Spring Cantata, Op.20

Recording by Sergei Rachmaninoff.

Recording identifiers

ISRC
GBPCP1700435
CopyrightID (CopyrightChains transaction hash)
0x3fcb00bcb0457109c28b5a1b17630f2336e0f16efc09a784d64ae1f9a88c7a35
Copyright registration time
2026-06-26T07:33:16+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:a66370fba08784f87b66a4ea691e47e227f4dd64b7ec3226752aaa4e7acb66b6

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.