, officially , was the title of the military rulers of Japan during most of the period spanning from 1185 to 1868.Spafford, D. "Emperor and Shogun, Pope and King: The Development of Japan's Warrior Ar
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 0xb100d687075b55f852b68d62394fabc1460409caff2e98c6ceaad1964cc096f1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a643fa8-924f-46bd-ba75-de29ef2924ad.json and https://artists.proofprofile.net/proofs/artist/6a643fa8-924f-46bd-ba75-de29ef2924ad.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 0x34399038950b0e7d51bac3b0460ddf6538257e8e248b71e248aa395846e12a46. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/JPSR07924830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181c0fb47e626b6a2e819f1ddf814a06db57b31f0ad10537469e5227cf6f051e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPSR07924880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6597be898e7c71c45e56f9244f7ed1268c57dec0c110678e408d90603cd6a591. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:57:56Z), 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/JPSR07924910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7640bf05c444bb4ca4c4b93f4aa0472250035d24828833877f4bbd17deb1444e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:28:29Z), 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/JPSR07908760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31c39567b919e9b4b732720502b3c7b14e2a4caf0243e961bc5141219eade13. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/JPSR07919840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb610df4de4768a6174c038f17130ab7e13739715ce11b54f11904faa463e10. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:03:56Z), 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/JPSR07905710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe962987a7db613dca3e6b42aca64edeae69a4419f91adf7d4ddcd84ea4a2aeee. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:07:18Z), 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/JPJ591103830.
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