Hard to Say I’m Sorry

Recording by Chicago.

Recording identifiers

ISRC
USWB10702882
CopyrightID (CopyrightChains transaction hash)
0xdf492d898a9a78d223f164607ba3eda5dab4c17479d82439a8ee25df4597f808
Copyright registration time
2026-06-10T01:55:47+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T13:32:09Z
Bitcoin block
953520
Canonical record hash
sha256:6105e9e0b1af7c912e1209572ca986eea184435b6333a4d9f827308024520180

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.