1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd1ad865fc2ef9b7be206f4ffca20080780e261fd5b81e783d1ef3ac187a84b. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3964f83-826b-4c58-ac71-95a4a455dfd9.json and https://artists.proofprofile.net/proofs/artist/f3964f83-826b-4c58-ac71-95a4a455dfd9.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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83077b11d6377b02fd85f4d728a11c661487f494df4acf815b5e993a9c2e3a66. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPPI01552010.
☆SHOW TIME 5☆team鳳&team柊/｢スタミュ｣ミュージカルソングシリーズ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a3e8a28e960ce2800479dffae48b94e3c8630a46a852ec10d36fcc52305c59. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPPI01553570.
☆SHOW TIME 6☆team鳳&team柊/｢スタミュ｣ミュージカルソングシリーズ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63c27c61aea3d9ce16a8597662fdd242b17c94538be2c47e37710e692f3becc. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPPI01553300.
アヤナギ・ショウ・タイム - 鳳アレンジVer.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f104e6893ac8e3ffb33200edbda9181d60c982b65526774ce19f9f0e1324bf. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/JPPI01553301.
☆SHOW TIME 8☆team鳳&戌峰誠士郎×卯川 晶/｢スタミュ｣ミュージカルソングシリーズ
☆SHOW TIME 10☆team鳳&華桜会/｢スタミュ｣ミュージカルソングシリーズ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb203d4d399e03a72ff4a0e5ddb11bea4ff3753cc22be89237b31d16d25e7fbb4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPPI01553210.
☆2nd SHOW TIME 11☆ team鳳&team柊/「スタミュ」ミュージカルソングシリーズ
☆3rd SHOW TIME 10☆ team鳳&華桜会/｢スタミュ｣ミュージカルソングシリーズ