逢坂裕：ソプラノサクソフォンとピアノのためのソナタ エクスタシス - 世界初録音

Recording identifiers

ISRC

JPCO01928840

Release date of the album this recording appears on

2019-12-21

CopyrightID (CopyrightChains transaction hash)

0x61576f6463ab79a6049b4e49e58a041b3899ff7b4643ff29c374f56f43e116cc

Copyright registration time

2026-07-29T18:50:21+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-29T21:13:37Z

Bitcoin block

960145

Canonical record hash

sha256:a2c337f5238caa50b5c8a17f6e08815fd2b24a3d15a13971a47f9085049c5ab9

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC JPCO01928840

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.