March

Recording by Carl Philipp Emanuel Bach.

Recording identifiers

ISRC
GBF077800030
CopyrightID (CopyrightChains transaction hash)
0x057a41136f8f2a257566f272eb08ac1b5ca348ef59ddd72c59147983cfcf9cec
Copyright registration time
2026-07-07T10:00:38+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T08:56:20Z
Bitcoin block
957145
Canonical record hash
sha256:f6c6e622d3b19924db995e504f1f3cdbb4fd842e37f395d21ce4edbf36fb3215

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.