Symphony No. 3: IIc. A tempo. Wie im Anfang

Recording by Gustav Mahler.

Recording identifiers

ISRC
DEF058032809
CopyrightID (CopyrightChains transaction hash)
0xb9289bd7799d796d5fb104ca0d2ddbc26cab05a7a46d2353b1513bc1459d8a88
Copyright registration time
2026-07-06T23:00:31+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:850a7c3664228272695e47d4418c8fd8254cab7b7cfb795d5c7056ee376f6268

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.