Kiyan may refer to: Kiyan, one of the mythical ancestors of the Mongols Kiyan Isfahan FSC, Iranian football club Kiyan Prince (1990–, English murder victim Kiyan Soltanpour (born 1989), Azerbaijani-Ir
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 0x3a166bc4a5052789b0a2f17a67bca627433c36a2fdf23f7e79a1ca5d6e42de53. Chain 2 (Bitcoin): anchored in block 954035 (2026-06-17T02:39:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3d736a14-d785-4322-86ac-58239d049c43.json and https://artists.proofprofile.net/proofs/artist/3d736a14-d785-4322-86ac-58239d049c43.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 0x25a6d61608123346c8e2ff8acdcbd91363697232363e3029856784dfba30a6f7. 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/DKCA41803601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39ea919b2af8a831d24ea22906c7eb952a621cae3502d986a358afb5025e53f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKCA41803602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987a392253989fb8f1c35a3c9e4cffc0574610f5fc9aa9fd454f79e1f85baaef. 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/DKCA41803603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5b31a4adfa3c3b7480e6e6ddcc30f97d7dece303c9a1ac8f6fc73edaae66d8. 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/DKCA41803604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d4505bb69f38ef2be88b73bdd64767b686eb24c8a03644e76031437cd17da7. 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/DKCA41803605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f606595cb3ccf05b90afe5b6e4e5edf4298278531f3ead060a204254eadf75. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DKCA41803606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74ae98bcd4594a0e1dde73ef16f6c019a213ada9fe42402d7c34f47c48dbf98. 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/DKCA41803607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a6317afc2992c3f6e9464f67d7df127f31eec8f40bd2f984f95d8818e641a4. 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/DKCA41803608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609d71814abce95a285b4ebe01573bae0896bd9d70bfbb1aa7beb9ebd86ebf32. 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/DKCA41803609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b170fe84d0c08562e596e6beb593b265d5a42d361efc29ef41f750ba9ea6eee. 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/DKCA41803610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a107335e8d4c17da85c639ec5b2dc6eff16f6f6c4d250af047db0a45529205. 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/DKCA41803611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0876f6b1c44e97f121c71ea8a3f1013bb7be7dad8b263c020742d77d3c931af8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DKCA41803612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde94188f73d06a03b53261adaf84b13ee28ba2ed1de4643c46103843fcf9514. 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/DKCA41803613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cd58f797ac4eeaefa376fa491ca88827a4e9a7465dfe561f17a38249bb092d. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DKCA41803614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7dc43924d01736c3c390b67ccd491bef11a0eb6242d3a5ed5e30eff57b0b4eb. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DKCA41803615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0b90af8777530192e2129f654abd840675a5a70cebe663f72494396e40fdb1. 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/DKCA41803616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef94b47356568ff86628e3c7c0b304ec878b52398e6c8139a20ea4712cee9fb7. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/DKCA41803617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604fceba6199e9be6ff305688e62d6103b6849dcd0a4f79c95cfecb835e0c56e. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DKCA41803618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509203a7e975db74451af0248508e98cabc2ec74da109ab2d6be29b1e6a4b9c2. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/DKCA41803619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304fda35a9afb06cb8a5ab1e4fdf6e550f6d0820b638313dea150f949c62f08b. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DKCA41803620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaecf3223506d2562e2e18177046b7913ece876e62376dee7187b7f1814f5896f. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DKCA41803621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c48d02334710a673a0fc50d07590bbc8ce36d80ca5557ee6b6c17d6b0b14e1c. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DKCA41803622.