Also sprach Zarathustra, Op. 30: V. Das Grablied

Recording identifiers

ISRC

DEF058702865

CopyrightID (CopyrightChains transaction hash)

0xf5e12dcd28fc4119c92c27b3e677c31050a624d424ebf95b75617a8c2c2d0f16

Copyright registration time

2026-08-01T04:08:41+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-08-01T04:30:37Z

Bitcoin block

960509

Canonical record hash

sha256:e902093350a758e62ddcba5c36e710ad217d49a600070f10339e6cf5baf4df82

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result

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.