O Troco
type: MusicGroup
genre: axé
genre: pagode baiano
popularity: 3
followers: 92
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x861da9971bff4adc36735f3a898c1a27b1bad5364d48a7ef5545cd2d42ebabf4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953885
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953885
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0c9b93f6-890a-40f2-af1b-77bfac629915.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0c9b93f6-890a-40f2-af1b-77bfac629915.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0c9b93f6-890a-40f2-af1b-77bfac629915
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T04:12:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x861da9971bff4adc36735f3a898c1a27b1bad5364d48a7ef5545cd2d42ebabf4","name":"O Troco","registered_at":"2026-06-15T17:46:13Z","symbol":"NIM0784205","token_address":"0x9ec28bb3249abb0cc5b1ef3fbbf6252eb2b23384","type":"artist","uuid":"0c9b93f6-890a-40f2-af1b-77bfac629915"}
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 0x861da9971bff4adc36735f3a898c1a27b1bad5364d48a7ef5545cd2d42ebabf4. Chain 2 (Bitcoin): anchored in block 953886 (2026-06-16T04:37:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0c9b93f6-890a-40f2-af1b-77bfac629915.json and https://artists.proofprofile.net/proofs/artist/0c9b93f6-890a-40f2-af1b-77bfac629915.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T04:37:45Z
  text: {"copyright_id":"0x861da9971bff4adc36735f3a898c1a27b1bad5364d48a7ef5545cd2d42ebabf4","name":"O Troco","registered_at":"2026-06-15T17:46:13Z","symbol":"NIM0784205","token_address":"0x9ec28bb3249abb0cc5b1ef3fbbf6252eb2b23384","type":"artist","uuid":"0c9b93f6-890a-40f2-af1b-77bfac629915"}
album: Todo Enfiado
  type: MusicAlbum
  date published: 2009-01-01
  track: Todo Enfiado
    type: MusicRecording
    duration: PT3M43S
    duration ms: 223346
    explicit: false
    by artist: O Troco
    in album: Todo Enfiado
      type: MusicAlbum
      date published: 2009-01-01
    genre: axé
    genre: pagode baiano
    isrc code: BREMI0900198
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T07:55:04+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x3b1f1fdc7b22e0ee6d01955d194213877264cffb582fed6bec6b79748da4450a
    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/BREMI0900198
    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 0x3b1f1fdc7b22e0ee6d01955d194213877264cffb582fed6bec6b79748da4450a. 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/BREMI0900198.
      date published: 2026-07-04T11:19:20Z
    audio: Todo Enfiado
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 151.647
      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: 0.635
      additional property: Energy
        type: PropertyValue
        value: 0.925
      additional property: Speechiness
        type: PropertyValue
        value: 0.041
      additional property: Acousticness
        type: PropertyValue
        value: 0.555
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.216
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.968
      additional property: Loudness (dB)
        type: PropertyValue
        value: -2.996
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Ela É Linda
  type: MusicAlbum
  date published: 2019-07-06