Altan Urag (; , ; "Golden Lineage") is a Mongolian folk rock band. Formed in 2002, the band's musical style combines traditional Mongolian and contemporary influences. They're considered to be the pi
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 0x4873629e8f4a1194ad8bec55f1557653e04e7ffea714e271df684ce57ac84ff5. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2ac8c4d-e8c7-4159-8fbf-747f1b145d89.json and https://artists.proofprofile.net/proofs/artist/f2ac8c4d-e8c7-4159-8fbf-747f1b145d89.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b85c77f45c1a66f455f9e0d3babb184cd9adc1014c3983b38f74c23c01566f. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:38:47Z), 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/USCGJ1193190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2ce49d7944d918da1be0c0e6cae600e929ad1b04b68888031d3763f01c3e7d. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USCGJ1193192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424a92cfda76138ca62fda6d8b10ad3d218ee892a88b1eca131ce13fa70fdf4e. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/USCGJ1193193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54911666d34afe8c8514c9fcbd1bcded6c7698d4802b644f42a668e158275d59. 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/USCGJ1193195.