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 0xc523370995b545053cb5b3d69530098c044f8359844e34a03bdbe31cbadff835. 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/aad29adb-6305-49ad-a773-1ef9e56315d7.json and https://artists.proofprofile.net/proofs/artist/aad29adb-6305-49ad-a773-1ef9e56315d7.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 0x742f8cbb0617babb84f34feda3debea7a17023c5f454b0906d49ba5d06c55e2f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBKQU2413056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17085899c159bfd81c34b130233796c7c6593c79b409fd0ff01f8a43ac3dbf35. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/GBENT1752586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab351ceac269f4ae42536ea3d9f5bfae1aab1d93045e0d604f3244d0069daf92. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/GBENT1752609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce5c391a96bdd36045bd53b39056b5ffc897dbf29d0a4704ab8cbff4cbae7b2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBKQU2499958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd82dfac4deccdf5710d5ab7d06326926f957cbf5b838a341bfa43f17b83d2f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBLV62422275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308724f722b289b65db4509ef51468290624ebb406c01728208e626b7069976e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBKQU2509353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c186fb6ace27ea0ac64ac01e1b286e4a09f9b3fa3a94134944f43e033f87b41. 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/GBKQU2505872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a2353bc92b1076a3bd28edce9b8a048a2b45096f81eaec2202ab6a9de5f29e. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:35:55Z), 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/ITX4M2500058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd07255a98d8f286414a2eb9bf5ba87abb96ce65bee6809abb252288fae3783. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:25:12Z), 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/ITX4M2500061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f69483ee66fca57dabf9cf785eaf39484862f61302db8af7139db08adf76856. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/GBENT1752643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e99bd493a25a1aeeb48c8f24dbfb5653e833749374532c1fd46c87bcc1efd6. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/ITX4M2500093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5d9e82079d2a9759031ca811a4bdda8900890e55eaa68d8ab3801780bc1333. 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/US2252545001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6ac98970f4a85008ad56c8c3124b431f202bfc851cf46b4527c7739b797394. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBENT1752649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19677146ce1ff998502fae19a934eb8e9d4fa6db07c4351a7ea9c29e9dd5ebc. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:05:03Z), 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/GBKQU2544751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a502f76035ccdd22401c42391967003552d3bc5b3d032363b952a033b75048e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/US83Z2535397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce120fe51f01ce7b9916f566b229fd2f5bd07bdfb3a0bc1268e95939fac3670. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/GBENT1752658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d086a6996c384a978d938c479cdecce5dc6d264ae05c52d2f1be3ccb2884883. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/GBKQU2568547.