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 0xf21eb2e04e5b10e3f79cc74f9b43a8d8b8b2b3be6ad92bd378b30a175006e138. 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/3fcb2d69-4293-4ee0-af43-a972af64ca22.json and https://artists.proofprofile.net/proofs/artist/3fcb2d69-4293-4ee0-af43-a972af64ca22.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 0x1f909c042405b9937220905f7fce4f6c39f315ba1a01d1701c0cbd068df32627. 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/INS181601743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8175bfd9b5b265e5ed20db808e0722853215d534220021bd2fb668e65837d13. 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/DGA0L2326784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08ac12d4fef987455137e66b8934bfabe4c83d611d762cfd436aa84a45961be. 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/INS182300908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd745fb6ccc54e25aabad610c725fab535b31548eb3d279b63a04eb1ddc9b6cbf. 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/FRX282311642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119d8cd9a217eea34c274571c21ef9f34ddfbf87ce65ce0fb0ba7acc4fdd4e49. 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/INL231400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa81671d5274945b061e16615b7e770a8429fe93209ec330efb94b43838ac3e1. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZNC62210647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494e5a745eb8b6b50da39384e3af37f7550d99dec8b36aec4fdc31ab1c47fea2. 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/INS182200485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec17ace6dc558dc9525029b685abebd6bb6cc277ee1de1748f44b5ec5662d4a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR59R2219274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125afcc8946df259427a1ca8cab9d49a057a8e8fb0900dfd5d34495a4f4d0220. 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/TCAFG2046876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573e210a04738793b8b1a1f9afc613c094bbbb9a2853fee4d40b9fac49ee5c4b. 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/FR26V2071116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5ca472dcc863261b687faae58cdcd83374532c489f8492680dbdfd947536d5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/INS182001509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357a55ea401581d934076583276aa850bdbaba1fb489cdc1e09eaf0d4d87147e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAEW2062318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74faf459f52df07be0e8d954f53bc23adc44f91140beaf2aebe4ae8ac6ae4b9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR59R2001142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fdd6eedc836aae7c45c55953a97a3d3c80436778d56f042c552daacfb806ca. 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/FR96X1907981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0af73862279aac106da5222d6fde59b0463d341763d8fa4dbe7b9d95df85921. 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/FR59R1978577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3757801ca7421e0fb55a7dd9b35ef72192f88d6946ab5075cb6871d3123050bd. 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/FR59R1944712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2929a4ca9a16a9d250981fa87988e00b3b77b85083496b37f003d89c08a9f19f. 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/INS181802853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d033d2cac7f19c69bb7901e38c67ff43e73fa660e483cfeb43f383b37d11021. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/INS921801426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeaf3774c07cbd0fafabfac819683adf0eeaeebed788223d3fb62bd43b514332. 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/INS181800619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727dbf9f08949157e1da9980b55c18be99cbd138f718c99bb464ae1fe6164247. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/INS921801197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c802057d190a71630553233f3b9bd1a2a4113baed010cd75e190870b39ffd1. 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/INS181702217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19bd25938f9376f9e739d6e0af6ec0b5fd97447e68607179b288ae47b00a8ade. 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/INS181701488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937ddf568495522b69a08dcc90b648b917d4d735b4d86b6bb14c3b75ef7e2eff. 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/INS181700104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f8e2922ea0a6f88792bc5fe4d8675434e50a0995aa739f133026376aa4a33b. 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/INS921500037.