Cartão Postal

Recording by Filarmônica de Pasárgada.

Recording identifiers

ISRC
BRBSW2100003
CopyrightID (CopyrightChains transaction hash)
0x3b7f054f60efc07c7f94196b0d16bc5ae92e7230a00a1285cc7aa4debc7b0e8f
Copyright registration time
2026-07-22T07:45:03+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-22T08:41:42Z
Bitcoin block
959114
Canonical record hash
sha256:f10497544e56b4b5dfcd3a1b97b6253ba297c38fe3f012aba9f048da5c471b71

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.