Sullivan: The Pirates of Penzance or The Slave of Duty, Act 2: No. 17, Chorus with Soli, "When the foeman bears his steel" (Sergeant of Police, Mabel, Edith, Policemen, Girls)

Recording identifiers

ISRC

GBAYD8700198

Release date of the album this recording appears on

2011-06-13

CopyrightID (CopyrightChains transaction hash)

0xc1a1a0135998873d365f32422d34b67acd3d7c670e9a8f9b525a53dc723982ac

Copyright registration time

2026-07-31T18:51:22+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T19:53:13Z

Bitcoin block

960455

Canonical record hash

sha256:78aa27e750076d770ec7dc52aa182b7a6ed692b736be94bd6798cb753f1cd81b

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBAYD8700198

What this proof establishes

This recording was released in 2011, 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.