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 0x13b7b4bd62297d0dde8da537db81741db7d888b83b046a3b2a20cc84557c34ad. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e578e5fb-4923-4c91-9269-e6e5ee3ca1d5.json and https://artists.proofprofile.net/proofs/artist/e578e5fb-4923-4c91-9269-e6e5ee3ca1d5.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 0x6e589366b00268760976b67e410bc412adf458aabe1e1061e73768e29184db3f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FRX991506597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c4fc8f1831ec51d5580ff1c49e9110405b60e48498333b1289e88883daf322. 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/FRX991506599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f464162b42109f563b9ed9f817dd33056366a9bb054b73582e74fae2bf2d312. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:04:40Z), 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/FRX991506602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf4369774713da548c5c56a91b77e91c87c6867c99a19e5fab0e78c3d6050c2. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/FRX991506606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92323c850cd22808bdcd2cbc005283bcbb70d32d1a67aa4a93b9bad4afe15916. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:53:15Z), 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/FRX991506621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8302f558895266b36dfe31905d0fcab6932574599d9b38f25d2b170015aac648. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FRX991506622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe517fbebde65c7a939d5914d3bca455da4c5c6b8908aee987c83a37a755a21c. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/FRX991506625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98ed17055882ca9091fece9c9428c1e0826567b11e891ef008065fc4ebae213. 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/FRX871597808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a4317e3edde85315e13ca39b3423d45c034861ddda117aeb080c01c2532b0f. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FRX871597812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f85fa6252fdd97796cf8e834ef541ff982adc9e02f2c4216573509a651a036f. 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/FRX871597814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13d61345aebab6f79e589dcb78aa1e28980638f64cec354694223566307315a. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/FR2X41799901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53576a4ea63ea8b5b481c55ce3aab77165997be6bfb9f894c76edca61613161a. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FR2X41799914.