Taishi may refer to: Names Taishi (surname), Chinese family name Taishi (given name), Japanese given name Ranks Grand Preceptor, ancient Chinese top civilian position: taishi () in Chinese Taishi, a
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 0x4c00e0c4ab4a330f9d5c5b71596f7b6615f9f80c6abc1b515a97ac3bd2367719. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/afcfa1e8-91b7-4750-b353-b1fc9e7c2767.json and https://artists.proofprofile.net/proofs/artist/afcfa1e8-91b7-4750-b353-b1fc9e7c2767.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kojo no Tsuki The Moon over the Ruined Castle
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 0xcf355f7f08121f9c9b66260a022b5ad4f826228d3263de310107145ceb80a899. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T20:07:31Z), 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/TCJPK2088110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b8fa6cf4385f3470ca86c5ec37f988bcad0e4f4ba5e7259e5e3b76fd85aeb0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CACWV1954285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb39f1b1d6b2a56ac8d53153262c8f4d8ac0dde5c0a1512341a6546c516c1c5b. 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/TCJPK2061157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5011c590367caba02231fbf94bbcd9b207b36d2bd4f2e8683dc369aebba1f148. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/TCJPX2393336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73450b327c41511f963fc5a0d494297f90777ae0c3def7e646c89f388a61b83. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPQ941200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d3283a3bc6f6796e57b15a6c3224c56019649eb9b7a40e46f80c22cb6fca83. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCJPS2243468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096702b76785d3922e05ad7e29a39eb58886eec08579ac42e298320aceee8a08. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/TCJPX2393449.
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 0x6f659d8d5112bc359f58d1884dd097d9a9a831aa14d2919150929af8c5f30f82. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/TCJPX2392757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da669238c24ab6a5e79caf771df3f9679cdbdd2cc449ec41625644226a0db23. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TCJPR2200972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3615133060174777daf8f01e34aa0de6aeab41d9a038ffcf5b84422cfbde10. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/TCJPX2392824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9253c899dde3811e7754488173cfa74038c5b7cf0dcce8a440fa8bc14dfbae3. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/TCJPV2317281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454e67d13ad2c614c9feda887690d5887ac1fcc9004dd5a1ef3b62ee755b25bc. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/TCJPX2393031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787b60a662e65460e8f4cb0b3d07604bce9fb2e1ce19097b053580ead07ba23e. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TCJPS2243525.