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description: Richard Friedman may refer to: Richard Friedman (filmmaker), American filmmaker Richard L. Friedman (born 1940), businessman and real estate developer Richard C. Friedman (1941–2020) medical doctor wh
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followers: 136
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album: Cinematic Piano
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-06-13T12:47:07Z
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    date published: 2000-01-01
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  subject of: OpenTimestamps Proof of Existence
  audio: Les noces de Jeanette: Air du rossignol (Arr. Pierre for Flute & Orchestra)

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OTSVerifyInstructions
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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 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

OpenTimestamps Proof of Existence
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encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262c4a89a4020e40ecf2ee2d2c1786db298ffd50a1955fbfc08722668277e33b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEF059304180.
date published: 2026-06-13T13:32:09Z

Les noces de Jeanette: Air du rossignol (Arr. Pierre for Flute & Orchestra)
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