Piano Prayer
type: MusicGroup
genre: kundiman
popularity: 6
followers: 155
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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 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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02bf97b6ee9b447fcec40bcdb6265b47be9a8e3adea3568fab3ef6263c51683. Chain 2 (Bitcoin): anchored in block 953982 (2026-06-16T17:42:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2ca51761-4667-49a2-b8bb-ae2053b60706.json and https://artists.proofprofile.net/proofs/artist/2ca51761-4667-49a2-b8bb-ae2053b60706.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T17:42:23Z
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album: Piano Melodies for Study, Deep Focus & Concentration
  type: MusicAlbum
  date published: 2020-03-22
album: 10 Call To The Heavens
  type: MusicAlbum
  date published: 2020-10-16
album: 11 Call To The Heavens
  type: MusicAlbum
  date published: 2020-10-30
album: Soundscape - 25 Classical Piano Melodies
  type: MusicAlbum
  date published: 2022-01-14
album: 10 Choir Backing Music
  type: MusicAlbum
  date published: 2022-07-08
album: Mindful Living Music | Calm Sleep
  type: MusicAlbum
  date published: 2022-07-12
album: 50 Sleepy Piano Songs
  type: MusicAlbum
  date published: 2022-07-23
  track: Liszt Consolation No. 4 in D-Flat Major Quasi adagio
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    by artist: Piano Prayer
    in album: 50 Sleepy Piano Songs
      type: MusicAlbum
      date published: 2022-07-23
    genre: kundiman
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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 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
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9adbc63445ab49c7ba6ee7b644c13542c2f2350572851b912bc53c6cf413085. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UK6821713851.
      date published: 2026-07-08T03:20:19Z
    audio: Liszt Consolation No. 4 in D-Flat Major Quasi adagio
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      additional property: Loudness (dB)
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      additional property: Key Name
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        value: C#
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album: 50 Summer Piano Tracks
  type: MusicAlbum
  date published: 2022-07-24
album: Sounds of Pure Calm
  type: MusicAlbum
  date published: 2023-07-30
album: Melodies Along the Brooks: Nature's Piano Sonata
  type: MusicAlbum
  date published: 2024-01-15
album: Peaceful Background
  type: MusicAlbum
  date published: 2024-09-23
album: Velvet Echoes: Vocal Harmonies & Piano Journeys
  type: MusicAlbum
  date published: 2025-03-22