Um Homem Na Cidade

Recording by Marta Pereira da Costa.

Recording identifiers

ISRC
ES69I2401479
CopyrightID (CopyrightChains transaction hash)
0x30c4bf7508fe5e8b67b653f427a0ebf80c52b5cb19e69b51efc125f5df166fa8
Copyright registration time
2026-07-29T18:29:12+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-29T19:35:34Z
Bitcoin block
960138
Canonical record hash
sha256:31dd8baa34b46db2437aff4ca1530442e07bd9857860ee160ed4b6940472406f

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.