Ludwig / The King's Chocolate-Waltz / Blue Grotto

Recording identifiers

ISRC

USAT21002583

Release date of the album this recording appears on

1975

CopyrightID (CopyrightChains transaction hash)

0x9867990461200d6326fad3703440190f2fc924617527f44b81f1771cef287e97

Copyright registration time

2026-07-30T10:10:45+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T10:42:33Z

Bitcoin block

960247

Canonical record hash

sha256:a0031c593e80924effd5b6d849129077a99afce332ab1c5f31b7e250331454d1

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC USAT21002583

What this proof establishes

This recording was released in 1975, 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.