SAD BUT TRUE
type: MusicGroup
description: "Sad but True" is a song by American heavy metal band Metallica. It was released in February 1993 as the fifth and final single from their 1991 self-titled album. The music video for the single was re
popularity: 4
followers: 338
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc3af2a4717a8f75a52a45ff3a8c5b9ed10673726fca34feb0b139c6af53dc1a1
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5203ae5b-e31c-4ad5-a263-4db4f45a83e7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5203ae5b-e31c-4ad5-a263-4db4f45a83e7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5203ae5b-e31c-4ad5-a263-4db4f45a83e7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc3af2a4717a8f75a52a45ff3a8c5b9ed10673726fca34feb0b139c6af53dc1a1","name":"SAD BUT TRUE","registered_at":"2026-06-16T18:18:37Z","symbol":"NIM1135605","token_address":"0x713d8fae5ad639e0cc7115cf525b25439b415b06","type":"artist","uuid":"5203ae5b-e31c-4ad5-a263-4db4f45a83e7"}
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 0xc3af2a4717a8f75a52a45ff3a8c5b9ed10673726fca34feb0b139c6af53dc1a1. 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/5203ae5b-e31c-4ad5-a263-4db4f45a83e7.json and https://artists.proofprofile.net/proofs/artist/5203ae5b-e31c-4ad5-a263-4db4f45a83e7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xc3af2a4717a8f75a52a45ff3a8c5b9ed10673726fca34feb0b139c6af53dc1a1","name":"SAD BUT TRUE","registered_at":"2026-06-16T18:18:37Z","symbol":"NIM1135605","token_address":"0x713d8fae5ad639e0cc7115cf525b25439b415b06","type":"artist","uuid":"5203ae5b-e31c-4ad5-a263-4db4f45a83e7"}
album: Elusif
  type: MusicAlbum
  date published: 2021-06-04
album: Selfish
  type: MusicAlbum
  date published: 2021-12-03
album: Thrown
  type: MusicAlbum
  date published: 2022-09-09
  track: Thrown
    type: MusicRecording
    duration: PT3M40S
    duration ms: 220518
    explicit: true
    by artist: SAD BUT TRUE
    in album: Thrown
      type: MusicAlbum
      date published: 2022-09-09
    isrc code: FRX452273247
    additional property: CopyrightID
    additional property: CopyrightStatus
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    additional property: OTSBitcoinBlockVerifyURL
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      value: https://blockstream.info/api/block-height/956551
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452273247
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T21:18:05Z
    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 0x5a92e88c8d0f875ef7651694a31b3ff7ac726c42fccec8d1bc851a5146bfa880. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRX452273247.
      date published: 2026-07-03T21:18:05Z
    audio: Thrown
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 100.485
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.53
      additional property: Energy
        type: PropertyValue
        value: 0.884
      additional property: Speechiness
        type: PropertyValue
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      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.169
      additional property: Liveness
        type: PropertyValue
        value: 0.05
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.547
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.075
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Øksidasi
  type: MusicAlbum
  date published: 2023-05-31
album: Noir
  type: MusicAlbum
  date published: 2024-07-24