Sorry Seems To Be The Hardest Word

Recording by Flora Martínez.

Recording identifiers

ISRC
ES71G2407471
CopyrightID (CopyrightChains transaction hash)
0x6ec56c79162873115d255843e615fe72fff780af9419833b97833b51d8238b0c
Copyright registration time
2026-06-09T23:29:41+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T13:32:09Z
Bitcoin block
953520
Canonical record hash
sha256:e99084454687efa15edcc8496bae9bcaf4815f07f2e18ced3ef83021f9f5afff

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.