Alfredo Marceneiro
type: MusicGroup
genre: fado
genre: opera
description: Alfredo Rodrigo Duarte (25 February 1891 – 26 June 1982), better known as Alfredo Marceneiro, was a Portuguese fado singer. His stage name is derived from his original profession as a joiner (marcene
popularity: 23
followers: 8419
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSProofURL
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9a52a570fe432ba03f8aa5de5ce5e6007e922ab5b827af7aedf8f38cc31096. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d95341e7-3782-4bf8-80f4-251ca6f78bd6.json and https://artists.proofprofile.net/proofs/artist/d95341e7-3782-4bf8-80f4-251ca6f78bd6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
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album: Ser Fadista
  type: MusicAlbum
  date published: 1964-06-26
album: Ser Fadista
  type: MusicAlbum
  date published: 1964-06-26
album: Há festa na Mouraria
  type: MusicAlbum
  date published: 1965
album: Há festa na Mouraria
  type: MusicAlbum
  date published: 1965
album: Há festa na Mouraria
  type: MusicAlbum
  date published: 1965
album: Quadras Soltas
  type: MusicAlbum
  date published: 1991
  track: O Pagem
    type: MusicRecording
    duration: PT2M47S
    duration ms: 167800
    explicit: false
    by artist: Alfredo Marceneiro
    in album: Quadras Soltas
      type: MusicAlbum
      date published: 1991
    genre: fado
    genre: opera
    isrc code: PTOV19100078
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    additional property: OTSVerificationAPI
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    additional property: OTSTimestamp
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      value: 2026-07-22T07:23:03Z
    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
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe5a790201b6f96e3b541aac15d83a29c614e63e1c3e551f2e727f7ee9d7753. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:23:03Z), 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/PTOV19100078.
      date published: 2026-07-22T07:23:03Z
    audio: O Pagem
      type: AudioObject
      additional property: Tempo (BPM)
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      additional property: Time Signature
        type: PropertyValue
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      additional property: Danceability
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      additional property: Energy
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      additional property: Speechiness
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      additional property: Acousticness
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      additional property: Instrumentalness
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      additional property: Liveness
        type: PropertyValue
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      additional property: Valence (Positivity)
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      additional property: Loudness (dB)
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      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Recordar Marceneiro
  type: MusicAlbum
  date published: 1995
  track: Bairros de Lisboa
    type: MusicRecording
    duration: PT3M3S
    duration ms: 183902
    explicit: false
    by artist: Alfredo Marceneiro
    in album: Recordar Marceneiro
      type: MusicAlbum
      date published: 1995
    genre: fado
    genre: opera
    isrc code: PTOV19500005
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    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
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      date published: 2026-07-14T19:14:42Z
    audio: Bairros de Lisboa
      type: AudioObject
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      additional property: Danceability
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      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Fado Portugal's Blues
album: The Fabulous Marceneiro / O Fabuloso Marceneiro
album: The fabulous Marceneiro/O fabuloso Marceneiro (Edição remasterizada e aumentada)
album: The fabulous Marceneiro/O fabuloso Marceneiro
album: The Fabulous Marceneiro / O Fabuloso Marceneiro (Remastered)
album: Alfredo Marceneiro
album: Alfredo Marceneiro (O Amor É Água Que Corre)
album: A Casa de Mariquinhas
album: Lembro-Me de Ti
album: O Bêbado Pintor
album: Alfredo Marceneiro - Essencial
album: Estrelas da Música Portuguesa
album: Artista De Variedades
album: O Fado De Alfredo
album: Eu Lembro - O Som do Fado
track: O Marceneiro

Senhora do Monte
type: MusicRecording
duration: PT2M54S
duration ms: 174026
explicit: false
by artist: Alfredo Marceneiro
in album: The fabulous Marceneiro/O fabuloso Marceneiro
  type: MusicAlbum
  date published: 2011-12-19
genre: fado
genre: opera
isrc code: PTVC11100035
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa454623683b8fea1420af018568e16283e5e1d5f8fc7c83df41e4413d3700f9e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PTVC11100035.
  date published: 2026-07-02T03:30:09Z
audio: Senhora do Monte
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.246
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor

O amor é água que corre
type: MusicRecording
duration: PT5M4S
duration ms: 304533
explicit: false
by artist: Alfredo Marceneiro
in album: The fabulous Marceneiro/O fabuloso Marceneiro
  type: MusicAlbum
  date published: 2011-12-19
genre: fado
genre: opera
isrc code: PTVC11100037
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-18T08:17:14+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09+00:00
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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
  type: PropertyValue
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7feb3268d2a55a2c6cf06878e59bba6274d5da13bed2bf867d4cbfe420a2fa80. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PTVC11100037.
  date published: 2026-07-02T03:55:08Z
audio: O amor é água que corre
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Danceability
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  additional property: Acousticness
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  additional property: Valence (Positivity)
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    type: PropertyValue
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  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
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A viela
type: MusicRecording
duration: PT3M33S
duration ms: 213746
explicit: false
by artist: Alfredo Marceneiro
in album: The fabulous Marceneiro/O fabuloso Marceneiro
  type: MusicAlbum
  date published: 2011-12-19
genre: fado
genre: opera
isrc code: PTVC11100039
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956302
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:30:09+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479c850b84414437b907b72c769005f58638586c9f40e105af0ad7d246986032. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PTVC11100039.
  date published: 2026-07-02T03:30:09Z
audio: A viela
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    type: PropertyValue
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    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
    value: 0.946
  additional property: Instrumentalness
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
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    type: PropertyValue
    value: -13.541
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Amor de mãe
type: MusicRecording
duration: PT4M3S
duration ms: 243413
explicit: false
by artist: Alfredo Marceneiro
in album: The fabulous Marceneiro/O fabuloso Marceneiro
  type: MusicAlbum
  date published: 2011-12-19
genre: fado
genre: opera
isrc code: PTVC11100042
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSHash
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41+00:00
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
additional property: ProofProfileEvidenceStatus
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  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
  type: PropertyValue
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:39:04Z
audio: Amor de mãe
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  additional property: Valence (Positivity)
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O bêbado pintor
type: MusicRecording
duration: PT4M7S
duration ms: 247840
explicit: false
by artist: Alfredo Marceneiro
in album: The fabulous Marceneiro/O fabuloso Marceneiro
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  date published: 2011-12-19
genre: fado
genre: opera
isrc code: PTVC11100045
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PTVC11100045
additional property: OTSTimestamp
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  value: 2026-07-08T08:56:20Z
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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62d5a5edbf433abf7b70bc15f0c83c892c688588037f1a6c1304e7f0fb3d397. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PTVC11100045.
  date published: 2026-07-08T08:56:20Z
audio: O bêbado pintor
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O leilão
type: MusicRecording
duration: PT3M58S
duration ms: 238520
explicit: false
by artist: Alfredo Marceneiro
in album: The fabulous Marceneiro/O fabuloso Marceneiro
  type: MusicAlbum
  date published: 2011-12-19
genre: fado
genre: opera
isrc code: PTVC11100046
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PTVC11100046
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
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additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
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additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5126f28a9090f7ec7068b5424d15ecaca7c449de2d92ce1d8c71c9ce793dce5d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PTVC11100046.
  date published: 2026-07-08T03:53:27Z
audio: O leilão
  type: AudioObject
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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Antes e depois
type: MusicRecording
duration: PT5M16S
duration ms: 316866
explicit: false
by artist: Alfredo Marceneiro
in album: The fabulous Marceneiro/O fabuloso Marceneiro
  type: MusicAlbum
  date published: 2011-12-19
genre: fado
genre: opera
isrc code: PTVC11100049
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
  type: PropertyValue
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7483bc87fb357202040d0508bae790aa1ed3f1d0c9a0d1d30f13acc40eb64c3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PTVC11100049.
  date published: 2026-07-02T03:30:09Z
audio: Antes e depois
  type: AudioObject
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  additional property: Key Name
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O Marceneiro
type: MusicRecording
duration: PT2M40S
duration ms: 160660
explicit: false
by artist: Alfredo Marceneiro
in album: O Melhor do Fado
  type: MusicAlbum
  date published: 2012-07-10
popularity: 15
isrc code: PTVC16400037
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PTVC16400037
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08+00:00
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
  type: PropertyValue
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff19294ca45234284de7bb15957bb82da1b3117601d7afdec406fe5d3c1835ca. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PTVC16400037.
  date published: 2026-07-02T05:09:12Z
audio: O Marceneiro
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
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Time Signature
type: PropertyValue
value: 4

Danceability
type: PropertyValue
value: 0.46

Energy
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Speechiness
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value: 0.038

Acousticness
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Instrumentalness
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Liveness
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value: 0.069

Valence (Positivity)
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value: 0.687

Loudness (dB)
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Key Name
type: PropertyValue
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Mode Name
type: PropertyValue
value: Major

Fado Portugal's Blues
type: MusicAlbum
date published: 2006-07-24

Fado Portugal's Blues
type: MusicAlbum
date published: 2006-07-24

The Fabulous Marceneiro / O Fabuloso Marceneiro
type: MusicAlbum
date published: 2011-01-01

The fabulous Marceneiro/O fabuloso Marceneiro (Edição remasterizada e aumentada)
type: MusicAlbum
date published: 2011-12-19

The fabulous Marceneiro/O fabuloso Marceneiro
type: MusicAlbum
date published: 2011-12-19
track: Senhora do Monte
track: O amor é água que corre
track: A viela
track: Amor de mãe
track: O bêbado pintor
track: O leilão
track: Antes e depois

The Fabulous Marceneiro / O Fabuloso Marceneiro (Remastered)
type: MusicAlbum
date published: 2011-12-19

The fabulous Marceneiro/O fabuloso Marceneiro
type: MusicAlbum
date published: 2011-12-19

Alfredo Marceneiro
type: MusicAlbum
date published: 2012
track: A Casa da Mariquinhas
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  duration: PT4M4S
  duration ms: 244883
  explicit: false
  by artist: Alfredo Marceneiro
  in album: Alfredo Marceneiro
    type: MusicAlbum
    date published: 2012
  genre: fado
  genre: opera
  isrc code: PTCN11200020
  additional property: CopyrightID
  additional property: CopyrightStatus
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PTCN11200020
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-03T01:01:38Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dd4b82bda430166b2a5d12902a9c9bb4c45c9d39470e5c24a573565cc7b06f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PTCN11200020.
    date published: 2026-07-03T01:01:38Z
  audio: A Casa da Mariquinhas
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    additional property: Mode (Major/Minor)
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    additional property: Danceability
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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Alfredo Marceneiro
type: MusicAlbum
date published: 2012-01-01

Alfredo Marceneiro (O Amor É Água Que Corre)
type: MusicAlbum
date published: 2014-03-04

A Casa de Mariquinhas
type: MusicAlbum
date published: 2014-03-04

Lembro-Me de Ti
type: MusicAlbum
date published: 2014-03-05

O Bêbado Pintor
type: MusicAlbum
date published: 2014-03-05

Alfredo Marceneiro
type: MusicAlbum
date published: 2014-10-22

Alfredo Marceneiro
type: MusicAlbum
date published: 2014-10-22

Alfredo Marceneiro - Essencial
type: MusicAlbum
date published: 2014-10-22
track: Amor de mãe
  type: MusicRecording
  duration: PT4M2S
  duration ms: 242893
  explicit: false
  by artist: Alfredo Marceneiro
  in album: Alfredo Marceneiro - Essencial
    type: MusicAlbum
    date published: 2014-10-22
  genre: fado
  genre: opera
  isrc code: PTVC16100010
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  additional property: CopyrightStatus
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSBitcoinBlockVerifyURL
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  additional property: OTSVerificationAPI
    type: PropertyValue
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  additional property: OTSTimestamp
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  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 0xb16504a6ad61791dcd485a81206495c4292af33bd2ca8c67625441b0b0271949. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PTVC16100010.
    date published: 2026-07-05T01:12:41Z
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