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 0x5947403aecaba9b76817c330d60a54dd48e0d027609131946ceff065ade4a5e4. 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/79762ea2-1930-4a73-8db2-2396d21196a7.json and https://artists.proofprofile.net/proofs/artist/79762ea2-1930-4a73-8db2-2396d21196a7.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 0xca723a44429eb2601554cb8c448422bb1e17e582a5a9e43d88307ed214482067. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/FXR752409315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1b6591ef1367f01c60b81001883dccd90895e7b30242dd813912e3ecd0805b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FXR752409319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6eb5c50682ad8148dcf567ae703f8ff68412a18dd1955eb52bd243e6ac5e31. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FXR752409314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54dbc2a9cde4dc656b68d6a9421474b47eae896e93e213d104b27234e92b4e88. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:10:59Z), 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/FXR752409313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7cc4368a238a6dc16f993bca5a1111dc0c4005d173a8de5241807b75cc0ad7d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FXR752409317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ddc95744122691a76faf6ffd67d0945b60f42923baef907971087f1a8e7d47. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/FXR752409316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63e02fbc338a126759eb625be2a26902da20504af6eba529c426b11b0672797. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/FXR752411240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995d62371fed5568257e989f954d969b463a69e41fe040f0a25a223b74cd3ecf. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:08:57Z), 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/FXR752411242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4bbae1564552faf96d47b009fbd386942777f92074f2204d9476b97bd8d8ae. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/FXR752411243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd761da3b0a8a9a0e06b1c278e5d702e47787020b79d6b46ce5b4f2c3fce736b5. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FXR752413075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19eb93f69f2add90b5446945fbbe52048eba25ec0f6302ad93b1ffdee1f88b73. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/FXR752411252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d8c6e50d25c271b4f3450a271b0d67bd5c3b72c5c3770ea4a12a8930325d86. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FXR752413065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9a78cf13779f63f8f9f8bb7f36b9d4ca3bbd3511671083d957626119fc3fd0. 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/FXR752411254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc067757a7913de86825e8c7663cebe90c31ab0457332352258e49992ed71bbf8. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FXR752413069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b51622c4711ab76900fdef4550c1adb221c27629071cdbac6d8a5003d80e3b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FXR752413070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e6a370370952a1b39c753507f3bddf8b256ae266c1b408f0b78e578f3d840d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FXR752413071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7487e817444a80057c70f1d49f5959a475f8429f8b8af2d65645b3d0e3c6851e. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:41:28Z), 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/FXR752413076.