Sonata for 2 Pianos in D Major, K. 448: I. Allegro con spirito

Recording identifiers

ISRC

USBC19400374

Release date of the album this recording appears on

1995

CopyrightID (CopyrightChains transaction hash)

0x843c214b054553876bdab1efe96503a9b861577294db8e85dad58f4ef86c49fc

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T14:53:07Z

Bitcoin block

960268

Canonical record hash

sha256:b48ca3be38664d8ad69d175b46b3761730b13e584757214a213b3b5cfbb284aa

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC USBC19400374

What this proof establishes

This recording was released in 1995, 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.