Sonntag

Recording by Johannes Brahms.

Recording identifiers

ISRC
FIT3H0700004
CopyrightID (CopyrightChains transaction hash)
0xc0c014ef051721c51d2a9cfe73d06ac4f368d56fec308400e0e87ab3c587409c
Copyright registration time
2026-07-30T21:10:47+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-30T21:35:24Z
Bitcoin block
960317
Canonical record hash
sha256:6bd322a4798b8c65fd8efd1b5517a2d852c986b3bf801c333bde04d0a88d326a

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.