Piano Concerto No. 1 (1961): 4. Toccata concertata (Presto)

Recording identifiers

ISRC

GBUM70802445

Release date of the album this recording appears on

1989-01-01

CopyrightID (CopyrightChains transaction hash)

0x8a35fe4bf194e3e00f38d7df1dc6f3b31403f94565880027971b4737aada3555

Copyright registration time

2026-08-01T01:15:19+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-08-01T01:44:32Z

Bitcoin block

960494

Canonical record hash

sha256:9941eb02933b720a5ba3e67469c42d4b32553fdcb1266b45c1c97b529a30e2c1

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBUM70802445

What this proof establishes

This recording was released in 1989, 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.