Stadt und Land, Polka Mazurka, Op. 322

Recording identifiers

ISRC

USQX91702246

Release date of the album this recording appears on

2018-01-05

CopyrightID (CopyrightChains transaction hash)

0x97a2ec0d467a41dd2045b613f68e7071938c9034d0b2a986a421d48f44b3b4ec

Copyright registration time

2026-07-30T15:41:45+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T16:01:17Z

Bitcoin block

960276

Canonical record hash

sha256:0593f56dbd450d6a2f5897d385eff6db31008999a75615d0982b17524b3918b3

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC USQX91702246

What this proof establishes

This recording was released in 2018, 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.