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 0x96c05d5f9ba608ff132ac9edd2bea40245479e37b82f040d7cd4e3facca13d2a. 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/d7eadb36-98c7-46c0-aa01-20b67ea37185.json and https://artists.proofprofile.net/proofs/artist/d7eadb36-98c7-46c0-aa01-20b67ea37185.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 0xedf86cad8bba01006fd8ace7ffbf3291026e50245f3ec3525733a5dd00789953. 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/BXM142300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f545bb130db4f479bb8c08a3ffe9b09f46e76cb1509b3a184234a85900e5ffd. 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/BXM142300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfceacd4e783b155c12b87ec90432e42cc9bdc3d1d5fc4202cf4e56c91bf3476a. 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/BXM140300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5677ce35d05cbd21a007e9b7e08d7c02497e01809bda636d34830b3f7e6c76. 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/BXM142300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb983f054107c50be03ca17d0fcac589e2e8fcc783ae83ad0ab0a9944f1985e26. 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/BXM142200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a8fcf605320af7e842c1365bddc206ad14eeafa2dc2be58c0bb5a9341c8d38. 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/BXM142100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e8ee67c853a67bc9c974b78439df2f1e66ab9470033feaff1fc4071e4642b6. 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/BXM142100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33e244f6c3c6ab9656983a41733b3c4ed46225f4af3782af0b4f07fd7988d78. 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/BR6RI2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5473f80460fcfaef78aa713eaa8875572399fd93df439b45e84daa666e731c3b. 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/BR6RI1900028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03c81049d7515ea33071968b62f485b7713b6f6311aad4476a7830556462c65. 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/BXB281900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab2a20f577d152b079c43b333315359223d83db9e62b143dc7906b095eb86ce. 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/BR6RI1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e0c261a901cb218b0b5c6b7ed3f471e1a76dca1355a46e00ea5ae775a2cb01. 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/BR6RI1700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda624a4005a2b8fdee2539586797f33962e186ad8f98506f26c8da0d6b52908b. 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/BXOP81600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df3dad5f3e40576bede418ac648942a8f4a61a98760e613c579ad8f3c00e1c0. 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/BXOP81600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff831b50af89e2842c0d779ad9add1e4ec21342af72ab743e379e4abacc6e93. 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/BXOP81600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecde5ec1418769d3217540eb4626e087157cc0173aa8c8e6a4a764e1d7942fce. 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/BXOP81600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540c5cb1fd9c7f2c67130ba789641e946f5f6586381305cbb9694075be56b5f1. 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/BX7MG2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e52d5b7eab00243c80840058ff73302075890c14588b067a517bbf9060d3b02. 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/BXNXA2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd9a73423f5c99052fa7c819145452993f0245649a965525950c72d79e7fc22. 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/BRDEP1200286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab730b8b31430f1e07355b2b383cd20c12c96d972c1fd0d434f24b6ae8f0261. 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/BRDEP1200273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c53c9327724154e31fcda4db623a1c544333c15c62e648a6bdb606635c34a7. 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/BRDEP1200274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d9af572cf896a65ef86bde2e3740f768e9b90ee738ef9d54ecee7ed3e6d8c3. 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/BRDEP1200275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb0e1f18514b9a562794c17561b070cc8cdc4d9f38f9e8ee09e0f8cffc324ae. 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/BRDEP1500319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1d9189ac89a455736c8cfc27bf40ffc48899cfce4f66215fe525462821903b. 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/BRDEP1200287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611159196adb03b62cd008378d0ce65edf6b989dee5c975b1d7c24749aee25d5. 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/BRDEP1200285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe546da5f0f9e88ccb4e1d1aefb2cf9ec5322cb54a2da8f6de989d37a1ae3c434. 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/BRDEP1200281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654e98183258a2685941dff14103f48138382152ef70cf165426829a3d720ad6. 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/BRDEP1500314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93668fd5c46840d0fba062d762f629b2017b873fbee6d4b34ff32935895a9b9. 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/BRDEP1200282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35675f26235a172f40625751c6150d6db58ab29a052fe4ee563ce81abc3f1d8. 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/BRDEP1500321.