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 0x63a676b2d5a95549957ad4b8252a7f71273d6621fec75c39bda12985529f08d9. 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/75710d3a-1bff-4c8a-95e5-e3525effe877.json and https://artists.proofprofile.net/proofs/artist/75710d3a-1bff-4c8a-95e5-e3525effe877.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 0xb60d63b7469b875092a7721d4ff8babadeacb853aaee713e326b50b0c15251c1. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GBNRN1790762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0e7caaaf9d07ef38b58e86dbe1d179ffead379fd06ac401e8bd222d7908059. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GBNRN1790764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa5bf51a182d29ae167a55b5b2983e79e88d5ed8c68807791db1e412de7dfdb. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/GBNRN1790766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5309bb18e0579fe3264b8b6862bd690f938bbe058854de9dce934af52e4bcb4. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GBNRN1790916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dad6ba35d6cf0621d1c98effb1e7984f825d7b08fb0ff5ae6e16f839852be97. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GBNRN1790917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71106a8cc22c3f733ab6c42dc70ee5897f72ea096ba284d8894c07e3884af672. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBNRN1790919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6752c39f0de14473faf3dc5fd44b609d7ce91ff871896dbee397a654ff921af2. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/GBNRN1790920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a458c717523040d354e93b40dd8ddc6a9e712e7ad63592533fbed390c761adf. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GBNRN1790921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c2e04f2ca56d4d343e20674a3da694e9add1b616aea058af252409fcdcedac. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/GBNRN2100094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88e7a35253ead01b6610c2a372bbf979183691e28d9abb62dae2fcdb23f334d. 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/GBNRN2100096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a327e7841c836020811494bb06a09fa709663c97fa594abbddd773e5e01afae. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GBNRN2100090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9814f805ca63e1923bcb2224d1ccc4bf8233e085515bea7f72a711bab647b256. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:20:21Z), 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/GBNRN2100097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe703cedaefa8a60e60c31821c3c2bdc6e887e01ca2a2fe3b1645058963c47004. 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/GBNRN2100091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728221716612ed2588ec705dd285c6513826b0a1e5d1a35ed58a572cf821cf3f. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBNRN1790456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7c8a8975246c6511a8ee2d47139dd834acbb139f8eb9f6179c2e7a5833d086. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBNRN1790458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3caef35b4efff2e2bb9b398981aa33be9274bc929b1690011ffaf06a878a89be. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:18:25Z), 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/GBNRN1790463.