É Difícil

Recording by Pedro Abrunhosa.

Recording identifiers

ISRC
PTAB19601292
CopyrightID (CopyrightChains transaction hash)
0x52029937defd6b4a90b46ecd3156ca0f9b09ef26e2a2bafd3bc55f33172474ed
Copyright registration time
2026-06-09T09:42:19+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:30:09Z
Bitcoin block
956302
Canonical record hash
sha256:9fdd6b2ed7a8258ed29f53fbabe7a4d38026399d139556f88e001b0da1f5b92d

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.