La Propuesta

Recording by Efrain Toledo y Sus Calentanos.

Recording identifiers

ISRC
ESA011751822
CopyrightID (CopyrightChains transaction hash)
0x25a86a6152f1ff9a4ef6403ccce5bd9488f7a06cbde2371d7a9826aeb299241b
Copyright registration time
2026-07-06T08:38:44+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-07T14:41:13Z
Bitcoin block
957050
Canonical record hash
sha256:97a0e512e4054da6576e077629c4937cef29c36205c8691e6a5ae89e326f325d

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.