Guitar Concerto: II.

Recording by Erland von Koch.

Recording identifiers

ISRC
SEAGA9524020
CopyrightID (CopyrightChains transaction hash)
0xe5d72276a035999947863c56580542174f8c46dec15a2d7648164e4c51d9d79d
Copyright registration time
2026-01-28T22:31:56+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T12:47:07Z
Bitcoin block
953513
Canonical record hash
sha256:89a11b7b76b27debd214863715da99db294777240934b3ee537940621fef2185

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.