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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4542095fb05697da71a74a88738cb8bd1a5cadc43288cc7129562530e5057102. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5f7b8543-ce91-4444-b7fa-2ec36fadf892.json and https://artists.proofprofile.net/proofs/artist/5f7b8543-ce91-4444-b7fa-2ec36fadf892.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Don't Want to Get Hurt, so I'll Max Out My Defense. Soundtrack
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3312d8dd7cb04ed742e7d861fc772693e0ef430f428a592f7837dab889c6d6. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPK632001001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afec7925928b14ab8d18d57a459930237fcfb625553ceec9a987ff50128a392. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:31:43Z), 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/JPK632002636.
TVアニメ『痛いのは嫌なので防御力に極振りしたいと思います。』サウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747bdef77ea31e97b9536fb224f5c56ffabb079d5935954c6063929bf81f2816. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/JPK632002646.
TV Animation”BOFURI: I Don’t Want to Get Hurt, so I’ll Max Out My Defense. Season 2” Soundtrack
TVアニメ『痛いのは嫌なので防御力に極振りしたいと思います。2』SOUNDTRACK
この盾に、隠れます。～OPテーマ～ - アニメサイズ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79599487c033598f94a5a71e7459180e32c419d4d85d53e53d13505ed28c39e. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:41:32Z), 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/JPK632300601.