemer
    in album: Lettre d'Islande
      type: MusicAlbum
      date published: 1996-04-15
    genre: celtic
    genre: sea shanties
    isrc code: FRZWS9600709
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T00:55:35+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x27b732094ad605017d29acf9f94bfb8e4e0df183a5303e55838c9ac5e06d51da
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958224
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958224
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZWS9600709
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T02:28:43Z
    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 0x27b732094ad605017d29acf9f94bfb8e4e0df183a5303e55838c9ac5e06d51da. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRZWS9600709.
      date published: 2026-07-16T02:28:43Z
    audio: Supplique à lorient
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 82.789
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.352
      additional property: Energy
        type: PropertyValue
        value: 0.175
      additional property: Speechiness
        type: PropertyValue
        value: 0.038
      additional property: Acousticness
        type: PropertyValue
        value: 0.78
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.182
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.335
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
  track: Derniere maree
album: Escale
album: De Brest À Douarnenez
album: Bretagne chants de mer

Loudness (dB)
type: PropertyValue
value: -15.515

Key Name
type: PropertyValue
value: F

Mode Name
type: PropertyValue
value: Major

Derniere maree
type: MusicRecording
duration: PT4M5S
duration ms: 245733
explicit: false
by artist: Guillemer
in album: Lettre d'Islande
  type: MusicAlbum
  date published: 1996-04-15
genre: celtic
genre: sea shanties
isrc code: FRZWS9600712
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-17T21:45:49+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4341d001f985aee8efcba0330bebc26dc9e48017ee4db0509a6cc534aa57f80c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958462
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958462
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZWS9600712
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-17T23:17:53Z
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 0x4341d001f985aee8efcba0330bebc26dc9e48017ee4db0509a6cc534aa57f80c. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/FRZWS9600712.
  date published: 2026-07-17T23:17:53Z
audio: Derniere maree
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 113.297
  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: 0.463
  additional property: Energy
    type: PropertyValue
    value: 0.343
  additional property: Speechiness
    type: PropertyValue
    value: 0.095
  additional property: Acousticness
    type: PropertyValue
    value: 0.454
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.267
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.875
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.765
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Escale
type: MusicAlbum
date published: 2009-03-15

De Brest À Douarnenez
type: MusicAlbum
date published: 2009-03-16

Bretagne chants de mer
type: MusicAlbum
date published: 2012-07-23