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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 0x73849fa912db1bb1a11faeb5358f4d26ada528fff16ec9358e625be6c7aba43e. 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/665841e3-5168-4bf5-b2bf-3d75c00aac93.json and https://artists.proofprofile.net/proofs/artist/665841e3-5168-4bf5-b2bf-3d75c00aac93.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 0xe16e83e5f8536241c406385ede107b247a588cefb312d96ce560d01b49019615. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:43:52Z), 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/QZNWX2108709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ada3b0acca7a79c628cce72e426c94c0b25345c1142aca93f5684d98bdd022. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:15:23Z), 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/QZNWX2108710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fff067668190a851002e0d254d2da3d0368d99f3fbd84d131a271d1924c384f. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZNWX2108711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb10bfc8a7093eaca2a9cd5a812d3077348047b19df99ad1fa27e207a5e9b800. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:29:00Z), 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/QZNWX2108712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5fc956a097be90e12af2d04e90c5de3693dd9e3d3a2f5473c81b9027a0853a. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZNWX2108713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44d929fa7b92e9fb3688771f821e1ffcf6664019857e3f090a268cd5aa69e5f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZPLR2196138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590dab5a5781ee9ad909021695d8b9d06031983fa81e8ee0c1288b5c64a2e221. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZPLR2196139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac028efc4f3fedaa5659d01bb705531f13c0af391fe518cbac06c193dffa75f7. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZPLR2196141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0833d64e62512e664e61ee3189a850ac325b52b6ed43b2e47fc60d4630398f85. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:59:42Z), 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/QZPLR2196142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f399472212a0156e72d517833d85f8bfa931e5a42eea678955d49ac2690a5da. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:02:11Z), 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/QZTAU2137648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb261a5fb954379972856336b399b049f6a5c3c7ed40945ef450c2394905cca17. 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/QZTAU2137649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec9e3358c395e0da0ecfd812a8804e3f56bc06ffa943d31c5de0198a87b301a. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:00:04Z), 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/QZTAU2137650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8181106850916c5fb81fe890ec78ad276d98b003a5771eb7d4f3d5eb0397db5b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZTAU2137651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f60891c6736d791a11595572b2247c3fa1719b25fde285441bf2716265382df. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTAU2137652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd319fa2be5a72d1181397e08f06442921485160036ccb8f23aa20ec1badf46a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZFZ72216502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e87aadf90794ca69638d2a42788a5039f7e26e8b67798bd7869b477a5a333c9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZFZ72216503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae5cc2575977fdc14511a1fd3000d033cee94163df1137e626535113af5da7a. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZFZ72216505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a37ec386472403021fb7ed7c686f6a066027bde32ed502cb0c6a746df678129. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZES52202198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891d548b41cc26f1cfc90b4af22f033af3947c73f6079bfa938dac2f64a60b0f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZES92214403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f382405881278fc59307a933116d43aa89c0a518938407aba24362ca23e0b6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:56:13Z), 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/QZHN62221707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51d9536ed4d8b04682ee8cf94a85f73d12d9134d7e32e103a60f9226cb66748. 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/QZHN82231696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c78b6f72df7187ad80fd0d76922bcdc9360cc18ab6611aca771628beae2a5b. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:57:29Z), 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/QZK6N2238071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f079f975f6905d41bdfe0c7511fedd4f0531adc33e14c37bee4829e0ad1143. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZRP42217752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a128ab4332bdc92ccf06a81275fc1e5590f81b75a329a703aff156e0f39136e. 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/QZMEQ2412011.