Ktoś całkiem nowy [Etiuda As-dur]

Recording by Frédéric Chopin.

Recording identifiers

ISRC
PLC592000101
CopyrightID (CopyrightChains transaction hash)
0x662ad2bcc105274b60b3e04627703908f46881d613495afe76214a6dc6103cee
Copyright registration time
2026-06-27T19:21:50+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:d87ae1064fd19fc171fd1c4b2fb858a81a2b4fe70f9c6f8a29515e4426f8a46d

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.