Cello Concerto No. 1: II. Andante tranquillo

Recording by Grażyna Bacewicz.

Recording identifiers

ISRC
PLA161259103
CopyrightID (CopyrightChains transaction hash)
0xfdf3a8fc68ce4fb71b89d55300bd9847ad6d7e3d0341da82b45011e5519636c4
Copyright registration time
2026-07-07T16:56:02+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:22e1e516f3051ffada3122590f5d1c3bf2042b8e9313a82c3dcb1f0aa04cadb1

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.