Chico Macedo
type: MusicGroup
genre: brazilian jazz
popularity: 3
followers: 149
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8c92521a5c0cb83411c6892bda744a8422be2dfa0345d99efed306d2ca4b2dfe
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/54b5904c-b1f5-4477-bc2a-cbe21737a6f7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/54b5904c-b1f5-4477-bc2a-cbe21737a6f7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/54b5904c-b1f5-4477-bc2a-cbe21737a6f7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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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 0x8c92521a5c0cb83411c6892bda744a8422be2dfa0345d99efed306d2ca4b2dfe. 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/54b5904c-b1f5-4477-bc2a-cbe21737a6f7.json and https://artists.proofprofile.net/proofs/artist/54b5904c-b1f5-4477-bc2a-cbe21737a6f7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x8c92521a5c0cb83411c6892bda744a8422be2dfa0345d99efed306d2ca4b2dfe","name":"Chico Macedo","registered_at":"2026-06-16T19:11:26Z","symbol":"NIM1148217","token_address":"0x3830c74cc5edf13f0ba638518de1b3afc680b28f","type":"artist","uuid":"54b5904c-b1f5-4477-bc2a-cbe21737a6f7"}
album: Live in Basel - Chico Macedo 4teto
  type: MusicAlbum
  date published: 2022-06-03
album: Chico Macedo 4teto
  type: MusicAlbum
  date published: 2020-09-11
  track: Sampa
album: Santa Morena
  type: MusicAlbum
  date published: 2024-11-01
album: Mingus Mingled
  type: MusicAlbum
  date published: 2024-04-05
album: Tempo Bom com Marta Karassawa Quintet
  type: MusicAlbum
  date published: 2024-03-08
  track: Cama de Gato
    type: MusicRecording
    duration: PT7M13S
    duration ms: 433893
    explicit: false
    by artist: Marta Karassawa
    by artist: Frank Herzberg
    by artist: Teco Cardoso
    by artist: Zé Eduardo Nazario
    by artist: Jacques Schwarz-Bart
    in album: Tempo Bom com Marta Karassawa Quintet
      type: MusicAlbum
      date published: 2024-03-08
    isrc code: BRFKH2300001
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
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      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc6c668116df492920028fdc26e13abd63e3630ec8a9ef8306126cfd1a076dcdf
    additional property: OTSHash
    additional property: OTSBitcoinBlock
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      value: 957124
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957124
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRFKH2300001
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-08T03:53:27Z
    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 0xc6c668116df492920028fdc26e13abd63e3630ec8a9ef8306126cfd1a076dcdf. 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/BRFKH2300001.
      date published: 2026-07-08T03:53:27Z
    audio: Cama de Gato
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 113.279
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.549
      additional property: Energy
        type: PropertyValue
        value: 0.388
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      additional property: Acousticness
        type: PropertyValue
        value: 0.875
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.022
      additional property: Liveness
        type: PropertyValue
        value: 0.144
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.627
      additional property: Loudness (dB)
        type: PropertyValue
        value: -16.101
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Bum
  type: MusicAlbum
  date published: 2024-06-26

Sampa
type: MusicRecording
duration: PT5M4S
duration ms: 304880
explicit: false
by artist: Chico Macedo
in album: Chico Macedo 4teto
  type: MusicAlbum
  date published: 2020-09-11
isrc code: BX68K2000006
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-22T14:31:38+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xef94e4653e88cc513b17b8224a728e3f8459baaf0b13b4ab7b66e488bcacfbb3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX68K2000006
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
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: 956304
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:55:08+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 0xef94e4653e88cc513b17b8224a728e3f8459baaf0b13b4ab7b66e488bcacfbb3. 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/BX68K2000006.
  date published: 2026-07-02T03:55:08Z
audio: Sampa
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 125.645
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.504
  additional property: Energy
    type: PropertyValue
    value: 0.381
  additional property: Speechiness
    type: PropertyValue
    value: 0.034
  additional property: Acousticness
    type: PropertyValue
    value: 0.837
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.954
  additional property: Liveness
    type: PropertyValue
    value: 0.116
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.22
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.893
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor