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 0xb610bfd9275a548e514abb8f4291d9d6913b6771d9c32d1d1b724e1cc334096f. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c3d4e46-28cb-4048-acf2-1137e39c90d0.json and https://artists.proofprofile.net/proofs/artist/5c3d4e46-28cb-4048-acf2-1137e39c90d0.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 0xa774147534ed683ed756d7ae96bbfb2151b3b496134186c556c193e22472960b. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:01:15Z), 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/SE6I32446283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7793ffbee1ca273f1d2755fafbe21ec9b53091e3a96be25735af758f87127d0. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/SE6QE2499570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2870ccebe1379055e4408c08c78d2a718d5c0bf515d3721c756ce021d4213b0b. 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/SE6SA2419126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620ea39222836da901cc6dcb34a05eaabaaf04cbfebd0ae00fa72522519ec084. 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/SE6SA2419127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cff0cba50dd6dd6b36305bac9e41e50759a0f942206312cc5235d3f343d52c9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SE6SA2419128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca55cd635c117a8ce0c75f69bccf25102685f058c9da110417452d2295c912b5. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:03:24Z), 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/SE6SA2419130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfbbcca4b17b54b2227e323a347da0622d4d928c71912ead1ca7d27f31eb6c8d. 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/SE6SA2419131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3314d23a14e40673ab563d94e6e3eb68a59dc8bc59ab7cb330465eb01c8297ac. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZK6Q2458428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81274244755700f74160898639811bb6957ad8f66f1bebef68165168ea077b1d. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/SE6SA2478027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612ce2dbb93efc84694b9990dbe695d20c7b68228582173cb81192caca81538f. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:51:29Z), 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/SE6SA2478028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4094489545ff6cee75f6ede98cd1734496085376e29685cde8c48b6651188b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE6SA2478029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767952cb8b5566a1de953b9449b4f3a368e4bd17bf08d18ab46e2e400a501798. 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/SE6SA2478030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41155fa6adf45233c1aff4e9387fa0344a84969732335f39bc0c8738fb7da65d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE6SA2478031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1baa0b8e1be9faeaf82302091ade154854502c37ea5c15daf080e18bc8002ace. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/SE6XX2530821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e0764ebd677ec591d56fee07afebfb82077871f3ed42c739230301df7492e6. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT3F32589781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258ebbea739575fd77aacd37f818915e4d7b0c8d5d6d7ae42debeab4a744b508. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:18:21Z), 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/QT3F32589782.