Hino 21 - Não Mais Oprimidos Seremos

Recording identifiers

ISRC

QZNJX2048163

Release date of the album this recording appears on

2019-01-11

CopyrightID (CopyrightChains transaction hash)

0x7f273f057f55fbf5c332ed0c4c1fdaf98359a71bc93bafb49df13bdb8253c308

Copyright registration time

2026-06-09T21:56:46+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-06-13T13:32:09Z

Bitcoin block

953520

Canonical record hash

sha256:bf896a0806706453b6a332dd7c8ad768e25689dd61d1250a3cd756d19f0a7e3d

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC QZNJX2048163

What this proof establishes

This recording was released in 2019, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.