3 Madrigals: No. 3. Sigh No More, Ladies, Sigh No More

Recording identifiers

ISRC

US7850810052

Release date of the album this recording appears on

2008-01-01

CopyrightID (CopyrightChains transaction hash)

0x15d803c4998def83b8b40b4e11f14f21afb3c7b7b81894e182cab88a0c69b374

Copyright registration time

2026-07-30T18:41:28+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T19:11:09Z

Bitcoin block

960296

Canonical record hash

sha256:3bd821a03ef3708d44d30a9626c06358f5eda3ccc3ba42a4273accbf0c527913

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC US7850810052

What this proof establishes

This recording was released in 2008, 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.