Symphony No. 3: Ib. Langsam. Schwer

Recording by Gustav Mahler.

Recording identifiers

ISRC
DEF058032802
CopyrightID (CopyrightChains transaction hash)
0xf3074409d3f687437c7462fa5cd4472c0cf98be0c9cbf11473fc06c676a4ead5
Copyright registration time
2026-07-06T19:10:08+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:960655e512d408930ee195c793d5f7387bf48b3b57ae8490cf250f530afc83c3

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.