Leonard Rose
type: MusicGroup
description: Leonard Joseph Rose (July 27, 1918 – November 16, 1984) was an American cellist and pedagogue. Biography Rose was born in Washington, D.C. His parents were Jewish immigrants, his father from Bragin
popularity: 12
followers: 2
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-15T22:22:30Z
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track: The Swan (Arr. Leonard Rose)

The Swan (Arr. Leonard Rose)
type: MusicRecording
duration: PT2M43S
duration ms: 163093
explicit: false
by artist: Camille Saint-Saëns
by artist: Leonard Rose
by artist: David Berlin
by artist: Benjamin Martin
in album: French Cello Sonatas
  type: MusicAlbum
  date published: 2020-10-09
genre: classical
genre: late-romantic-era
genre: french-romanticism
isrc code: AUAB02050448
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  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
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a58b3cc473afe0dcba770026edfeb434257f7f92950f59a9bfbfa8760520ea. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/AUAB02050448.
  date published: 2026-06-13T17:25:41Z
audio: The Swan (Arr. Leonard Rose)
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