Marimba Concerto "The Crossed Sonar of Dolphins": I. Underwater Communication. Tranquillo

Recording identifiers

ISRC

DEU921809007

Release date of the album this recording appears on

2019-02-08

CopyrightID (CopyrightChains transaction hash)

0x900b6ca412f44364272c6d8adf6e10b7800379ae69dd039442727c42b19e4e9b

Copyright registration time

2026-07-31T14:52:14+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T15:20:15Z

Bitcoin block

960418

Canonical record hash

sha256:9c80720c6888190d9b402667edc132782efd3e34541f482433ee62889d889cbf

• Verify the CopyrightID on CopyrightChains
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• Recording evidence summary for ISRC DEU921809007

What this proof establishes

This recording was released in 2019, 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.