Chess
type: MusicGroup
description: Chess is a board game for two players, played on a square board consisting of 64 squares arranged in an 8×8 grid. The players, referred to as "White" and "Black", each control sixteen pieces: one king
popularity: 3
followers: 24
additional property: CopyrightID
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additional property: OTSTimestamp
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  value: 2026-06-21T20:46:40Z
additional property: OTSCanonicalRecord
additional property: OTSVerifyInstructions
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  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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87ec54d73909e55b1f1e0973b79f65707ed72668627dc0b88b533ee0d19b466. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fedd5b01-c83b-4d91-a50b-ea0d21a76575.json and https://artists.proofprofile.net/proofs/artist/fedd5b01-c83b-4d91-a50b-ea0d21a76575.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T20:46:40Z
album: The Oscar Album
  type: MusicAlbum
  date published: 2021-11-05
  track: I Know Him So Well
    type: MusicRecording
    duration: PT4M17S
    duration ms: 257906
    explicit: false
    by artist: Chess
    in album: The Oscar Album
      type: MusicAlbum
      date published: 2021-11-05
    isrc code: NL6MM2100038
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    additional property: OTSTimestamp
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    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
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9560cf3b61e25f092add428df8b281f1193161e8a6862b4088c823bd897808. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:02:05Z), 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/NL6MM2100038.
      date published: 2026-07-21T13:02:05Z
    audio: I Know Him So Well
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 137.88
      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: 0.526
      additional property: Energy
        type: PropertyValue
        value: 0.352
      additional property: Speechiness
        type: PropertyValue
        value: 0.028
      additional property: Acousticness
        type: PropertyValue
        value: 0.613
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.092
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.128
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.978
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: I Wonder Where You Are
  type: MusicAlbum
  date published: 2021-11-05
album: This Is Goodbye
  type: MusicAlbum
  date published: 2021-11-05