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 0x540ca0884a79a0de6d28b059224183f158798561a75882eda1fcfa0f719af62a. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c97a5fab-62e1-485d-8736-534eb1e4836f.json and https://artists.proofprofile.net/proofs/artist/c97a5fab-62e1-485d-8736-534eb1e4836f.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 0xb14e9fa61a868f57cec75789c590dfc376c002764484c5cc7a1b9556c590e7f9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NONRM1306010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d9d09ca81ef174816f5d45e3318333ad05f9bb58f5c31f1aaef4a173e41633. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/NONRM1306020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0065e81e57641b8f0abca7f70f5fdee6cc53037da5d006d960e964288091cf80. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:11:57Z), 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/NONRM1306030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80380292e24e0b08721dd61f915ada24d2961ffeb5ac30dfa4404b556abc6531. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/NONRM1306040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0427a28c72f8d63a9efc666a322df828751b95898c1eb577dbf43610b89c28f7. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/NONRM1306050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871fb20c00cd2b3ad8190c2cb8c46fab115db6767a8df8fb426c804c790206b3. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:46:02Z), 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/NONRM1306060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596fc8a2d3ef1051481c1cdf105119c3a2d8ac6f9f1ca5942a068d511f6789f7. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/NONRM1306070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfabd657ace0f513a733bbfd34117fb8a56a130a909231cda93b81fe8e2ff9754. 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/NONRM1306080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50534de7bf4017205ca527b9aa387e27d35d03c52aa30efd911a867080cca182. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/NONRM1306090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7df865831f3aa00d9422953ebfc8485d5fbec84e4f463866752583f28c305f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/NONRM1306100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475e4f5ca2bd3b3a73aefcd2b82767b68838e2361d4a1b7cce6139d05845ca32. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:33:37Z), 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/NONRM1306110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899913e68275b004ae7399017fea45e1856b1fdeeaaf64c87f2c77d51e16f020. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:41:29Z), 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/NONRM1306120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc37c386edb1192bba70fd03648c47dbe90bc8792422cb17cd41d2316b64d1a. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:14:26Z), 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/NONRM1306130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e23858ee2f55db5b8eed8d969bfdf429a577a317cec3432eeb738f89153163c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/NONRM1306150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb425e7d226240c3d9c9f6becac6a9183e3ddbd12b8ba9f4d4fcdb88aab1fd76d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NONRM1306160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76fbe7e7843e0ad6b37c02042ed3c5b0875f87d466e83558d8f21cb246ab9f46. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/NONRM1306170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd2dcc2b8f2c7b698337306b32a60f29f03451f8a8e91c000551174931c2c87. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/NONRM1306180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976aad93adaab3cec0360b0c9604f1c162b80cb330748da39c40edd1f5fc298d. 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/NONRM1306190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e3fd8f1dd80347399d0cc468eefd6531c503ee2604ea1739b249017f4418bc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NONRM1306200.