La Fanciulla del West / Act 1: Laggiù nel Soledad

Recording identifiers

ISRC

DEF057730505

Release date of the album this recording appears on

1978-01-01

CopyrightID (CopyrightChains transaction hash)

0x7b4bd5e2a083082430f077ec6e77b4d6e91c70a66760fe937e23e63b6627442c

Copyright registration time

2026-06-26T18:56:38+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T05:09:12Z

Bitcoin block

956312

Canonical record hash

sha256:2d7a58bb59a21170daed476285de8bd2d5094b8f5375ca3245fef930affae9e8

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC DEF057730505

What this proof establishes

This recording was released in 1978, 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.