Sterfson Ferreira
type: MusicGroup
popularity: 17
followers: 188
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3134e292b5cffd80fc94a33df09c5cec61b1c8a2bfa89638b76b292d791bbd57
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953636
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953636
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/36ee2411-e399-4f59-90e9-16779740751a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/36ee2411-e399-4f59-90e9-16779740751a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/36ee2411-e399-4f59-90e9-16779740751a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T13:03:42Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3134e292b5cffd80fc94a33df09c5cec61b1c8a2bfa89638b76b292d791bbd57","name":"Sterfson Ferreira","registered_at":"2026-06-14T10:13:23Z","symbol":"NIM0420787","token_address":"0xe09bb5bd7b92afcd01e0dc58d294ee662997734e","type":"artist","uuid":"36ee2411-e399-4f59-90e9-16779740751a"}
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 0x3134e292b5cffd80fc94a33df09c5cec61b1c8a2bfa89638b76b292d791bbd57. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/36ee2411-e399-4f59-90e9-16779740751a.json and https://artists.proofprofile.net/proofs/artist/36ee2411-e399-4f59-90e9-16779740751a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T15:20:52Z
  text: {"copyright_id":"0x3134e292b5cffd80fc94a33df09c5cec61b1c8a2bfa89638b76b292d791bbd57","name":"Sterfson Ferreira","registered_at":"2026-06-14T10:13:23Z","symbol":"NIM0420787","token_address":"0xe09bb5bd7b92afcd01e0dc58d294ee662997734e","type":"artist","uuid":"36ee2411-e399-4f59-90e9-16779740751a"}
album: Só Melanina
  type: MusicAlbum
  date published: 2022-11-18
album: Só Não Quero Te Perder
  type: MusicAlbum
  date published: 2022-12-23
  track: Só Não Quero Te Perder
    type: MusicRecording
    duration: PT3M18S
    duration ms: 198276
    explicit: false
    by artist: Sterfson Ferreira
    in album: Só Não Quero Te Perder
      type: MusicAlbum
      date published: 2022-12-23
    isrc code: BKSTS2200003
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T05:25:52+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2a5fd6070079b52f83b02f88d5a2a8fc07a1de2c62a8af554831b90c6fa11e26
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958373
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958373
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKSTS2200003
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T06:09:33Z
    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 0x2a5fd6070079b52f83b02f88d5a2a8fc07a1de2c62a8af554831b90c6fa11e26. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/BKSTS2200003.
      date published: 2026-07-17T06:09:33Z
    audio: Só Não Quero Te Perder
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 100.067
      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: 0.519
      additional property: Energy
        type: PropertyValue
        value: 0.324
      additional property: Speechiness
        type: PropertyValue
        value: 0.028
      additional property: Acousticness
        type: PropertyValue
        value: 0.533
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.079
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.192
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.998
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Conte 1, 2, 3
  type: MusicAlbum
  date published: 2023-04-28
  track: Conte 1, 2, 3
    type: MusicRecording
    duration: PT2M50S
    duration ms: 170692
    explicit: false
    by artist: Sterfson Ferreira
    in album: Conte 1, 2, 3
      type: MusicAlbum
      date published: 2023-04-28
    isrc code: BKSTS2300001
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T06:08:03+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xbca967a31b0c2091c58a9097818152ef2d7c331f70bd90d10a20c24fdd084a69
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956484
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956484
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKSTS2300001
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T10:47:44Z
    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 0xbca967a31b0c2091c58a9097818152ef2d7c331f70bd90d10a20c24fdd084a69. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BKSTS2300001.
      date published: 2026-07-03T10:47:44Z
    audio: Conte 1, 2, 3
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 138.035
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.749
      additional property: Energy
        type: PropertyValue
        value: 0.595
      additional property: Speechiness
        type: PropertyValue
        value: 0.046
      additional property: Acousticness
        type: PropertyValue
        value: 0.283
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.248
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: O Mensageiro (Dia das Mães)
album: O Mensageiro (O Arrogante)
album: O Mensageiro (Essa Tecnologia)
album: O Mensageiro (Recital para um Pai)
album: O Mensageiro (Filho)
album: O Mensageiro (Mundo de Gente)
album: Bipolaridade
album: O Que Penso de Você
album: Essa Aliança
album: Meio por Cento
album: Paracelso
album: Amor Bipolar
album: Mulher Maliciosa (Acústico)
album: Dono do Morro
album: Espelho Quebrado
album: Quadradinho

Valence (Positivity)
type: PropertyValue
value: 0.71

Loudness (dB)
type: PropertyValue
value: -6.329

Key Name
type: PropertyValue
value: C#

Mode Name
type: PropertyValue
value: Major

O Mensageiro (Dia das Mães)
type: MusicAlbum
date published: 2023-05-19
track: O Mensageiro (Dia das Mães)
  type: MusicRecording
  duration: PT1M1S
  duration ms: 61934
  explicit: false
  by artist: Sterfson Ferreira
  in album: O Mensageiro (Dia das Mães)
    type: MusicAlbum
    date published: 2023-05-19
  isrc code: BR5SS2300013
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-15T05:47:36+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x16a78b272228ee6fdb8d0b359e8ab1bd23a5c6a0295610a72d44432253a8fc55
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958111
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958111
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BR5SS2300013
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-15T06:58:20Z
  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 0x16a78b272228ee6fdb8d0b359e8ab1bd23a5c6a0295610a72d44432253a8fc55. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/BR5SS2300013.
    date published: 2026-07-15T06:58:20Z
  audio: O Mensageiro (Dia das Mães)
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 132.653
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 1
    additional property: Danceability
      type: PropertyValue
      value: 0.577
    additional property: Energy
      type: PropertyValue
      value: 0.417
    additional property: Speechiness
      type: PropertyValue
      value: 0.31
    additional property: Acousticness
      type: PropertyValue
      value: 0.813
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.095
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.73
    additional property: Loudness (dB)
      type: PropertyValue
      value: -10.097
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Major

O Mensageiro (O Arrogante)
type: MusicAlbum
date published: 2023-05-31
track: O Mensageiro (O Arrogante)
  type: MusicRecording
  duration: PT1M19S
  duration ms: 79714
  explicit: false
  by artist: Sterfson Ferreira
  in album: O Mensageiro (O Arrogante)
    type: MusicAlbum
    date published: 2023-05-31
  isrc code: BR5SS2300021
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-12T22:59:34+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xf3e238fac2209837e6701f2307ee657b270ee47aef1db637828ebbc19620ce13
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957771
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957771
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BR5SS2300021
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-12T23:27:28Z
  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 0xf3e238fac2209837e6701f2307ee657b270ee47aef1db637828ebbc19620ce13. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/BR5SS2300021.
    date published: 2026-07-12T23:27:28Z
  audio: O Mensageiro (O Arrogante)
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 91.929
    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: 0.672
    additional property: Energy
      type: PropertyValue
      value: 0.755
    additional property: Speechiness
      type: PropertyValue
      value: 0.634
    additional property: Acousticness
      type: PropertyValue
      value: 0.682
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.314
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.299
    additional property: Loudness (dB)
      type: PropertyValue
      value: -8.745
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Major

O Mensageiro (Essa Tecnologia)
type: MusicAlbum
date published: 2023-06-15
track: O Mensageiro (Essa Tecnologia)
  type: MusicRecording
  duration: PT1M51S
  duration ms: 111455
  explicit: false
  by artist: Sterfson Ferreira
  in album: O Mensageiro (Essa Tecnologia)
    type: MusicAlbum
    date published: 2023-06-15
  isrc code: BR5SS2300025
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-15T05:14:37+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x84969eb5c4cc5e14feae9d1e18f271a854fe5455e60d5587463876aade56dcd2
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958110
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958110
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BR5SS2300025
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-15T06:57:12Z
  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 0x84969eb5c4cc5e14feae9d1e18f271a854fe5455e60d5587463876aade56dcd2. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/BR5SS2300025.
    date published: 2026-07-15T06:57:12Z
  audio: O Mensageiro (Essa Tecnologia)
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 117.718
    additional property: Musical Key
      type: PropertyValue
      value: 9
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.617
    additional property: Energy
      type: PropertyValue
      value: 0.519
    additional property: Speechiness
      type: PropertyValue
      value: 0.467
    additional property: Acousticness
      type: PropertyValue
      value: 0.776
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.306
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.925
    additional property: Loudness (dB)
      type: PropertyValue
      value: -11.807
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Major

O Mensageiro (Recital para um Pai)
type: MusicAlbum
date published: 2023-06-27
track: O Mensageiro (Recital para um Pai)
  type: MusicRecording
  duration: PT1M15S
  duration ms: 75764
  explicit: false
  by artist: Sterfson Ferreira
  in album: O Mensageiro (Recital para um Pai)
    type: MusicAlbum
    date published: 2023-06-27
  isrc code: BR5SS2300026
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-03T20:45:02+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xa1cbfadd8baaee047220fec496e9761567fd883422aa9854a7bc1e14ee0a9660
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956639
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956639
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BR5SS2300026
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-04T11:19:20Z
  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 0xa1cbfadd8baaee047220fec496e9761567fd883422aa9854a7bc1e14ee0a9660. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BR5SS2300026.
    date published: 2026-07-04T11:19:20Z
  audio: O Mensageiro (Recital para um Pai)
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 95.377
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.693
    additional property: Energy
      type: PropertyValue
      value: 0.317
    additional property: Speechiness
      type: PropertyValue
      value: 0.423
    additional property: Acousticness
      type: PropertyValue
      value: 0.869
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.116
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.773
    additional property: Loudness (dB)
      type: PropertyValue
      value: -12.897
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Minor

O Mensageiro (Filho)
type: MusicAlbum
date published: 2023-07-04
track: O Mensageiro (Filho)
  type: MusicRecording
  duration: PT1M34S
  duration ms: 94088
  explicit: false
  by artist: Sterfson Ferreira
  in album: O Mensageiro (Filho)
    type: MusicAlbum
    date published: 2023-07-04
  isrc code: BR5SS2300030
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-04T01:36:05+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x9ae558f66d4eb3cdb548fcd9b13a72517b6355bf357d9c84b6e67b8b2c20b733
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956656
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956656
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BR5SS2300030
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-04T14:03:39Z
  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 0x9ae558f66d4eb3cdb548fcd9b13a72517b6355bf357d9c84b6e67b8b2c20b733. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BR5SS2300030.
    date published: 2026-07-04T14:03:39Z
  audio: O Mensageiro (Filho)
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 67.879
    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: 0.647
    additional property: Energy
      type: PropertyValue
      value: 0.322
    additional property: Speechiness
      type: PropertyValue
      value: 0.477
    additional property: Acousticness
      type: PropertyValue
      value: 0.73
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.433
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.558
    additional property: Loudness (dB)
      type: PropertyValue
      value: -15.11
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major

O Mensageiro (Dia das Mães)
type: MusicAlbum
date published: 2023-09-15

O Mensageiro (Mundo de Gente)
type: MusicAlbum
date published: 2023-09-29

Bipolaridade
type: MusicAlbum
date published: 2024-01-13
track: Bipolaridade
  type: MusicRecording
  duration: PT3M49S
  duration ms: 229449
  explicit: false
  by artist: Sterfson Ferreira
  in album: Bipolaridade
    type: MusicAlbum
    date published: 2024-01-13
  isrc code: BKSTS2300002
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-17T17:42:57+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x479a714404c9c3dd1e375c830a5241a62d8a0ba30b157d5af31367c72ad061c7
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958447
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958447
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKSTS2300002
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-17T19:47:19Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479a714404c9c3dd1e375c830a5241a62d8a0ba30b157d5af31367c72ad061c7. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKSTS2300002.
    date published: 2026-07-17T19:47:19Z
  audio: Bipolaridade
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 155.932
    additional property: Musical Key
      type: PropertyValue
      value: 8
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.61
    additional property: Energy
      type: PropertyValue
      value: 0.57
    additional property: Speechiness
      type: PropertyValue
      value: 0.076
    additional property: Acousticness
      type: PropertyValue
      value: 0.595
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.104
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.96
    additional property: Loudness (dB)
      type: PropertyValue
      value: -5.856
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Minor

O Que Penso de Você
type: MusicAlbum
date published: 2024-01-20

Essa Aliança
type: MusicAlbum
date published: 2024-08-22
track: Essa Aliança
  type: MusicRecording
  duration: PT3M15S
  duration ms: 195281
  explicit: false
  by artist: Sterfson Ferreira
  in album: Essa Aliança
    type: MusicAlbum
    date published: 2024-08-22
  isrc code: BKSTS2400001
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-03T04:03:04+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x758386d2ca000a1955cf17102511a0494f9075e8033ccd89bbd56ead0e19c23d
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956476
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956476
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKSTS2400001
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-03T09:04:44Z
  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 0x758386d2ca000a1955cf17102511a0494f9075e8033ccd89bbd56ead0e19c23d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BKSTS2400001.
    date published: 2026-07-03T09:04:44Z
  audio: Essa Aliança
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 167.966
    additional property: Musical Key
      type: PropertyValue
      value: 11
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.663
    additional property: Energy
      type: PropertyValue
      value: 0.512
    additional property: Speechiness
      type: PropertyValue
      value: 0.043
    additional property: Acousticness
      type: PropertyValue
      value: 0.393
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.056
    additional property: Liveness
      type: PropertyValue
      value: 0.134
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.679
    additional property: Loudness (dB)
      type: PropertyValue
      value: -8.524
    additional property: Key Name
      type: PropertyValue
      value: B
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Meio por Cento
type: MusicAlbum
date published: 2024-09-27
track: Meio por Cento
  type: MusicRecording
  duration: PT4M3S
  duration ms: 243607
  explicit: false
  by artist: Sterfson Ferreira
  in album: Meio por Cento
    type: MusicAlbum
    date published: 2024-09-27
  isrc code: BKSTS2400002
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T14:56:12+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc165af2424500ae8d2610df890cf935c7ff92c09abc9dd1edf4a840b968b5931
  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/BKSTS2400002
  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 0xc165af2424500ae8d2610df890cf935c7ff92c09abc9dd1edf4a840b968b5931. 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/BKSTS2400002.
    date published: 2026-07-05T19:27:56Z
  audio: Meio por Cento
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 152.124
    additional property: Musical Key
      type: PropertyValue
      value: 1
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.591
    additional property: Energy
      type: PropertyValue
      value: 0.487
    additional property: Speechiness
      type: PropertyValue
      value: 0.041
    additional property: Acousticness
      type: PropertyValue
      value: 0.721
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.117
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.581
    additional property: Loudness (dB)
      type: PropertyValue
      value: -7.711
    additional property: Key Name
      type: PropertyValue
      value: C#
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Paracelso
type: MusicAlbum
date published: 2024-11-20

Amor Bipolar
type: MusicAlbum
date published: 2025-02-14

Mulher Maliciosa (Acústico)
type: MusicAlbum
date published: 2025-03-07
track: Mulher Maliciosa - Acústico
  type: MusicRecording
  duration: PT2M58S
  duration ms: 178121
  explicit: false
  by artist: Sterfson Ferreira
  in album: Mulher Maliciosa (Acústico)
    type: MusicAlbum
    date published: 2025-03-07
  isrc code: BKSTS2500002
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-12T23:00:49+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x568429f462ae2c60a1fe2f4671a8e7cb6c4f0c1638980fb545e1373c788fd8ce
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957771
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957771
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BKSTS2500002
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-12T23:27:28Z
  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 0x568429f462ae2c60a1fe2f4671a8e7cb6c4f0c1638980fb545e1373c788fd8ce. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/BKSTS2500002.
    date published: 2026-07-12T23:27:28Z
  audio: Mulher Maliciosa - Acústico
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 139.946
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.587
    additional property: Energy
      type: PropertyValue
      value: 0.427
    additional property: Speechiness
      type: PropertyValue
      value: 0.029
    additional property: Acousticness
      type: PropertyValue
      value: 0.817
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.141
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.668
    additional property: Loudness (dB)
      type: PropertyValue
      value: -7.255
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Dono do Morro
type: MusicAlbum
date published: 2025-04-15

Espelho Quebrado
type: MusicAlbum
date published: 2025-06-12

Quadradinho
type: MusicAlbum
date published: 2025-07-04