Estranha contradição

Recording by António Mourão.

Recording identifiers

ISRC
PTVC17300031
CopyrightID (CopyrightChains transaction hash)
0x73f4f46e63f3c6877bc07fa1a925db42fcb655184fdb7c51756d2f27e9d6c20e
Copyright registration time
2026-07-30T06:08:53+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-30T06:39:12Z
Bitcoin block
960216
Canonical record hash
sha256:6d6283db59b566741275a3919adf520504aba815b188ef7c91d9625ecfb58c78

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.