Requiem, K. 626: VIII. Communio. Lux aeterna - Recorded 1975

Recording identifiers

ISRC

DEF057530014

Release date of the album this recording appears on

2007-01-01

CopyrightID (CopyrightChains transaction hash)

0xfbd15ae4253be7645c33eb51199ae87aa8455997d40a3d7674dac9f7f6eb7705

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T06:39:12Z

Bitcoin block

960216

Canonical record hash

sha256:e2787bb9660792aaef70284b251c33cc3d1cf7f4a1a00e8486ef506644cd9c63

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC DEF057530014

What this proof establishes

This recording was released in 2007, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.