The Ballad of Sweeney Todd: "Lift Your Razor High, Sweeney!"

Recording by Stephen Sondheim.

Recording identifiers

ISRC
USBC10500361
Release date of the album this recording appears on
1979
CopyrightID (CopyrightChains transaction hash)
0xc69eb6a8ded9f2ab3d230bf30b72091da474f73d776f6d71e2935124a0c07110
Copyright registration time
2026-06-08T20:27:59+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T13:32:09Z
Bitcoin block
953520
Canonical record hash
sha256:2010f21159c1fc372564d658e246e4f5048736d5afd6b57f620d8ca83e32695b

What this proof establishes

This recording was released in 1979, 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.