1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75065c31e91c80509a520b6485b774f25762c2989010c7874d846993703074c1. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55989108-f663-4782-b11d-231a73098c31.json and https://artists.proofprofile.net/proofs/artist/55989108-f663-4782-b11d-231a73098c31.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e6efca1d2f7a4f91d3a4b39d9250f0bc8595e9f83edde1d8b60fb507d3766c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPJ590900282.
ヒカリハキミデボクハカゲデ デモ
アシタガクルマデ アシタハクルカラ
イマイルセカイヲアイデカザロウ（AL_MIX）
イマイルセカイヲアイデカザロウ
アシタガクルマデ アシタハクルカラ （Ｒｅｍｉｘ）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124a362f60cba34c54ab53ea8bf31645b33c0df5e603cb2ad82885abc156f115. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPTK02014290.
u-ya asaoka 13th_Demo_20230125 (pre-production/Demo)
夜の海を歩きながら君のことを考えてる - Cover
あなたをあいしてる いますぐあいたい
どうしようもないくらい君が好きだ
LIFE GOES ON ～2024AG～ - Acoustic guitar Ver