Doppelhorn

Recording by Lorenz Büffel.

Recording identifiers

ISRC
DEHM81900964
CopyrightID (CopyrightChains transaction hash)
0x0f1db2123c6a0d53c2af365a7e24feab1b9abfe5c39e4087c4a2afc7ed37d90c
Copyright registration time
2026-06-04T07:42:35+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-07T12:58:18Z
Bitcoin block
957039
Canonical record hash
sha256:2c99f73efe1cb0ff443f444eee1b262423ac20d7afba0dbd565d9509835922cd

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.