Porquê? (Nunca Más) - Ao Vivo

Recording identifiers

ISRC

PTES12103926

CopyrightID (CopyrightChains transaction hash)

0x166d31cb28aedf3a09de81aa58d289b6efac51fcb6f06886b34fc38d0a8379ec

Copyright registration time

2026-07-30T06:14:15+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T06:39:12Z

Bitcoin block

960216

Canonical record hash

sha256:c283baadf49d6dd9d69606b7393a1cad99db59d4a4e57eee90b0e9c551ca51b2

• 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.