Mary Black
type: MusicGroup
description: Mary Black (born 23 May 1955)Sunday Tribune, 30 October 2005, quoted at "Mary Black's official home page". is an Irish folk singer. She is well known as an interpreter of both traditional folk and mod
popularity: 3
followers: 64
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe1975860e3c5c2955c153aabfa6745128393150c6418f45d04b327521f172487
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/7581c2b4-8937-4cd3-8a27-120827d76560.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7581c2b4-8937-4cd3-8a27-120827d76560.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7581c2b4-8937-4cd3-8a27-120827d76560
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe1975860e3c5c2955c153aabfa6745128393150c6418f45d04b327521f172487","name":"Mary Black","registered_at":"2026-06-17T06:39:52Z","symbol":"NIM1312492","token_address":"0x2d00505e342d69cccb6be995b87cd5a6c0e7c379","type":"artist","uuid":"7581c2b4-8937-4cd3-8a27-120827d76560"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1975860e3c5c2955c153aabfa6745128393150c6418f45d04b327521f172487. 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/7581c2b4-8937-4cd3-8a27-120827d76560.json and https://artists.proofprofile.net/proofs/artist/7581c2b4-8937-4cd3-8a27-120827d76560.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xe1975860e3c5c2955c153aabfa6745128393150c6418f45d04b327521f172487","name":"Mary Black","registered_at":"2026-06-17T06:39:52Z","symbol":"NIM1312492","token_address":"0x2d00505e342d69cccb6be995b87cd5a6c0e7c379","type":"artist","uuid":"7581c2b4-8937-4cd3-8a27-120827d76560"}
album: Armageddon
  type: MusicAlbum
  date published: 2025-09-19
  track: Armageddon
    type: MusicRecording
    duration: PT3M26S
    duration ms: 206781
    explicit: false
    by artist: Mary Black
    in album: Armageddon
      type: MusicAlbum
      date published: 2025-09-19
    isrc code: QT3EY2530242
    additional property: CopyrightID
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    additional property: OTSBitcoinBlockVerifyURL
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3EY2530242
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T01:04:02Z
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf40be5c56933461c15bb158032cccad4cf6f67781919f3573f2e47b1df04ca3. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QT3EY2530242.
      date published: 2026-07-20T01:04:02Z
    audio: Armageddon
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 135.973
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
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      additional property: Danceability
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      additional property: Energy
        type: PropertyValue
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      additional property: Speechiness
        type: PropertyValue
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      additional property: Acousticness
        type: PropertyValue
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      additional property: Instrumentalness
        type: PropertyValue
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      additional property: Liveness
        type: PropertyValue
        value: 0.114
      additional property: Valence (Positivity)
        type: PropertyValue
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      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.689
      additional property: Key Name
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        value: B
      additional property: Mode Name
        type: PropertyValue
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