Le nozze di Figaro, K. 492: "Endlich naht sich die Stunde"..."O säume länger nicht"

Recording identifiers

ISRC

DEF056131714

Release date of the album this recording appears on

1962-07-01

CopyrightID (CopyrightChains transaction hash)

0xdfc8e2f91be7af8c64a5964d8e413ee73e31da55bec3c16f47a5121b4388aebc

Copyright registration time

2026-07-31T10:14:32+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T10:20:10Z

Bitcoin block

960389

Canonical record hash

sha256:0ab1b61ff0cfe419c69a7c087bdac0a59fe11e81bb3467e143d7fb1bd9212f5f

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC DEF056131714

What this proof establishes

This recording was released in 1962, 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.