Kraslice, dopisy a pozvánka do Číny

Recording identifiers

ISRC

CZA381215212

CopyrightID (CopyrightChains transaction hash)

0x780f78624f8351aa0758da6ad835c3aad1b1b07dd8d9f45262c5d8429db60d76

Copyright registration time

2026-07-22T16:37:38+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-22T16:43:41Z

Bitcoin block

959155

Canonical record hash

sha256:2f82f8ed8b8166e724fd693e37aa587925b002ec34949da1ee668fc38c212fd4

• 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.