Na Contramão

Recording identifiers

ISRC

BRUM71200519

Release date of the album this recording appears on

2012-01-01

CopyrightID (CopyrightChains transaction hash)

0x720fed6b4eaad71da653d3b6a42a6f50259f8d3b3393a4fa357ee41db0bdcb2e

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T07:28:30Z

Bitcoin block

960220

Canonical record hash

sha256:42e9cc969b40a49570c0b40b25af3210777b7a53f216bf345f7830ea4a1f4da3

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC BRUM71200519

What this proof establishes

This recording was released in 2012, 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.