Khiva (, ; other names) is a district-level city of approximately 93,000 people in Khorazm Region, Uzbekistan. According to archaeological data, the city was established around 2,500 years ago. In 19
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 0x4cea2b8b5b585e196542e6d8a8248d387ccede219acb4d04de1cc0a56adfe1cc. 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/2fa1790c-d766-4cd7-a4e7-5d9eaf624803.json and https://artists.proofprofile.net/proofs/artist/2fa1790c-d766-4cd7-a4e7-5d9eaf624803.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 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 0xcfec0d9b3fda5afd651a9225dcfdfa8e91201fd008fed5e719328f028daf188d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USQY51782546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf27377027a4803aabf38ef16d72cd536dfa48b3b9b8c4c5b79376b1dae5c83f. 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/USQY51782550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629dbe668246e476e7db9cb706181f1e3f65fb025c8f8526c736da9806e59d3c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USA2P1840313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637327078f437edc25a7ee709c33f6c974098e39e67e15871556c73621c923fc. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USA2P1840314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72f27719a374bbb6925e1caa3e1dfc324006b41c285ec98ba580ec61aee9fb4. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USA2P1932196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94831a068a257ac6ece704a57446a09a90ac8c862be4ddd64a0472a4bd4711ca. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CA5KR2066179.
Where The Reaper Stood / All These Things
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20251eeba78da4bf766b7618fa72a7a7e3087ce1fdf5a4c241c8f07650e3706. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/GBLV62000656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6182b9fc07c618d6ce3208be2e849689068c3cc422cb90bb1f1e5fb5f3db49dd. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QM24S2200208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85507328ca5c7a74ddb0fddbddb8604164cecc2450821ddcddcd2fa8effb5f7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CA5KR2274099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3461706adf54540dfd6a3074c01b6eae85cf979fddd4ccf2b8b3ce8eade20ffd. 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/GBKQU2296112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252a5a48641f886e6891286670d83464d0dd7daf4abc4781abad34276ccdb5fc. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/GBKQU2373267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbaf7fa549141f0ab2efd3e98304ff2a0ba9d1ce2bfcab3f8b98f24607aa8d2. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/GBKQU2373268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa05745d21b83352ba6c14ae5a978271acf7521cf9bcddaf19360ebe95e32254. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GBKQU2373269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42f5eeea07a3379a2cf7d999bbe0ba9bfac00d68675ae6f0c93a36edb261504. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/GBKQU2435618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3461706adf54540dfd6a3074c01b6eae85cf979fddd4ccf2b8b3ce8eade20ffd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU2296112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7789ea7e8e987ff1124112c8e2e994251b1f66d0b5e42d25dd8ff79b02a2ac88. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU2352792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d03a83fa3cd917bc308b7d5cb33d8c131e0e63d44c5d4dd66944cf721c082b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA2P1700375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e959db228ab41d84745799b34b19ede67268d52c733835710617755659dd3d9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA2P1700369.