Márcio Marinho
type: MusicGroup
genre: brazilian jazz
genre: samba
description: Márcio Carlos Marinho (born 12 December 1970) is a Brazilian politician. Although born in Rio de Janeiro, he has spent his political career representing Bahia, having served as state representative si
popularity: 6
followers: 908
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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 0xd4270d649a6221124793fb0dafe0b3f7f439474cc8a6b2c88e4e63cc768c0247. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d4a2225-7359-4401-90be-8f172a88d9f2.json and https://artists.proofprofile.net/proofs/artist/9d4a2225-7359-4401-90be-8f172a88d9f2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T06:31:18Z
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album: Alô Nelson
  type: MusicAlbum
  date published: 2021-05-21
  track: Juliana
    type: MusicRecording
    duration: PT3M49S
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    explicit: false
    by artist: Victor Angeleas
    by artist: Márcio Marinho
    by artist: Nelson Faria
    in album: Alô Nelson
      type: MusicAlbum
      date published: 2021-05-21
    popularity: 17
    isrc code: BCMCZ2100011
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    additional property: OTSTimestamp
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    additional property: OTSVerifyInstructions
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      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
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208154d4f3a1f1915e02e1bc22c69a816b95b99d3e03f87aee3f8139d6beeb34. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BCMCZ2100011.
      date published: 2026-07-02T11:34:59Z
    audio: Juliana
      type: AudioObject
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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)
        type: PropertyValue
        value: -14.817
      additional property: Key Name
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        value: D
      additional property: Mode Name
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        value: Minor
track: Juliana
  type: MusicRecording
  duration: PT3M49S
  duration ms: 229272
  explicit: false
  by artist: Victor Angeleas
  by artist: Márcio Marinho
  by artist: Nelson Faria
  by artist: Face Musical
  in album: Alô Nelson
    type: MusicAlbum
    date published: 2021-05-21
  isrc code: BCMCZ2100011
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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
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208154d4f3a1f1915e02e1bc22c69a816b95b99d3e03f87aee3f8139d6beeb34. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BCMCZ2100011.
    date published: 2026-07-07T18:50:38Z
  audio: Juliana
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
      type: PropertyValue
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    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
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      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.61
    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
      type: PropertyValue
      value: 0.042
    additional property: Acousticness
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    additional property: Instrumentalness
    additional property: Liveness
    additional property: Valence (Positivity)
    additional property: Loudness (dB)
    additional property: Key Name
    additional property: Mode Name

Instrumentalness
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value: 0.915

Liveness
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value: 0.118

Valence (Positivity)
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value: 0.615

Loudness (dB)
type: PropertyValue
value: -14.817

Key Name
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value: D

Mode Name
type: PropertyValue
value: Minor