Cello Concerto No. 2 in C minor, Op. 77

Recording identifiers

ISRC

USX761011604

CopyrightID (CopyrightChains transaction hash)

0x0f39fa9e580fa4a5b097a6e4b226d7cb3ebdaf750b057d119217b3fa500023cb

Copyright registration time

2026-07-30T07:55:33+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T08:04:30Z

Bitcoin block

960225

Canonical record hash

sha256:6bb43e84d2ddd718b7202bbd17d8a93a8d44aa0ba4e01ac9787ad67b823d3b00

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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.