Cello Concerto in C Minor, Op. 21: II. Adagio -

Recording by Kurt Atterberg.

Recording identifiers

ISRC
SEAEP0604020
CopyrightID (CopyrightChains transaction hash)
0x4d9adad3281f4be411ac663f77fd67e6ab8e96d5744d757282a4ca36fc7d3b81
Copyright registration time
2026-06-21T22:30:15+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:30:09Z
Bitcoin block
956302
Canonical record hash
sha256:f9258aa39c0251f27de83a84d765cf4d745d2054f2550d27e99afad7ade5887d

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.