Chamber Music for Strings, Op. 21: I. Andantino

Recording by Viktor Kalabis.

Recording identifiers

ISRC
GBAJY2547405
CopyrightID (CopyrightChains transaction hash)
0x4f2d8ba91eb4f97cefd7582f929b81e592439560291b3f0376867b9baf22569b
Copyright registration time
2026-07-07T07:33:49+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:9974aed7ef1081d576e4728e1752a6a6552d16d1f557afc959df16c27b8aa9db

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.