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 0x2a38d3c5fe881cd376fb78641bd56a78c9f6154281528a46c76c4b84bf1f8fe8. 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/fb7e7cec-342d-4098-9174-22e9583c4c6c.json and https://artists.proofprofile.net/proofs/artist/fb7e7cec-342d-4098-9174-22e9583c4c6c.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 0xb1f45a947c759d995a5cd49994f9bb1925a71c1b7fa63cad57252e39951ace01. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNMU2569000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7482dff2953a378a82afa3d11b693c5adad61378a0f13a5deb9580cbe123907. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:51:35Z), 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/QZNMU2569005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483c5e56037e19da0766995e43472a954ecf70fdcbb66e45ad8b3396ce9f85ee. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:06:22Z), 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/QZNMU2569008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6df59296662ed43188fd8d3d49c57046e66d593701140f0576f22097270127. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:35:31Z), 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/QZNMU2569009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b9180a36f36b83562da947597d874a21f7e08f62444e2a5ba11d9a68dd03f6. 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/QZNMU2571712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c30727e2afb7baf69d3b6f40addcb7a8aa487a4a3a27a8e4a36dde43f840b06. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNMU2571714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3e0abeba4097f191a8a95c46d1b33fe6b0a62c26e20f9edf4dd3b76ca2826e. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZNMU2571715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298be7a181adbe30764a45520080b1a98008e70b56d6af02e49e4f89d083bd9f. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:43:39Z), 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/QZNMU2571718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1033f3930579f38bd914181a20ccb8898e405dad44888495d438eb45437fb852. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:33:50Z), 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/QZNMU2571722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf8a001fc28030e09d92e7e32c6b6d287ea798dbcdbd255b4169f8047559b15. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZNMU2571726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ff6d2b9e3738732486599840a99a9b1dcd92f8e69f048383b25d464163331b. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QZNMY2526719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660c9b30df215fbf6e39afcac8378099c5ba3c4113f0df58684b275df7d80161. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:39:00Z), 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/QZNMY2526720.