Sad And Lonesome Day

Recording identifiers

ISRC

USRO28825203

CopyrightID (CopyrightChains transaction hash)

0x570e527334974ec2893b470f86f2cc5b92d0c5380e1e0f51d0bb49f89aef3c0c

Copyright registration time

2026-07-31T09:15:30+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T09:25:34Z

Bitcoin block

960379

Canonical record hash

sha256:02ac27257786c7b30cb3cbac5df19dba17ecca2a36b2f57c131e4fb4bbe556d6

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result

What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. 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.