Kota or KOTA may refer to: Places India Kota, Rajasthan, a city in Rajasthan state Kota district, a district of Rajasthan state Kota (Lok Sabha constituency), a Lok Sabha parliamentary constit
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 0x6be3271a52693db7cffbc3f595ca0e41814ac39096698b6964c81c8dfb90388c. 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/4b9c548d-1445-4ccc-9b18-c0d6166e90ef.json and https://artists.proofprofile.net/proofs/artist/4b9c548d-1445-4ccc-9b18-c0d6166e90ef.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 0xc9d8512b366753faf5d36a83342fba85f563b8a435f3095d72b79938b24f70e6. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCJPJ1991179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8151660899e1dd00a5bde3ece372ef3fecdeabf61c2ef3fdb791a941fb252bd5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCJPO2155070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef71ba3cd130f7e22c8baeb70898564b4841d5f240cec3228c1c585989ab4972. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/TCJPQ2108432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779d99d032741ab911011bd8ed535635119be12e4ec8d1ff3f56f5d6c5d608c9. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCJPR2233461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9804d2249474ab890a98863ae2d197147913fb01da5191f10c2bc92883aa97d. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/TCJPR2233996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15eee222d156feb8bf3b9f27c5a4e948adc82771a7f60aa58f0f90b94d19a17f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCJPS2295573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4a750cf73c0463f6370b9a4c048055d116dc6955da8afe6323563826ea9985. 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/TCJPU2357709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae2971d160eb2f02fdffb8258e8cfa09bf8de70e1d9a1727df72fe6ccb6fc61. 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/TCJPZ2434735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1deff3702d4f92b1ca850be1b81aa1671f238a2f8213c040557af93a05e27714. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TCJPD2595958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7acddabe3701ab27df8261caf9797f1ac994e772402063a8a4d7d2150ee823. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCJPE2557304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b5e5dd244adf4b4cdffe782faef6927ba153b4a67efa967a45d1f8c9aa3347. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/TCJPE2564945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b27f75b696be6a9aaa72e04741ee41061d500c12e8302c1d5af64d60301521. 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/TCJPE2565205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7acddabe3701ab27df8261caf9797f1ac994e772402063a8a4d7d2150ee823. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/TCJPE2557304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a29a64a29a52e1410228d61d187be44fddbc3bac63e8cc61eb0fe3eb97646c1. 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/GBKQU1417991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc217b15570bfbe8b86fa247229b04dcf30cb2bd87ddd51ae4c97cf59fea662a. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/TCJPV2351421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe43dfa08c50fb2ad2637592cb92cb121f368281dbae8e474aa75431924f13f. 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/TCJPA2485743.