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 0x3b6ced8bd351b66ff0b45733bf1b8559e4ab753187c6059b837429577aed8fe2. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cbaf660f-4e68-46a1-b3c3-9e28b5d53260.json and https://artists.proofprofile.net/proofs/artist/cbaf660f-4e68-46a1-b3c3-9e28b5d53260.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b781740972149e8d4bb9ed1e832931dab6a4588b7ccc17ade387a110620eb79. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPD641100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0099bef7625c81a9c87f7abd96117c906215d69e659b4f5b6b0949c4e6067e21. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPK630906901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d2eb0026c87f3a82f76e879cb9e497a184ba32c9318b49dfa268d1bd9d06d5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPK631102501.
TVアニメ『シュタインズ・ゲート』EDテーママキシシングル「刻司ル十二ノ盟約」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b781740972149e8d4bb9ed1e832931dab6a4588b7ccc17ade387a110620eb79. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:24:00Z), 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/JPD641100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0e9b039c645fcb0d43306c1a5579e5d6ae2efd2cd3491508258805ab6a50b4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPK631201404.
プレギエーラの月夜に - Instrumental- symphonic ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae655e7719a1d684cb90689946994e16f1475498817e13155d60bf7a61948d8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPK631303812.