Leon Adan (BR)
type: MusicGroup
popularity: 4
followers: 329
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3b64e8c0ad827721aa1fc3b699849601f02284b72d9c41e17a7c6f5a564091c8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5b7fd586-7fe2-4e2a-9d55-31fb4bd13cdf.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5b7fd586-7fe2-4e2a-9d55-31fb4bd13cdf.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5b7fd586-7fe2-4e2a-9d55-31fb4bd13cdf
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3b64e8c0ad827721aa1fc3b699849601f02284b72d9c41e17a7c6f5a564091c8","name":"Leon Adan (BR)","registered_at":"2026-06-16T21:30:47Z","symbol":"NIM1181470","token_address":"0x6d5b75fd52de701f00339bf219701f11f175895d","type":"artist","uuid":"5b7fd586-7fe2-4e2a-9d55-31fb4bd13cdf"}
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 0x3b64e8c0ad827721aa1fc3b699849601f02284b72d9c41e17a7c6f5a564091c8. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5b7fd586-7fe2-4e2a-9d55-31fb4bd13cdf.json and https://artists.proofprofile.net/proofs/artist/5b7fd586-7fe2-4e2a-9d55-31fb4bd13cdf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x3b64e8c0ad827721aa1fc3b699849601f02284b72d9c41e17a7c6f5a564091c8","name":"Leon Adan (BR)","registered_at":"2026-06-16T21:30:47Z","symbol":"NIM1181470","token_address":"0x6d5b75fd52de701f00339bf219701f11f175895d","type":"artist","uuid":"5b7fd586-7fe2-4e2a-9d55-31fb4bd13cdf"}
album: Desencanto
  type: MusicAlbum
  date published: 2021-03-25
album: Acabou a Cheia
  type: MusicAlbum
  date published: 2024-04-12
album: Acabou a Cheia
  type: MusicAlbum
  date published: 2024-04-12
album: Meu Maracá
  type: MusicAlbum
  date published: 2024-06-07
album: Meu Maracá
  type: MusicAlbum
  date published: 2024-06-07
album: Tua Sina
  type: MusicAlbum
  date published: 2024-07-12
album: Tua Sina
  type: MusicAlbum
  date published: 2024-07-12
album: Vou-Me Embora
  type: MusicAlbum
  date published: 2024-08-16
album: Vou-Me Embora
  type: MusicAlbum
  date published: 2024-08-16
album: Leon Adan
  type: MusicAlbum
  date published: 2024-09-27
album: Seja Como For
  type: MusicAlbum
  date published: 2024-11-08
album: Seja Como For
  type: MusicAlbum
  date published: 2024-11-08
  track: Seja Como For
    type: MusicRecording
    duration: PT5M18S
    duration ms: 318414
    explicit: false
    by artist: Leon Adan (BR)
    in album: Seja Como For
      type: MusicAlbum
      date published: 2024-11-08
    isrc code: BKZE82400006
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T11:05:51+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe5a2db9ae9cad3b2f6397c77d1a5d222f8c394560d2ae81c9c2a1dae16d8d394
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958724
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958724
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKZE82400006
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T11:19:01Z
    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 0xe5a2db9ae9cad3b2f6397c77d1a5d222f8c394560d2ae81c9c2a1dae16d8d394. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/BKZE82400006.
      date published: 2026-07-19T11:19:01Z
    audio: Seja Como For
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 108.031
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.632
      additional property: Energy
        type: PropertyValue
        value: 0.637
      additional property: Speechiness
        type: PropertyValue
        value: 0.037
      additional property: Acousticness
        type: PropertyValue
        value: 0.047
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.078
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.796
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.576
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Cabocla de Olinda
  type: MusicAlbum
  date published: 2025-03-14
album: Ladeira da Saudade (Eu Vou)
  type: MusicAlbum
  date published: 2025-04-25
album: Pássaro Negro
  type: MusicAlbum
  date published: 2025-05-29
  track: Pássaro Negro
    type: MusicRecording
    duration: PT3M45S
    duration ms: 225618
    explicit: false
    by artist: Leon Adan (BR)
    in album: Pássaro Negro
      type: MusicAlbum
      date published: 2025-05-29
    isrc code: BKZE82500003
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T13:04:14+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xf8623b7f0bdd7653abb8c0329b1f5d98017460034938404c4e124415ab16db73
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956545
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956545
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKZE82500003
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T19:59:51Z
    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
    audio: Pássaro Negro
  track: Seja Como For

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8623b7f0bdd7653abb8c0329b1f5d98017460034938404c4e124415ab16db73. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BKZE82500003.
date published: 2026-07-03T19:59:51Z

Pássaro Negro
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 125.007
additional property: Musical Key
  type: PropertyValue
  value: 4
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.756
additional property: Energy
  type: PropertyValue
  value: 0.785
additional property: Speechiness
  type: PropertyValue
  value: 0.054
additional property: Acousticness
  type: PropertyValue
  value: 0.446
additional property: Instrumentalness
  type: PropertyValue
  value: 0.006
additional property: Liveness
  type: PropertyValue
  value: 0.156
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.877
additional property: Loudness (dB)
  type: PropertyValue
  value: -6.46
additional property: Key Name
  type: PropertyValue
  value: E
additional property: Mode Name
  type: PropertyValue
  value: Major

Seja Como For
type: MusicRecording
duration: PT5M18S
duration ms: 318414
explicit: false
by artist: Leon Adan (BR)
in album: Pássaro Negro
  type: MusicAlbum
  date published: 2025-05-29
isrc code: BKZE82400006
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe5a2db9ae9cad3b2f6397c77d1a5d222f8c394560d2ae81c9c2a1dae16d8d394
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958897
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958897
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKZE82400006
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-20T14:57:46Z
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 0xe5a2db9ae9cad3b2f6397c77d1a5d222f8c394560d2ae81c9c2a1dae16d8d394. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/BKZE82400006.
  date published: 2026-07-20T14:57:46Z
audio: Seja Como For
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 108.031
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.632
  additional property: Energy
    type: PropertyValue
    value: 0.637
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.047
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.078
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.796
  additional property: Loudness (dB)
    type: PropertyValue
    value: -9.576
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Minor