Tuna Universitária do Minho
type: MusicGroup
genre: fado
popularity: 19
followers: 1273
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x35843f3609aa2d15234a0ed75027c7510e8db0af82ca4bc6c91411f6d282329b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953605
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953605
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/11ef4bf1-1aa6-4fe3-9ef1-49fa7e04133d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/11ef4bf1-1aa6-4fe3-9ef1-49fa7e04133d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/11ef4bf1-1aa6-4fe3-9ef1-49fa7e04133d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T07:39:50Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x35843f3609aa2d15234a0ed75027c7510e8db0af82ca4bc6c91411f6d282329b","name":"Tuna Universitária do Minho","registered_at":"2026-06-14T06:21:46Z","symbol":"NIM0365575","token_address":"0x8efbeeb01e40efca4b4732875dc32c1cb85b7d9e","type":"artist","uuid":"11ef4bf1-1aa6-4fe3-9ef1-49fa7e04133d"}
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 0x35843f3609aa2d15234a0ed75027c7510e8db0af82ca4bc6c91411f6d282329b. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11ef4bf1-1aa6-4fe3-9ef1-49fa7e04133d.json and https://artists.proofprofile.net/proofs/artist/11ef4bf1-1aa6-4fe3-9ef1-49fa7e04133d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T07:39:50Z
  text: {"copyright_id":"0x35843f3609aa2d15234a0ed75027c7510e8db0af82ca4bc6c91411f6d282329b","name":"Tuna Universitária do Minho","registered_at":"2026-06-14T06:21:46Z","symbol":"NIM0365575","token_address":"0x8efbeeb01e40efca4b4732875dc32c1cb85b7d9e","type":"artist","uuid":"11ef4bf1-1aa6-4fe3-9ef1-49fa7e04133d"}
album: Tuna Universitária do Minho (1992 Analog Edition)
  type: MusicAlbum
  date published: 1992-05-10
album: Tuna Universitária do Minho
  type: MusicAlbum
  date published: 2000-05-10
  track: Capas Negras
    type: MusicRecording
    duration: PT5M52S
    duration ms: 352066
    explicit: false
    by artist: Tuna Universitária do Minho
    in album: Tuna Universitária do Minho
      type: MusicAlbum
      date published: 2000-05-10
    genre: fado
    isrc code: GBSMU8042917
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T04:22:02+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x8adfb53410bc7a2cdc1bd99fe5d1979d644ca39c6eec066fa20b90e6f6124eda
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956634
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956634
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU8042917
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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 0x8adfb53410bc7a2cdc1bd99fe5d1979d644ca39c6eec066fa20b90e6f6124eda. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBSMU8042917.
      date published: 2026-07-04T10:04:33Z
    audio: Capas Negras
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 71.594
      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: 0.248
      additional property: Energy
        type: PropertyValue
        value: 0.331
      additional property: Speechiness
        type: PropertyValue
        value: 0.036
      additional property: Acousticness
        type: PropertyValue
        value: 0.935
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.021
      additional property: Liveness
        type: PropertyValue
        value: 0.117
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.276
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.253
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Terras de Portugal
    type: MusicRecording
    duration: PT1M48S
    duration ms: 108526
    explicit: false
    by artist: Tuna Universitária do Minho
    in album: Tuna Universitária do Minho
      type: MusicAlbum
      date published: 2000-05-10
    genre: fado
    isrc code: GBSMU8042923
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T23:13:57+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe627300c2c5a8db906e67797443b685bfaa8a65f1aae1c8cebd1a6e4743aae87
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956856
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956856
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU8042923
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T01:25:57Z
    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 0xe627300c2c5a8db906e67797443b685bfaa8a65f1aae1c8cebd1a6e4743aae87. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBSMU8042923.
      date published: 2026-07-06T01:25:57Z
    audio: Terras de Portugal
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 151.972
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.495
      additional property: Energy
        type: PropertyValue
        value: 0.522
      additional property: Speechiness
        type: PropertyValue
        value: 0.033
      additional property: Acousticness
        type: PropertyValue
        value: 0.704
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.189
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
  track: Boémia
album: Essência

Valence (Positivity)
type: PropertyValue
value: 0.835

Loudness (dB)
type: PropertyValue
value: -8.807

Key Name
type: PropertyValue
value: D

Mode Name
type: PropertyValue
value: Major

Boémia
type: MusicRecording
duration: PT2M35S
duration ms: 155677
explicit: false
by artist: Tuna Universitária do Minho
in album: Tuna Universitária do Minho
  type: MusicAlbum
  date published: 2000-05-10
genre: fado
isrc code: GBSMU8043086
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-16T06:08:10+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3d25a10c8be3b0d12cd6999b0230735248f2efaf9438112c29d78e1fef897d98
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958251
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958251
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU8043086
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-16T06:29:25Z
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 0x3d25a10c8be3b0d12cd6999b0230735248f2efaf9438112c29d78e1fef897d98. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/GBSMU8043086.
  date published: 2026-07-16T06:29:25Z
audio: Boémia
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 74.206
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.308
  additional property: Energy
    type: PropertyValue
    value: 0.643
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.261
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.363
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.747
  additional property: Loudness (dB)
    type: PropertyValue
    value: -6.263
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Essência
type: MusicAlbum
date published: 2014-01-01
track: Essência
  type: MusicRecording
  duration: PT2M32S
  duration ms: 152827
  explicit: false
  by artist: Tuna Universitária do Minho
  in album: Essência
    type: MusicAlbum
    date published: 2014-01-01
  genre: fado
  isrc code: GBSMU2353553
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-03T18:58:57+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x8bd12b2c0cc074d437fcd020b64ab7a6fccfe2f6cdd57d8958d2b2efe1a47903
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956576
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956576
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU2353553
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-04T02:06:47Z
  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 0x8bd12b2c0cc074d437fcd020b64ab7a6fccfe2f6cdd57d8958d2b2efe1a47903. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBSMU2353553.
    date published: 2026-07-04T02:06:47Z
  audio: Essência
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 114.92
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.664
    additional property: Energy
      type: PropertyValue
      value: 0.394
    additional property: Speechiness
      type: PropertyValue
      value: 0.033
    additional property: Acousticness
      type: PropertyValue
      value: 0.871
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.09
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.822
    additional property: Loudness (dB)
      type: PropertyValue
      value: -10.986
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Partizan
  type: MusicRecording
  duration: PT5M37S
  duration ms: 337393
  explicit: false
  by artist: Tuna Universitária do Minho
  in album: Essência
    type: MusicAlbum
    date published: 2014-01-01
  genre: fado
  isrc code: GBSMU2353554
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-17T10:36:04+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc2f494d10148e571076c9ec82a5bd1aa5162db398e16ee6dc58c5833d9fecfc6
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958401
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958401
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU2353554
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-17T11:10:25Z
  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 0xc2f494d10148e571076c9ec82a5bd1aa5162db398e16ee6dc58c5833d9fecfc6. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/GBSMU2353554.
    date published: 2026-07-17T11:10:25Z
  audio: Partizan
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 114.742
    additional property: Musical Key
      type: PropertyValue
      value: 9
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.395
    additional property: Energy
      type: PropertyValue
      value: 0.433
    additional property: Speechiness
      type: PropertyValue
      value: 0.048
    additional property: Acousticness
      type: PropertyValue
      value: 0.326
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.322
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.45
    additional property: Loudness (dB)
      type: PropertyValue
      value: -13.663
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Sonho
  type: MusicRecording
  duration: PT2M51S
  duration ms: 171023
  explicit: false
  by artist: Tuna Universitária do Minho
  in album: Essência
    type: MusicAlbum
    date published: 2014-01-01
  genre: fado
  isrc code: GBSMU2353555
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-04T09:47:59+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x42888e6b24359c11a3b501a8aeb2e283d65ae851dfb89f1242d202cb4c490f76
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956634
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956634
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Sonho
track: O Abraço Acontece

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU2353555

OTSTimestamp
type: PropertyValue
value: 2026-07-04T10:04:33Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42888e6b24359c11a3b501a8aeb2e283d65ae851dfb89f1242d202cb4c490f76. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBSMU2353555.
date published: 2026-07-04T10:04:33Z

Sonho
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 79.961
additional property: Musical Key
  type: PropertyValue
  value: 4
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.417
additional property: Energy
  type: PropertyValue
  value: 0.51
additional property: Speechiness
  type: PropertyValue
  value: 0.032
additional property: Acousticness
  type: PropertyValue
  value: 0.37
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.361
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.95
additional property: Loudness (dB)
  type: PropertyValue
  value: -11.275
additional property: Key Name
  type: PropertyValue
  value: E
additional property: Mode Name
  type: PropertyValue
  value: Minor

O Abraço Acontece
type: MusicRecording
duration: PT3M18S
duration ms: 198784
explicit: false
by artist: Tuna Universitária do Minho
in album: Essência
  type: MusicAlbum
  date published: 2014-01-01
genre: fado
isrc code: GBSMU2353556
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-03T04:38:39+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4b37b0327a8014828050b4f4ef1855ac0268789c87360fb1f6630f36883109fe
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956474
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956474
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU2353556
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-03T08:56:35Z
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 0x4b37b0327a8014828050b4f4ef1855ac0268789c87360fb1f6630f36883109fe. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBSMU2353556.
  date published: 2026-07-03T08:56:35Z
audio: O Abraço Acontece
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 120.043
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.534
  additional property: Energy
    type: PropertyValue
    value: 0.258
  additional property: Speechiness
    type: PropertyValue
    value: 0.031
  additional property: Acousticness
    type: PropertyValue
    value: 0.909
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.3
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.254
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.736
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor