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 0x40fbcfdd6148c98c0d802f8f303099f8abedd7bd15e62346fb53a02bcf01e467. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce3baf0d-2bd2-48fd-9ccc-d4abd6d4c4a0.json and https://artists.proofprofile.net/proofs/artist/ce3baf0d-2bd2-48fd-9ccc-d4abd6d4c4a0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
読み聞かせ絵本CDシリーズ「ほかのくにではなんてーの?」
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 0x5bb69174810cf544597d320fa41b519a888c0b675b8156dccf82ed1ba95d1259. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:51:32Z), 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/JPPC02111125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe820c69eb46bf18ba63ff84987c3047e6bc132205c691f7b85c587948c66f909. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/JPPC02111126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451ed15dd5ec2e38c04d77e7c8a94652f7106cee7e158c184682039ef508f3b2. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/JPPC02111127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64a020a812f48a7f692d363a0af2f44808c0fd1bfca04c0a8c8598c93ba6d15. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPPC02111128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231c82c80550427687176cff0b2c79d98a1cd19f9a5d56974c4e99f347645a32. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:40:35Z), 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/JPPC02111129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ded3fabefa2990472814fd67c344122f82368abbba643b15aedc25d42c49cd. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPPC02111130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331451189f3b2e96f11869f8e8856de7729c17546816aa0ed7f87180a75129ca. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:00:57Z), 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/JPPC02111132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b1d95bfc64bd47d003e6b9af22c61d9fca50979ca45fe84e0410299e09127c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPPC02111133.
Stella Magna: Songs from Granblue Fantasy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cbdc3a735ec8f68a1da39dc1f3e6c37c4a95f3165f4b8b3e4e906a00a60daf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPR502031946.