Poema

Recording by Polo Urias Y Su Maquina Norteña.

Recording identifiers

ISRC
USFI20301425
CopyrightID (CopyrightChains transaction hash)
0x6d8ca03a45321143d3e2d0755893969f335dcced7f56d951956d92a0aa1532f6
Copyright registration time
2026-07-04T18:32:08+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-06T06:56:49Z
Bitcoin block
956889
Canonical record hash
sha256:d1512907e096d5b79137ed4b6b6f5ef2a738ef9b72c80160fcbbfea6b78def0c

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.