Kiyoshi Ishikawa (石川 淳, Ishikawa Kiyoshi; 7 March 1899 – 29 December 1987), known by his pen name Jun Ishikawa (written in the same kanji), was a Japanese modernist author, translator and literary cri
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 0xf5aa6f7b6d552bba21e7fcb2f37b999b1ae8f4b3adf8a725f1b7bcf7bc3758a4. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c0a2ddac-17c6-4f3b-bc9b-571c6e7f1dbe.json and https://artists.proofprofile.net/proofs/artist/c0a2ddac-17c6-4f3b-bc9b-571c6e7f1dbe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Robo -Story of the Incomplete Robot and a Doctor-
Green Greens Theme Orchestra (From "Kirby Super Star")
Green Greens (From "Kirby's Dream Land")
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 0xe159bd7bb65e6f9b4e061dee3947c8844dcf1bb301eca6eeb5e90cdd32ad1e42. 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/QZGWW2056193.