is an original Japanese romantic comedy anime television series directed by Tomoki Kobayashi at Studio Gokumi and AXsiZ. It aired on TBS between January 5 and March 23, 2017. The series is structure
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 0x52c442f5508261318ee19507d7c99ef261a8e3cca003174bbd5ddeb1dc6e4e48. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b6dcf4e-ecd7-4d16-b08c-720e3d868b49.json and https://artists.proofprofile.net/proofs/artist/0b6dcf4e-ecd7-4d16-b08c-720e3d868b49.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 0x44fb6edbd70f99f517f52b1622d419cc92cc58105e9085aff7280513109ee59f. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T06:29:39Z), 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/QZS652183854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65c2bf6d765ec9884fe49abd95b418fd6c42885f5b866a0db3a66251dccf9e0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZWFJ2458140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631526a5ff9a359d73533957ad82837466d67123570b832f249702bab7c936e1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USA2P2465287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd928b5051c694f82714671840233a01fb221607609e85073849f0e260f135964. 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/USCGJ2568721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a108ad96ff94247ccd57b92f2daa48389e44ea69d47ca6c6a8fd76d76c4bd0. 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/CAGOO2554923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfeb9b71c7942df6a0646e63abc923f6eac3caba81878e9b4f5548d41a8f8def. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZMHP2330813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769b85c01bc0cd80eb5ec0eba67a12e0e77ac223384409d57507d0c544848d7f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZMHM2304635.