坂口弦太郎（ヴィオラ）
Copyright Verification
- CopyrightID (CopyrightChains tx_hash): 0x7ed9c3b828b05f96b0483854fc95e39a7477a5666cd6f9ef7e959172413a8dc2
- Status: registered
- Registered: 2026-06-15T17:01:46+00:00
- Explorer: https://explorer.copyrightchains.com/tx/0x7ed9c3b828b05f96b0483854fc95e39a7477a5666cd6f9ef7e959172413a8dc2
Full machine-verifiable record (JSON-LD, dual-chain proof): https://artists.proofprofile.net/api/v1/bot/artist/12848606