Sara Martins
type: MusicGroup
description: Sara Martins (born 19 August 1977) is a Portuguese-French actress. She is known in France for her roles on television and in film and theatre. She also appeared as Detective Sergeant Camille Bordey in
popularity: 3
followers: 950
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x31f8088074c76023503c55802de80e07724ba3a024cfbc7b9165832fe56fd894
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
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additional property: OTSRecordURL
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  value: https://artists.proofprofile.net/proofs/artist/edd82455-13b2-41aa-81c6-ad25b68d4c43.json
additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x31f8088074c76023503c55802de80e07724ba3a024cfbc7b9165832fe56fd894","name":"Sara Martins","registered_at":"2026-06-21T11:44:11Z","symbol":"NIM1915034","token_address":"0xc1a196b23716fb402909676e694931b56b2dcd7d","type":"artist","uuid":"edd82455-13b2-41aa-81c6-ad25b68d4c43"}
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 0x31f8088074c76023503c55802de80e07724ba3a024cfbc7b9165832fe56fd894. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/edd82455-13b2-41aa-81c6-ad25b68d4c43.json and https://artists.proofprofile.net/proofs/artist/edd82455-13b2-41aa-81c6-ad25b68d4c43.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0x31f8088074c76023503c55802de80e07724ba3a024cfbc7b9165832fe56fd894","name":"Sara Martins","registered_at":"2026-06-21T11:44:11Z","symbol":"NIM1915034","token_address":"0xc1a196b23716fb402909676e694931b56b2dcd7d","type":"artist","uuid":"edd82455-13b2-41aa-81c6-ad25b68d4c43"}
album: Honra ao Mérito
  type: MusicAlbum
  date published: 2018-09-25
album: Sobrevivente
  type: MusicAlbum
  date published: 2020-08-05
  track: Sobrevivente
    type: MusicRecording
    duration: PT3M0S
    duration ms: 180501
    explicit: false
    by artist: Sara Martins
    in album: Sobrevivente
      type: MusicAlbum
      date published: 2020-08-05
    isrc code: QZHZ62061821
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    additional property: OTSBitcoinBlockVerifyURL
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    additional property: OTSVerificationAPI
      type: PropertyValue
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    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:12:41Z
    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 0xd819772a936044b30cf4a775e1fe0a19f1ef835a66cb9904d0d1dca159f363a2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZHZ62061821.
      date published: 2026-07-05T01:12:41Z
    audio: Sobrevivente
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 143.952
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.468
      additional property: Energy
        type: PropertyValue
        value: 0.639
      additional property: Speechiness
        type: PropertyValue
        value: 0.041
      additional property: Acousticness
        type: PropertyValue
        value: 0.076
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.119
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.319
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.736
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Vitória no Vale
  type: MusicAlbum
  date published: 2021-03-01