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 0x1ae8ca0ec70bca567ab9af4862a9c0a54650317444451e816b3a008b56e0c8d1. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f8b2227-e56c-4429-b1bc-3d977381acb0.json and https://artists.proofprofile.net/proofs/artist/6f8b2227-e56c-4429-b1bc-3d977381acb0.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 0x96e03bdf01715d26d728a8f25cf4e17136831306447c91f7b2d34f281a9a0fc3. 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/UKXN22402912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27888e7a9c1bb4e89e6cc964fdb14649e54de2c7ef0b7f687f9e71a93f48a44. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:10:38Z), 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/UKXN22402913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a972236097fe299c787de70491780b30411224ffec274e54b9b1913589ee1b0. 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/UKXN22402914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa301bf3588718806000c039d3031e9919477916f36435071a8fb6a3ae8f5e862. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:16:10Z), 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/UKXN22402915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd499676a48bf41bd5c8350a292268d625c40daf4de141232d56e914b1a98c3. 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/UKXN22402916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2a61851da2dea05a44467dc81ae4f6b5a9792bec52fef0728b107fcf678e94. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:53:24Z), 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/UKXN22402918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca3de37394f99fd7437f30873d18407fe80401171c2c2f7940244fe3a2fabb6. 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/UKXN22471343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c396e2d927ae6eabde39152d2e88c77e6f68f21cfa9849ddd96fab98215e06. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:59:20Z), 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/UKXN22471345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7274d856fc52a656bd9d8a583b7961f63cc54d1f7af74110ffca1f956ff73a1d. 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/UKXN22471346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583da0529412c02f1b61ccb6a79827c50a6b9ce0f9b9f5fe97e1f43609891e48. 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/UKXN22471347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a8fb4588f5852417161e136d022dd9d0f2d6488fcdbad2c8ccc9408b7842df. 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/UKXN22471348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29a1c5f24a967db98c51692a4cbcac6f72e8df5e928758d7b8b2d9b4c864878. 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/UKXN22471349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af0c08b85fd93da3a988344ea1731486e357730e2390816543640e4f79b0b8f. 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/GBMA22440312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf760147052863d1a7e2358bca041d22af034e8d5c18f8cd5cfdaf656abc3db6a. 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/GBMA22440313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c6ba6ac69d29dd9d3f0fac1af732c72167514df1f2a04ba9f355dba9e197aa. 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/GBMA22440317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2e2e0ceaa209d76d3b2a5e502466596007228d555add02a32782ecdfa43e6e. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/GBMA22440318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad23c6e6a6798b92e9e65e4797781f99d77f57e7e3ae20f496d53ab05203ae8. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/GX53U2347028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842053e212bbaaee47aa3fb102c0166d9bb3819855f592058217e8998e17e454. 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/GX53U2347029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb9eb18cd99293aae94500e500b8f58d6c67988e5a8a7b6b48b76dbde896967. 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/GX53U2347030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35cd95e58ca467997f97eefbd1aa312fe848b49acbaad033d766bb80dd732b6e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GX53U2347031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0ad60120fa67a92a34c14d960fb26ec1b58529cc6af4cfea74e252763944a8. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/GX53U2347032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53aba7e35248920a12310b2d9ee22213bb6ed7f7b17ffb88034ac7a99eacc59. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GX53U2347033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccbafbf589a43720be06bf8776816ad0bfe9dc8e17f571e3a0782b59b37387d8. 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/GX53U2347034.