Cuando Estemos Viejos (Bolero)

Recording identifiers

ISRC

QMBZ91402218

CopyrightID (CopyrightChains transaction hash)

0xa0f65d4c8313b1e9208e9c64bdfaf10e29691377dfb85be7a926b99dbb530f82

Copyright registration time

2026-07-06T22:31:37+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:20:19Z

Bitcoin block

957118

Canonical record hash

sha256:d485e0ca85d917825d2040dac61e44ff36bcdf514ea23f5b9ebf2c93dac85be1

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result

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.