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 0xd422e417e88a7f452fb00b05c16a1167f465b772d76fa4b9d556f4c498aa6cef. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43c5e671-5bad-403f-a0aa-601e2bf425b9.json and https://artists.proofprofile.net/proofs/artist/43c5e671-5bad-403f-a0aa-601e2bf425b9.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 0x76e899dce0782c7b2dc788eca783878119cd92a2f8210cc1a8730ca300c512fa. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZPEW2445342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543c261b4110d736d12f8c0009f2321ebe1e95e71fc4642d84f99fc6e47a4308. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBKPL1955252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6fc23ba11107b1e865928e74c1745790e06f7eeb8fa4d548c2eefb978a5bc12. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKPL1955250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e4778e53003212c7559f65bf1d0339deb28b40c1b780b955c4e4c3d2180aa6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKPL1951183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75294ed34cc9840e7b01d70107b6991b5879bee7474d28adab027a53338f2d5b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKPL1818724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bc5bf2ae452421050c030e4a4a55373b995b6c98d9633cbb27bc7894647f1d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKPL1955251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a3019ce5c59926d80139514a57c7507b20f4adb75a1f543d810d0d6b924e7b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKPL1955256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba1379df117834f15ab8a262686a6a71046dc1699e6749cf7a7b74341e254b5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKPL1899369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2a61566d12557c13520e79c64a276561cec4201d6286137024995dae8b1630. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKPL1899376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8919d55ed8994416d8f6787395c907210a62bee8d64bb5ee2b7eec2a7720603c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBKPL1899378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34dd47b9687c3227a2f18867456df81e39ba7db5d3ed5730da16358985dcb013. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKPL1899379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730e6347f896d256ccb01eda2018de6a6be572de0f3537249a8e5d3df2be2404. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKPL1899370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6bc55ee2525ccff82e0ab1fabf05e8c318c1316f07758fd21cb79e8e15da0f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKPL1899371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2230657a32cb15053c69da261bd2af0f71e32dc406e4f3c5f4d0188630afa0cd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBKPL1899373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb76fd745b246d2262738db338b4fee9b932a53ec6686f0dcb7ff41ea46f953. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZRP42232137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2e864171f3bed32269c277544ec35eacdc6eedaed0e8a3325047f0768f54b9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6N22143553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6d046994958181b0e8d8e212f3c9a90ea4c5a07d55f294aefb32d7266ce322. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM6N22143555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2b8b1592f754a04eb0a107a912a1bebfb2565358980ede7ec90382fff5981d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNWU2168241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c03c70795bc770362c58caace371aa25953f15b58514e253b868dea9f9d093. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKPL1808000.