Self Portrait

Recording by Lars Eric Mattsson.

Recording identifiers

ISRC
USCGH0578835
CopyrightID (CopyrightChains transaction hash)
0x29b990c175571a49498f17aab5c8b8ab32c3ca0f08193484424ac519cb381a6d
Copyright registration time
2026-07-30T18:49:48+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-30T19:11:09Z
Bitcoin block
960296
Canonical record hash
sha256:30e82dcb18abec4e796172d55121b52081b23552987404d9c86606a177f00ac5

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.