Wieder mal eine Aufgabe

Recording by Carl Philipp Emanuel Bach.

Recording identifiers

ISRC
DEF058530818
CopyrightID (CopyrightChains transaction hash)
0x7b3cb868a3836df082299513fa282104d18739d6c2067f988a62779bbf92b046
Copyright registration time
2026-07-07T17:20:03+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:c631e54d76679358ad6c48799a65499fea1593c658c0ff5f19924e315f5ccf27

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.