When I Used To Dance

Recording by Ernesto Cortazar.

Recording identifiers

ISRC
USTC00947832
CopyrightID (CopyrightChains transaction hash)
0x32a5a9efe0f2150d4b5f5fbf79b93e68638202c31db4ecde1c2c52f934743578
Copyright registration time
2026-07-06T10:11:56+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-07T16:54:37Z
Bitcoin block
957067
Canonical record hash
sha256:1930ea1103638c2faf4873d8553d0f8277814559b2c1f4a60e6d4ff7436f3efc

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.