Per Björsund
type: MusicGroup
genre: choral
popularity: 4
followers: 12
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3aa3522337a957cf77be2667fc3d30d50e8258ef5b205f17088a64e69c85fd19
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953972
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953972
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2b01878a-4d7d-4e77-ac78-f790e9da2eb7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2b01878a-4d7d-4e77-ac78-f790e9da2eb7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2b01878a-4d7d-4e77-ac78-f790e9da2eb7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T16:31:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3aa3522337a957cf77be2667fc3d30d50e8258ef5b205f17088a64e69c85fd19","name":"Per Björsund","registered_at":"2026-06-16T04:30:19Z","symbol":"NIM0937932","token_address":"0x7be12099db1155c42e28e58ee0d22cb276c0bf4d","type":"artist","uuid":"2b01878a-4d7d-4e77-ac78-f790e9da2eb7"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa3522337a957cf77be2667fc3d30d50e8258ef5b205f17088a64e69c85fd19. Chain 2 (Bitcoin): anchored in block 953972 (2026-06-16T16:31:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b01878a-4d7d-4e77-ac78-f790e9da2eb7.json and https://artists.proofprofile.net/proofs/artist/2b01878a-4d7d-4e77-ac78-f790e9da2eb7.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T16:31:10Z
  text: {"copyright_id":"0x3aa3522337a957cf77be2667fc3d30d50e8258ef5b205f17088a64e69c85fd19","name":"Per Björsund","registered_at":"2026-06-16T04:30:19Z","symbol":"NIM0937932","token_address":"0x7be12099db1155c42e28e58ee0d22cb276c0bf4d","type":"artist","uuid":"2b01878a-4d7d-4e77-ac78-f790e9da2eb7"}
track: Rachmaninov: Vespers, Op. 37: IV. Svete tikhiy
  type: MusicRecording
  duration: PT3M2S
  duration ms: 182400
  explicit: false
  by artist: Sergei Rachmaninoff
  by artist: Swedish Radio Choir
  by artist: Per Björsund
  by artist: Tõnu Kaljuste
  in album: Rachmaninov - Vespers
    type: MusicAlbum
    date published: 1995
  genre: classical
  genre: classical-piano
  genre: concerto
  isrc code: GBAYC9400836
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-29T18:54:20+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc0950e8c7c7263a21328d3cdb8de6a0d41a7240f24567561a2ddb3a2fffeebad
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960145
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960145
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9400836
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-29T21:13:37Z
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0950e8c7c7263a21328d3cdb8de6a0d41a7240f24567561a2ddb3a2fffeebad. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9400836 — a six-check JSON result.
    date published: 2026-07-29T21:13:37Z
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    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 101.273
    additional property: Musical Key
      type: PropertyValue
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    additional property: Mode (Major/Minor)
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      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.141
    additional property: Energy
      type: PropertyValue
      value: 0.028
    additional property: Speechiness
      type: PropertyValue
      value: 0.045
    additional property: Acousticness
      type: PropertyValue
      value: 0.99
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.028
    additional property: Liveness
      type: PropertyValue
      value: 0.106
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.037
    additional property: Loudness (dB)
      type: PropertyValue
      value: -36.378
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Rachmaninov: Vespers, Op. 37: VI. Bogoroditse Devo
  type: MusicRecording
  duration: PT2M40S
  duration ms: 160893
  explicit: false
  by artist: Sergei Rachmaninoff
  by artist: Tõnu Kaljuste
  by artist: Nils Högman
  by artist: Per Björsund
  by artist: Swedish Radio Choir
  in album: Rachmaninov - Vespers
    type: MusicAlbum
    date published: 1995
  genre: classical
  genre: classical-piano
  genre: concerto
  isrc code: GBAYC9400838
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-23T10:04:20+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x02b522556f1158be38b8143bf746a6c04483b6bd05af8e03b54e9c8034ad4108
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956304
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956304
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9400838
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:55:08Z
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b522556f1158be38b8143bf746a6c04483b6bd05af8e03b54e9c8034ad4108. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9400838 — a six-check JSON result.
    date published: 2026-07-02T03:55:08Z
  audio: Rachmaninov: Vespers, Op. 37: VI. Bogoroditse Devo
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 137.668
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.183
    additional property: Energy
      type: PropertyValue
      value: 0.067
    additional property: Speechiness
      type: PropertyValue
      value: 0.044
    additional property: Acousticness
      type: PropertyValue
      value: 0.993
    additional property: Instrumentalness
    additional property: Liveness
    additional property: Valence (Positivity)
    additional property: Loudness (dB)
    additional property: Key Name
    additional property: Mode Name

Instrumentalness
type: PropertyValue
value: 0.324

Liveness
type: PropertyValue
value: 0.079

Valence (Positivity)
type: PropertyValue
value: 0.037

Loudness (dB)
type: PropertyValue
value: -31.29

Key Name
type: PropertyValue
value: F

Mode Name
type: PropertyValue
value: Major

Rachmaninov: Vespers, Op. 37: VI. Bogoroditse Devo
type: MusicRecording
duration: PT2M43S
duration ms: 163453
explicit: false
by artist: Sergei Rachmaninoff
by artist: Tõnu Kaljuste
by artist: Nils Högman
by artist: Per Björsund
by artist: Swedish Radio Choir
in album: Rachmaninov: The Last Romantic Hero
  type: MusicAlbum
  date published: 2023-04-01
genre: classical
genre: classical-piano
genre: concerto
isrc code: GBAYC9400838
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-23T10:04:20+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x02b522556f1158be38b8143bf746a6c04483b6bd05af8e03b54e9c8034ad4108
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9400838
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b522556f1158be38b8143bf746a6c04483b6bd05af8e03b54e9c8034ad4108. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9400838 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Rachmaninov: Vespers, Op. 37: VI. Bogoroditse Devo
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 96.751
  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
    type: PropertyValue
    value: 0.038
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.183
  additional property: Liveness
    type: PropertyValue
    value: 0.069
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.038
  additional property: Loudness (dB)
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  additional property: Key Name
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  additional property: Mode Name
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