Wienawski: Polonaise de concert in D Major, Op. 4

Recording identifiers

ISRC

GBAYC9300792

Release date of the album this recording appears on

1993

CopyrightID (CopyrightChains transaction hash)

0x43155935a7112558a6b4e2b2a1eb42a0f649c1369e9277913e1c04f492508bb5

Copyright registration time

2026-07-30T15:00:09+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T15:42:38Z

Bitcoin block

960273

Canonical record hash

sha256:257a61058dfcaa463681fa63a734ff584da28348c768b7830f78c451ca5aa564

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBAYC9300792

What this proof establishes

This recording was released in 1993, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.