Canon a 2 per tonos

Recording by Johann Sebastian Bach.

Recording identifiers

ISRC
USA560675575
CopyrightID (CopyrightChains transaction hash)
0x48cf837fead5b6c99b71d27dc8e114cc3a0de0d538b4f75f73d838d5b8803076
Copyright registration time
2026-07-07T02:42:53+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:53:27Z
Bitcoin block
957124
Canonical record hash
sha256:1c8cd6e399bcaab5da65cd3aa4cf8cdf4865916f9f413b9d3b6c52e7848858f2

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.