Diar Automobile Company () is an automobile company based in Golpayegan, Iran. Established in 2000, the company manufacturers SUVs and pick-ups under license from China's Changcheng, also known as, Gr
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 0x552538621d36b2c52efada97f6fea849bf50bdbfa77e99d3f76b49cd2bd17f89. 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/bbecb3c5-2dfa-42df-8fac-0d16fd1646fe.json and https://artists.proofprofile.net/proofs/artist/bbecb3c5-2dfa-42df-8fac-0d16fd1646fe.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 0xc9c65f42b19979e01210f5efa12d37d3b1746349c9f9ea5e8eaa301f33a86f62. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEQ121749310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d9e7753704925626e695932c000e7dbadd8de3fe01f3c5f3376b7d79da248d. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/DEQ121749311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2707032424fb959bf7fce53d9c28c6abacaf25b3c1467427a98b762a975895. 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/DEQ121749312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51fe521ec331ac2427ec455359b042a63f704d76b609a7855a321e315d6bdd1a. 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/DEQ121749314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a78161f9bb57bf5aaea6bc992a8b15ae5167751ee9839af8862bb56b8cac81. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:43:23Z), 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/DEQ121749315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf078cf0d1ce8df078fc4b4a7bdc1bb0c83c393e477f2c23fb223a746b2b0d495. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/DEQ121749316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5ae60727468730e91c67d0e562dc5362fe91527f92095ff2d9ab47a36ff566. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEQ121749317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398289d2413ba78fa73baa131686d2bddc56a205d5f4702b0db9b5c71cdafc57. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEQ121749318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f00ba5e295080a76311ce4585ec84283db5babde92a2ee9bddc41db30ba19a. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/DEQ121749324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233ea949919350ad982b702fac5482f8c96ee9124d0691b15317df3a4c242c76. 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/TCAGH2299176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9f1059b86e54ad47e9f214d0c52e3b8381bd2694c6a57d0c61d475f52da2b2. 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/DEQ121746872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfc065d3ae1580a746c9ee68ded7208c9618a4566b1dec7d0ad9634197ebb59. 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/DEUM71503860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7bfac62bd154b773ee5fcb3bdfcbef2188925af8de9ecb7a2e7ce7fb50b2e7. 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/DEUM71503861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235b5f45baec9f999b5f26bd4e356a9210e6e38efb5c2f846fdb2457269d05f2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEQ121642038.