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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef1b44678a32ecc04b35099afce3fce48e7e93078e82691f41cc6f120120bc8. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6c188e9b-718e-480e-b845-e2acd8181cd1.json and https://artists.proofprofile.net/proofs/artist/6c188e9b-718e-480e-b845-e2acd8181cd1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
君の卒業アルバムにカニバリズムについての俳句を書いたよ
Itsunohinikabokunokotowoomoidasugaii Sosite......
Itsunohinikabokunokotowoomoidasugaii Soshite......
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b4e9f74573bd0fdb48a42ce9ec07c79206454a4ed28f40a0833897d676997d. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZES72280630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48856b0f9fdd5dda29ea41334a2666dcb6e818aa05dae3c794e1a1db29db469. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZES72280631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5f93f97cc903363740c742f80712033529a16e924dbab78585b47fde7332d8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZES72280633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5962806e88c4120380116184d704c2d51df2735eb5a1f17f36f9fc0a75d6cd84. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZES72280634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45669d5688ae1ee88d586d8d371c86c0ca128b6d1c9a1c4f288cdb6de3eee68. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZES72280637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8532098214ca73e7934c7368b4f44fb21935228315375548a2f64da73f91e700. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZDA52300999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f41f169d0c988fcd5fdb30e54fc4b22679c23aa25d8c519f8f9e4ca8e5381f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPB532300115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fc2813d430435cf2dca09ef51ae82c296f91a0cd6f6a198fa7501b0d34aca4. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/JPB532300116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a800ca322614bf4fe18c5fbab2d37cf08e11d108453a9e3c4b41dd89853713a. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/JPB532300118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc145309ce50baad9833a3db21fce0993b3dc09efaf2a9b7d097e452496546c. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/JPB532300119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc2ef9996fc0eef1a671df6e46008d6551988cb0ec09c982fb8d9048a9209b4. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/JPB532400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2bfa5202092547c368385678c2e7c390c7e460bbdd0641d870ff0473a5c142. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPB532400106.
学校空間における階級闘争について
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92acdd18eaf6fd4216a53003d705eaecf10a724781393320719f8e5f07faaee9. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/JPB532400112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f75fa9b3a48d9529dfd3773a1459878084cf6642de5f767c58e2c820c439940. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/JPB532400114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f661908be4acfc2718207c21a81496ad1769e1fe98407d599980376fd4727e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPB532400115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140cd1e2f76a1cf723efd6ddda258283af6ac5cbe578ea9b608d6c78772d2e34. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/JPB532400116.
ぼぼくくととききみみだだけけののせせかかいい
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2bfa5202092547c368385678c2e7c390c7e460bbdd0641d870ff0473a5c142. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPB532400106.