Requiem: VII. Libera me – Dies irae – Requiem aeternam – Libera me

Recording identifiers

ISRC

DEF057231116

Release date of the album this recording appears on

1972-09-01

CopyrightID (CopyrightChains transaction hash)

0x694a1f4660103acd765106aae4e8b39beeaff869e92702057fe625eccc69f25d

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T17:26:40Z

Bitcoin block

960285

Canonical record hash

sha256:2069300db2da1eb8472b9ea00de85d4a14d10075e12e9e5476bedab83cfa7a4a

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC DEF057231116

What this proof establishes

This recording was released in 1972, 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.