Postcard from Rio

Recording identifiers

ISRC

BRP1M2400010

CopyrightID (CopyrightChains transaction hash)

0x02bbcbad3f1b87dee817a16ac79b1842f5f1353b71ec145dff5f9b21210df9a0

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T20:35:49Z

Bitcoin block

960309

Canonical record hash

sha256:f9988433b0f568548958780d0a10e2e831e612e47396db8f49a95a99d3a42871

• 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.