De Marcio
type: MusicGroup
genre: axé
popularity: 6
followers: 133
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7f2001fa0c2760271e671e37ca7c67da78109cdaa54d8d4dbf8de2883b3929d0
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/6a5c4a8d-941a-4976-84c9-627e636745ba.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6a5c4a8d-941a-4976-84c9-627e636745ba.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6a5c4a8d-941a-4976-84c9-627e636745ba
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7f2001fa0c2760271e671e37ca7c67da78109cdaa54d8d4dbf8de2883b3929d0","name":"De Marcio","registered_at":"2026-06-17T02:43:28Z","symbol":"NIM1256061","token_address":"0xb2510cc003192d06265caa3ae6be3553752d84af","type":"artist","uuid":"6a5c4a8d-941a-4976-84c9-627e636745ba"}
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 0x7f2001fa0c2760271e671e37ca7c67da78109cdaa54d8d4dbf8de2883b3929d0. 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/6a5c4a8d-941a-4976-84c9-627e636745ba.json and https://artists.proofprofile.net/proofs/artist/6a5c4a8d-941a-4976-84c9-627e636745ba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x7f2001fa0c2760271e671e37ca7c67da78109cdaa54d8d4dbf8de2883b3929d0","name":"De Marcio","registered_at":"2026-06-17T02:43:28Z","symbol":"NIM1256061","token_address":"0xb2510cc003192d06265caa3ae6be3553752d84af","type":"artist","uuid":"6a5c4a8d-941a-4976-84c9-627e636745ba"}
album: Amores Reais
  type: MusicAlbum
  date published: 2019-11-05
album: Cuidados
  type: MusicAlbum
  date published: 2020-12-01
album: Raça Humana de Valor
  type: MusicAlbum
  date published: 2021-02-05
album: Pra Curar Toda Dor
  type: MusicAlbum
  date published: 2022-02-02
  track: Pra Curar Toda Dor
    type: MusicRecording
    duration: PT3M46S
    duration ms: 226789
    explicit: false
    by artist: De Marcio
    in album: Pra Curar Toda Dor
      type: MusicAlbum
      date published: 2022-02-02
    genre: axé
    isrc code: BXBX12100002
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T01:28:52+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb06a8d1d7ef0404e3377004f0d80bc9cc08ec985652188b5febe1edffb20d0a2
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956474
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956474
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXBX12100002
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T08:56:35Z
    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 0xb06a8d1d7ef0404e3377004f0d80bc9cc08ec985652188b5febe1edffb20d0a2. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BXBX12100002.
      date published: 2026-07-03T08:56:35Z
    audio: Pra Curar Toda Dor
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 136.989
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.834
      additional property: Energy
        type: PropertyValue
        value: 0.486
      additional property: Speechiness
        type: PropertyValue
        value: 0.056
      additional property: Acousticness
        type: PropertyValue
        value: 0.28
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.153
      additional property: Liveness
        type: PropertyValue
        value: 0.351
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.817
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.483
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Filha da Sereia
  type: MusicAlbum
  date published: 2022-09-15
album: Família de Pescador
  type: MusicAlbum
  date published: 2023-04-28