Antonio Costa
type: MusicGroup
genre: forró
genre: forro tradicional
description: REDIRECT António Costa
popularity: 3
followers: 51
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc4ec0dbcd251d7e9268936dcc4b13782b687de137eead39432d1019cf69f48ec
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/6c68bfa0-6773-4823-a2e7-dbae6f1e4415.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6c68bfa0-6773-4823-a2e7-dbae6f1e4415.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6c68bfa0-6773-4823-a2e7-dbae6f1e4415
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc4ec0dbcd251d7e9268936dcc4b13782b687de137eead39432d1019cf69f48ec","name":"Antonio Costa","registered_at":"2026-06-17T03:25:19Z","symbol":"NIM1266049","token_address":"0x7e283f23d73060bcd6ace65ec007ab21afae22d7","type":"artist","uuid":"6c68bfa0-6773-4823-a2e7-dbae6f1e4415"}
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 0xc4ec0dbcd251d7e9268936dcc4b13782b687de137eead39432d1019cf69f48ec. 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/6c68bfa0-6773-4823-a2e7-dbae6f1e4415.json and https://artists.proofprofile.net/proofs/artist/6c68bfa0-6773-4823-a2e7-dbae6f1e4415.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xc4ec0dbcd251d7e9268936dcc4b13782b687de137eead39432d1019cf69f48ec","name":"Antonio Costa","registered_at":"2026-06-17T03:25:19Z","symbol":"NIM1266049","token_address":"0x7e283f23d73060bcd6ace65ec007ab21afae22d7","type":"artist","uuid":"6c68bfa0-6773-4823-a2e7-dbae6f1e4415"}
album: Antonio Costa
  type: MusicAlbum
  date published: 1905-07-02
album: Saudades do Rei
  type: MusicAlbum
  date published: 1905-07-02
  track: Saudade de Maceió
    type: MusicRecording
    duration: PT2M56S
    duration ms: 176946
    explicit: false
    by artist: Antonio Costa
    in album: Saudades do Rei
      type: MusicAlbum
      date published: 1905-07-02
    genre: forró
    genre: forro tradicional
    isrc code: FR10S2032486
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T04:07:50+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x55770f539445c05f3e3b1f6b0c111fb11e144db3d449e7d5b4f4097db4d6f116
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958362
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958362
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR10S2032486
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T04:32:48Z
    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 0x55770f539445c05f3e3b1f6b0c111fb11e144db3d449e7d5b4f4097db4d6f116. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/FR10S2032486.
      date published: 2026-07-17T04:32:48Z
    audio: Saudade de Maceió
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 80.043
      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: 0.65
      additional property: Energy
        type: PropertyValue
        value: 0.682
      additional property: Speechiness
        type: PropertyValue
        value: 0.032
      additional property: Acousticness
        type: PropertyValue
        value: 0.18
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.285
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.961
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.903
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Senti Senti
  type: MusicAlbum
  date published: 2009-02-02
album: Saudades do Rei
  type: MusicAlbum
  date published: 2010
album: Centenário do Gonzagão
  type: MusicAlbum
  date published: 2013-01-16
album: Aquarela do São Francisco
  type: MusicAlbum
  date published: 2017-12-11
album: Triângulo Amoroso
  type: MusicAlbum
  date published: 2018-01-01
album: Virus
  type: MusicAlbum
  date published: 2020-06-12
album: As Serestas Que Eu Fiz
  type: MusicAlbum
  date published: 2024-04-30
album: O Advogado do Forró As 20 Melhores
  type: MusicAlbum
  date published: 2025-09-10
  track: Saudade de Maceio
    type: MusicRecording
    duration: PT2M57S
    duration ms: 177226
    explicit: false
    by artist: Antonio Costa
    in album: O Advogado do Forró As 20 Melhores
      type: MusicAlbum
      date published: 2025-09-10
    genre: forró
    genre: forro tradicional
    isrc code: BRA222501121
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T11:22:52+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x22c26eae45e3364ef9245ce22a4b36d9186bfaac14c38f606776b4341b787043
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956822
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956822
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRA222501121
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T18:48:28Z
    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 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 0x22c26eae45e3364ef9245ce22a4b36d9186bfaac14c38f606776b4341b787043. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BRA222501121.
      date published: 2026-07-05T18:48:28Z
    audio: Saudade de Maceio
      type: AudioObject
      additional property: Tempo (BPM)
      additional property: Musical Key
      additional property: Mode (Major/Minor)
      additional property: Time Signature
      additional property: Danceability
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Tempo (BPM)
type: PropertyValue
value: 79.999

Musical Key
type: PropertyValue
value: 9

Mode (Major/Minor)
type: PropertyValue
value: 1

Time Signature
type: PropertyValue
value: 4

Danceability
type: PropertyValue
value: 0.649

Energy
type: PropertyValue
value: 0.686

Speechiness
type: PropertyValue
value: 0.031

Acousticness
type: PropertyValue
value: 0.189

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.258

Valence (Positivity)
type: PropertyValue
value: 0.963

Loudness (dB)
type: PropertyValue
value: -5

Key Name
type: PropertyValue
value: A

Mode Name
type: PropertyValue
value: Major