Fidelio, Op. 72, Act II: Quartet: Er sterbe! (Pizarro, Florestan, Leonore, Rocco)

Recording identifiers

ISRC

HKI199925506

Release date of the album this recording appears on

1999-09-13

CopyrightID (CopyrightChains transaction hash)

0x52d02555823dbfc4ed438535e68771a506aca2c09fa6e22a4287f2484e4810d0

Copyright registration time

2026-07-06T09:27:59+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-07T16:07:00Z

Bitcoin block

957061

Canonical record hash

sha256:ea1fb1da0efd3d64f8dde4f71236d3a03dd188848b3c83ccc86045ad370edf24

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC HKI199925506

What this proof establishes

This recording was released in 1999, 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.