Requiem, K. 626: Lacrimosa - Sigismond Thalberg: Op. 70, No. 5A after Wolfgang Amadeus Mozart

Recording identifiers

ISRC

QMFME1907270

Release date of the album this recording appears on

2019-11-15

CopyrightID (CopyrightChains transaction hash)

0x673e00232adc6e10dc66ea28efac8f1b308a703759d869611189beaa473267f8

Copyright registration time

2026-07-07T15:41:39+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:20:19Z

Bitcoin block

957118

Canonical record hash

sha256:5c0cc2a4aed91ba51bdf8751a02838aece95a84cd284bda3e675edbf9ad6eaec

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC QMFME1907270

What this proof establishes

This recording was released in 2019, 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.