Portela Na Avenida

Recording by Cristina Buarque.

Recording identifiers

ISRC
BRDEP0300257
CopyrightID (CopyrightChains transaction hash)
0xba4facd1c96de861abeeb68a463956ee0957f6c14013f451a6cb52e07d40a5f2
Copyright registration time
2026-06-19T09:25:48+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:30:09Z
Bitcoin block
956302
Canonical record hash
sha256:183549966615a278e1aa35a3a9eede09116e78b26a419cfee496d15753185bad

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.