Guðmundur Jónsson
type: MusicGroup
genre: classic-icelandic-pop
description: Guðmundur Jónsson (born 11 December 1953) is an Icelandic architect who lives in Norway. He was educated at the Oslo School of Architecture and Design (1975–1981) and ILAUD (International Laboratory
popularity: 7
followers: 304
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x921c47235c484a33ed28e213e26990c264d95625001c7ee8518085d7e27d3634
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954516
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954516
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a0ad2f28-1021-4a70-8aa1-ea502a97ee88.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a0ad2f28-1021-4a70-8aa1-ea502a97ee88.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a0ad2f28-1021-4a70-8aa1-ea502a97ee88
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T07:04:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x921c47235c484a33ed28e213e26990c264d95625001c7ee8518085d7e27d3634","name":"Guðmundur Jónsson","registered_at":"2026-06-20T05:41:54Z","symbol":"NIM1529457","token_address":"0xd17bd00fa7cc745abbbe0a93295248efe3176389","type":"artist","uuid":"a0ad2f28-1021-4a70-8aa1-ea502a97ee88"}
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 0x921c47235c484a33ed28e213e26990c264d95625001c7ee8518085d7e27d3634. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a0ad2f28-1021-4a70-8aa1-ea502a97ee88.json and https://artists.proofprofile.net/proofs/artist/a0ad2f28-1021-4a70-8aa1-ea502a97ee88.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T07:04:44Z
  text: {"copyright_id":"0x921c47235c484a33ed28e213e26990c264d95625001c7ee8518085d7e27d3634","name":"Guðmundur Jónsson","registered_at":"2026-06-20T05:41:54Z","symbol":"NIM1529457","token_address":"0xd17bd00fa7cc745abbbe0a93295248efe3176389","type":"artist","uuid":"a0ad2f28-1021-4a70-8aa1-ea502a97ee88"}
album: Metsölulög
  type: MusicAlbum
  date published: 1990-01-01
  track: Hraustir menn
    type: MusicRecording
    duration: PT2M24S
    duration ms: 144706
    explicit: false
    by artist: Karlakór Reykjavíkur
    by artist: Guðmundur Jónsson
    in album: Metsölulög
      type: MusicAlbum
      date published: 1990-01-01
    genre: classic-icelandic-pop
    genre: icelandic-choir
    genre: icelandic-traditional
    isrc code: ISA109002601
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-31T15:22:52+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x223ed65cbe5f22a4e626ebad8fb26b0883532b1d5c14e561aaee9241771916a5
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 960422
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/960422
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ISA109002601
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-31T15:27:29Z
    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 0x223ed65cbe5f22a4e626ebad8fb26b0883532b1d5c14e561aaee9241771916a5. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/ISA109002601.
      date published: 2026-07-31T15:27:29Z
    audio: Hraustir menn
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 129.131
      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: 0.501
      additional property: Energy
        type: PropertyValue
        value: 0.187
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      additional property: Acousticness
        type: PropertyValue
        value: 0.995
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.11
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.599
      additional property: Loudness (dB)
        type: PropertyValue
        value: -17.085
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Á leið til Mandalay
    type: MusicRecording
    duration: PT3M44S
    duration ms: 224165
    explicit: false
    by artist: Karlakór Reykjavíkur
    by artist: Guðmundur Jónsson
    in album: Metsölulög
      type: MusicAlbum
      date published: 1990-01-01
    genre: classic-icelandic-pop
    genre: icelandic-choir
    genre: icelandic-traditional
    isrc code: ISA109002606
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-08-01T00:23:35+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x05af1a11d81c4ce4e279acb4a8f4cc9e50b87517e167bf175ee964186c39f9f4
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 960489
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/960489
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ISA109002606
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-08-01T00:40:43Z
    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 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 0x05af1a11d81c4ce4e279acb4a8f4cc9e50b87517e167bf175ee964186c39f9f4. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/ISA109002606.
      date published: 2026-08-01T00:40:43Z
    audio: Á leið til Mandalay
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 124.058
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.544
      additional property: Energy
        type: PropertyValue
        value: 0.092
      additional property: Speechiness
        type: PropertyValue
        value: 0.037
      additional property: Acousticness
        type: PropertyValue
        value: 0.995
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Hljóðritanir frá síðari árum
album: Hljóðritanir frá fyrri árum
album: Atriði úr óperum
album: Guðrún Á. Símonar og Guðmundur Jónsson
album: Lax lax lax

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.158

Valence (Positivity)
type: PropertyValue
value: 0.32

Loudness (dB)
type: PropertyValue
value: -20.163

Key Name
type: PropertyValue
value: C

Mode Name
type: PropertyValue
value: Major

Hljóðritanir frá síðari árum
type: MusicAlbum
date published: 1990-01-01

Hljóðritanir frá fyrri árum
type: MusicAlbum
date published: 1990-01-01

Atriði úr óperum
type: MusicAlbum
date published: 1990-01-01

Guðrún Á. Símonar og Guðmundur Jónsson
type: MusicAlbum
date published: 1975-01-01
track: Loksins komin jól
  type: MusicRecording
  duration: PT2M12S
  duration ms: 132260
  explicit: false
  by artist: Guðrún Á. Símonar
  by artist: Guðmundur Jónsson
  in album: Guðrún Á. Símonar og Guðmundur Jónsson
    type: MusicAlbum
    date published: 1975-01-01
  isrc code: ISA110100322
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T18:35:44+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x3ce608d332912379adba4447750f393a5a7838f586a938553f0ebdedd22eed28
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957120
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957120
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ISA110100322
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:22:41Z
  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 0x3ce608d332912379adba4447750f393a5a7838f586a938553f0ebdedd22eed28. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ISA110100322.
    date published: 2026-07-08T03:22:41Z
  audio: Loksins komin jól
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 153.082
    additional property: Musical Key
      type: PropertyValue
      value: 9
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.613
    additional property: Energy
      type: PropertyValue
      value: 0.37
    additional property: Speechiness
      type: PropertyValue
      value: 0.029
    additional property: Acousticness
      type: PropertyValue
      value: 0.162
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.264
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.818
    additional property: Loudness (dB)
      type: PropertyValue
      value: -12.308
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Meiri snjó
  type: MusicRecording
  duration: PT3M2S
  duration ms: 182369
  explicit: false
  by artist: Guðrún Á. Símonar
  in album: Guðrún Á. Símonar og Guðmundur Jónsson
    type: MusicAlbum
    date published: 1975-01-01
  isrc code: ISA110100323
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-30T17:34:16+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x7da9cc73b324a7e79e537dde0fdc4da7c71f8fa47cc33fde761fc6e251bf2336
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960288
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960288
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ISA110100323
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T17:41:38Z
  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 0x7da9cc73b324a7e79e537dde0fdc4da7c71f8fa47cc33fde761fc6e251bf2336. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/ISA110100323.
    date published: 2026-07-30T17:41:38Z
  audio: Meiri snjó
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 132.681
    additional property: Musical Key
      type: PropertyValue
      value: 3
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.743
    additional property: Energy
      type: PropertyValue
      value: 0.339
    additional property: Speechiness
      type: PropertyValue
      value: 0.037
    additional property: Acousticness
      type: PropertyValue
      value: 0.565
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.102
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.717
    additional property: Loudness (dB)
      type: PropertyValue
      value: -12.685
    additional property: Key Name
      type: PropertyValue
      value: Eb
    additional property: Mode Name
      type: PropertyValue
      value: Major

Lax lax lax
type: MusicAlbum
date published: 1969-01-01
track: Eyjólfur
  type: MusicRecording
  duration: PT2M39S
  duration ms: 159846
  explicit: false
  by artist: Guðmundur Jónsson
  in album: Lax lax lax
    type: MusicAlbum
    date published: 1969-01-01
  genre: classic-icelandic-pop
  isrc code: ISA109203901
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-08-01T01:04:56+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x8e5c600a4fa2f90c17996e9b34613b50f91dd6ef02c1b59b42d04ceeb03eb3d6
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960494
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960494
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ISA109203901
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-08-01T01:44:32Z
  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 0x8e5c600a4fa2f90c17996e9b34613b50f91dd6ef02c1b59b42d04ceeb03eb3d6. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/ISA109203901.
    date published: 2026-08-01T01:44:32Z
  audio: Eyjólfur
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 131.91
    additional property: Musical Key
      type: PropertyValue
      value: 8
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.654
    additional property: Energy
      type: PropertyValue
      value: 0.586
    additional property: Speechiness
      type: PropertyValue
      value: 0.03
    additional property: Acousticness
      type: PropertyValue
      value: 0.276
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.158
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.964
    additional property: Loudness (dB)
      type: PropertyValue
      value: -12.978
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Lax, lax, lax
  type: MusicRecording
  duration: PT2M34S
  duration ms: 154691
  explicit: false
  by artist: Guðmundur Jónsson
  in album: Lax lax lax
    type: MusicAlbum
    date published: 1969-01-01
  genre: classic-icelandic-pop
  isrc code: ISA109203904
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-22T16:05:07+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x395a06f1ec8c59709509cc28c100a0e4690c2b65b5292db1629f58ad599f7b09
  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/ISA109203904
  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 0x395a06f1ec8c59709509cc28c100a0e4690c2b65b5292db1629f58ad599f7b09. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ISA109203904.
    date published: 2026-07-02T03:55:08Z
  audio: Lax, lax, lax
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 128.785
    additional property: Musical Key
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      value: 10
    additional property: Mode (Major/Minor)
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      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
      type: PropertyValue
      value: 0.689
    additional property: Speechiness
      type: PropertyValue
      value: 0.224
    additional property: Acousticness
      type: PropertyValue
      value: 0.634
    additional property: Instrumentalness
      type: PropertyValue
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    additional property: Liveness
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    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.832
    additional property: Loudness (dB)
      type: PropertyValue
      value: -14.814
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
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track: Jón tröll
  type: MusicRecording
  duration: PT2M53S
  duration ms: 173545
  explicit: false
  by artist: Guðmundur Jónsson
  in album: Lax lax lax
    type: MusicAlbum
    date published: 1969-01-01
  genre: classic-icelandic-pop
  isrc code: ISA109203909
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
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    value: 2026-07-30T09:06:53+00:00
  additional property: CopyrightChainExplorerURL
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    value: https://explorer.copyrightchains.com/tx/0x5ee045d6bb3372841013a2df5f1e26126cf37f043942a600cf378cc0d0213451
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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    value: 960236
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960236
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Jón tröll

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ISA109203909

OTSTimestamp
type: PropertyValue
value: 2026-07-30T09:37:10Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee045d6bb3372841013a2df5f1e26126cf37f043942a600cf378cc0d0213451. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ISA109203909.
date published: 2026-07-30T09:37:10Z

Jón tröll
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additional property: Tempo (BPM)
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additional property: Musical Key
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additional property: Mode (Major/Minor)
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additional property: Time Signature
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  value: 5
additional property: Danceability
  type: PropertyValue
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additional property: Energy
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additional property: Speechiness
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additional property: Acousticness
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additional property: Instrumentalness
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additional property: Liveness
  type: PropertyValue
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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additional property: Key Name
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additional property: Mode Name
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