Opció K-95
type: MusicGroup
genre: punk
description: Opció k-95 is a Catalan Oi!/streetpunk band formed in Barcelona in September 1995. Their lyrics include praise for the secession of the Països Catalans (Catalan Countries). They consider themselves re
popularity: 15
followers: 2218
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc8b390173637e94e37b166f2fdbd4c77980826dfc7fbb770d1dcda9860e7bcd5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953695
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953695
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6e78ee7b-3ea4-4c98-968c-8119acf74fde.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6e78ee7b-3ea4-4c98-968c-8119acf74fde.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6e78ee7b-3ea4-4c98-968c-8119acf74fde
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T21:42:01Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc8b390173637e94e37b166f2fdbd4c77980826dfc7fbb770d1dcda9860e7bcd5","name":"Opció K-95","registered_at":"2026-06-14T15:59:39Z","symbol":"NIM0503419","token_address":"0x5bdf4908c42134db4b4459e1efc626fbbc30a7ac","type":"artist","uuid":"6e78ee7b-3ea4-4c98-968c-8119acf74fde"}
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 0xc8b390173637e94e37b166f2fdbd4c77980826dfc7fbb770d1dcda9860e7bcd5. Chain 2 (Bitcoin): anchored in block 953695 (2026-06-14T21:42:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6e78ee7b-3ea4-4c98-968c-8119acf74fde.json and https://artists.proofprofile.net/proofs/artist/6e78ee7b-3ea4-4c98-968c-8119acf74fde.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T21:42:01Z
  text: {"copyright_id":"0xc8b390173637e94e37b166f2fdbd4c77980826dfc7fbb770d1dcda9860e7bcd5","name":"Opció K-95","registered_at":"2026-06-14T15:59:39Z","symbol":"NIM0503419","token_address":"0x5bdf4908c42134db4b4459e1efc626fbbc30a7ac","type":"artist","uuid":"6e78ee7b-3ea4-4c98-968c-8119acf74fde"}
album: Cap oportunitat
  type: MusicAlbum
  date published: 1995-02-17
album: Mai morirem
  type: MusicAlbum
  date published: 1999-09-11
  track: Mai morirem
    type: MusicRecording
    duration: PT2M7S
    duration ms: 127869
    explicit: false
    by artist: Opció K-95
    in album: Mai morirem
      type: MusicAlbum
      date published: 1999-09-11
    genre: punk
    isrc code: QZDA72174135
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T08:58:00+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xfedbb3af75de57d308cbdf6c8a2c1e4461ef1486e8d2c678cfe7cd24999280c8
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958857
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958857
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA72174135
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T12:01:00Z
    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 0xfedbb3af75de57d308cbdf6c8a2c1e4461ef1486e8d2c678cfe7cd24999280c8. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:01:00Z), 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/QZDA72174135.
      date published: 2026-07-20T12:01:00Z
    audio: Mai morirem
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 106.552
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.638
      additional property: Energy
        type: PropertyValue
        value: 0.716
      additional property: Speechiness
        type: PropertyValue
        value: 0.094
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.344
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.632
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.105
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Company
    type: MusicRecording
    duration: PT3M51S
    duration ms: 231157
    explicit: false
    by artist: Opció K-95
    in album: Mai morirem
      type: MusicAlbum
      date published: 1999-09-11
    genre: punk
    isrc code: QZDA72174139
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
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    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xcf6771ae1e28be5711dd8f5d206048cee4b11239a5ce8ed6a91e17e129f567f9
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958846
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA72174139
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T08:14:15Z
    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 0xcf6771ae1e28be5711dd8f5d206048cee4b11239a5ce8ed6a91e17e129f567f9. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/QZDA72174139.
      date published: 2026-07-20T08:14:15Z
    audio: Company
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 111.661
      additional property: Musical Key
        type: PropertyValue
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      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.384
      additional property: Energy
        type: PropertyValue
        value: 0.534
      additional property: Speechiness
        type: PropertyValue
        value: 0.067
      additional property: Acousticness
        type: PropertyValue
        value: 0.003
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
  track: Oi! per Catalunya
  track: Blau i grana
album: Terra Cremada
album: Reneix

Liveness
type: PropertyValue
value: 0.211

Valence (Positivity)
type: PropertyValue
value: 0.209

Loudness (dB)
type: PropertyValue
value: -11.02

Key Name
type: PropertyValue
value: E

Mode Name
type: PropertyValue
value: Minor

Oi! per Catalunya
type: MusicRecording
duration: PT4M2S
duration ms: 242991
explicit: false
by artist: Opció K-95
in album: Mai morirem
  type: MusicAlbum
  date published: 1999-09-11
genre: punk
isrc code: QZDA72174141
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-15T11:07:26+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6d98a560a7e63e93f4eb9acb9cbea073f05d3d5c0403dec3ad484eaf40aa3150
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958152
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958152
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA72174141
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-15T14:05:16Z
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 0x6d98a560a7e63e93f4eb9acb9cbea073f05d3d5c0403dec3ad484eaf40aa3150. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:05:16Z), 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/QZDA72174141.
  date published: 2026-07-15T14:05:16Z
audio: Oi! per Catalunya
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 107.971
  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: 0.402
  additional property: Energy
    type: PropertyValue
    value: 0.672
  additional property: Speechiness
    type: PropertyValue
    value: 0.064
  additional property: Acousticness
    type: PropertyValue
    value: 0
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.121
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.631
  additional property: Loudness (dB)
    type: PropertyValue
    value: -10.05
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Blau i grana
type: MusicRecording
duration: PT3M15S
duration ms: 195552
explicit: false
by artist: Opció K-95
in album: Mai morirem
  type: MusicAlbum
  date published: 1999-09-11
genre: punk
isrc code: QZDA72174143
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-03T16:40:46+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd69b2643fdfd9cdae3e3a7b579fbb52787a0b28cace8544b039304c822d85a06
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956551
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956551
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA72174143
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-03T21:18:05Z
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 0xd69b2643fdfd9cdae3e3a7b579fbb52787a0b28cace8544b039304c822d85a06. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZDA72174143.
  date published: 2026-07-03T21:18:05Z
audio: Blau i grana
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 104.76
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.452
  additional property: Energy
    type: PropertyValue
    value: 0.905
  additional property: Speechiness
    type: PropertyValue
    value: 0.239
  additional property: Acousticness
    type: PropertyValue
    value: 0.007
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.91
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.212
  additional property: Loudness (dB)
    type: PropertyValue
    value: -10.222
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Terra Cremada
type: MusicAlbum
date published: 2004-03-09
track: Rosa de Foc
  type: MusicRecording
  duration: PT3M5S
  duration ms: 185312
  explicit: false
  by artist: Opció K-95
  in album: Terra Cremada
    type: MusicAlbum
    date published: 2004-03-09
  genre: punk
  isrc code: QZMEQ2080571
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-16T09:26:55+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xd97a15f5d8a264290232343ea4c597957de73cecf19616165d53068f9f02fd57
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958276
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958276
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEQ2080571
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-16T12:29:22Z
  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 0xd97a15f5d8a264290232343ea4c597957de73cecf19616165d53068f9f02fd57. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:29:22Z), 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/QZMEQ2080571.
    date published: 2026-07-16T12:29:22Z
  audio: Rosa de Foc
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 119.399
    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: 0.445
    additional property: Energy
      type: PropertyValue
      value: 0.966
    additional property: Speechiness
      type: PropertyValue
      value: 0.075
    additional property: Acousticness
      type: PropertyValue
      value: 0.001
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.192
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.271
    additional property: Loudness (dB)
      type: PropertyValue
      value: -3.175
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: BCN 12-O
  type: MusicRecording
  duration: PT2M53S
  duration ms: 173766
  explicit: false
  by artist: Opció K-95
  in album: Terra Cremada
    type: MusicAlbum
    date published: 2004-03-09
  genre: punk
  isrc code: QZMEQ2080573
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-21T03:37:24+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xa35901dfe8c2c021dbe9bb7ec49bae68ad18b15d961f2f457d88be35207a0956
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958959
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958959
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEQ2080573
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-21T03:51:22Z
  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 0xa35901dfe8c2c021dbe9bb7ec49bae68ad18b15d961f2f457d88be35207a0956. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZMEQ2080573.
    date published: 2026-07-21T03:51:22Z
  audio: BCN 12-O
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 114.61
    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: 0.433
    additional property: Energy
      type: PropertyValue
      value: 0.97
    additional property: Speechiness
      type: PropertyValue
      value: 0.074
    additional property: Acousticness
      type: PropertyValue
      value: 0.001
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.253
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.434
    additional property: Loudness (dB)
      type: PropertyValue
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    additional property: Key Name
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    additional property: Mode Name
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Reneix
type: MusicAlbum
date published: 2010-03-09
track: 6.10.34
  type: MusicRecording
  duration: PT3M37S
  duration ms: 217965
  explicit: false
  by artist: Opció K-95
  in album: Reneix
    type: MusicAlbum
    date published: 2010-03-09
  genre: punk
  isrc code: QZFZ62073383
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T15:38:18+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x455beefb545dd45f1d2833b25931480b9f97696ecdbbb88e1c4fda74cf56be51
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956826
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956826
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ62073383
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-05T19:27:56Z
  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 0x455beefb545dd45f1d2833b25931480b9f97696ecdbbb88e1c4fda74cf56be51. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZFZ62073383.
    date published: 2026-07-05T19:27:56Z
  audio: 6.10.34
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 131.497
    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: 0.384
    additional property: Energy
      type: PropertyValue
      value: 0.97
    additional property: Speechiness
      type: PropertyValue
      value: 0.262
    additional property: Acousticness
      type: PropertyValue
      value: 0.001
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.004
    additional property: Liveness
      type: PropertyValue
      value: 0.359
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.473
    additional property: Loudness (dB)
      type: PropertyValue
      value: -4.056
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: La forja de la història
  type: MusicRecording
  duration: PT2M29S
  duration ms: 149968
  explicit: false
  by artist: Opció K-95
  in album: Reneix
    type: MusicAlbum
    date published: 2010-03-09
  genre: punk
  isrc code: QZFZ62073393
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-17T11:39:16+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x4884444a07db0ddd5b76afe072d49864c1cfbd44129fef2ae368100982ee9a88
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958444
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958444
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ62073393
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-17T19:12:23Z
  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 0x4884444a07db0ddd5b76afe072d49864c1cfbd44129fef2ae368100982ee9a88. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZFZ62073393.
    date published: 2026-07-17T19:12:23Z
  audio: La forja de la història
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 118.19
    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: 0.479
    additional property: Energy
      type: PropertyValue
      value: 0.961
    additional property: Speechiness
      type: PropertyValue
      value: 0.146
    additional property: Acousticness
      type: PropertyValue
      value: 0.004
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.106
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.658
    additional property: Loudness (dB)
      type: PropertyValue
      value: -4.643
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Terra de Sang
  type: MusicRecording
  duration: PT10M5S
  duration ms: 605936
  explicit: false
  by artist: Opció K-95
  in album: Reneix
    type: MusicAlbum
    date published: 2010-03-09
  genre: punk
  isrc code: QZFZ62073395
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-04T20:42:20+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xe4b592c8304731335f547ef88983c4d086d236f9269bff4f58c2e2af9086f025
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956738
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956738
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Terra de Sang

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ62073395

OTSTimestamp
type: PropertyValue
value: 2026-07-05T04:47:21Z

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 0xe4b592c8304731335f547ef88983c4d086d236f9269bff4f58c2e2af9086f025. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZFZ62073395.
date published: 2026-07-05T04:47:21Z

Terra de Sang
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 128.012
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: 0.454
additional property: Energy
  type: PropertyValue
  value: 0.553
additional property: Speechiness
  type: PropertyValue
  value: 0.303
additional property: Acousticness
  type: PropertyValue
  value: 0.006
additional property: Instrumentalness
  type: PropertyValue
  value: 0.001
additional property: Liveness
  type: PropertyValue
  value: 0.187
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.109
additional property: Loudness (dB)
  type: PropertyValue
  value: -5.335
additional property: Key Name
  type: PropertyValue
  value: C
additional property: Mode Name
  type: PropertyValue
  value: Major