String Quartet No. 3 in F Major, Op. 73: IV. Adagio

Recording identifiers

ISRC

USB8U1521221

CopyrightID (CopyrightChains transaction hash)

0xd54eeeeef4c4d16a8e59db99701228c82f815bf09256bbcc77ed0696454b0963

Copyright registration time

2026-07-30T04:57:42+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T05:15:54Z

Bitcoin block

960209

Canonical record hash

sha256:86f5635ee134a5d15a502356129b4ca39504b48d85f3bd949daa4d3993ca026b

• Verify the CopyrightID on CopyrightChains
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What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. ISRC is the stable recording-level bridge from that source corpus to the authoritative cc-db-prod track record.

CopyrightChains and Bitcoin OpenTimestamps make the exact committed record independently verifiable today. The cryptographic proof does not by itself establish authorship or ownership of the underlying recording.

Read the complete pre-generative-AI provenance and verification method.