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 0xc1feaddd5cb08d34298bd7e97ae3c215498026d5466442152fee15da5c18b6e9. 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/11706043-544a-45c8-ac32-259d01f7316c.json and https://artists.proofprofile.net/proofs/artist/11706043-544a-45c8-ac32-259d01f7316c.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 0xe4008d4a33175bb10bf57dd01178c23ef48f39ae8c488d5f764b3fc0a86d29ff. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:26:12Z), 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/USJ3V1196360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696268ebcb3ebe1181ffd7987fa892ed870bbd31ff04debdecb4def126e887db. 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/USJ3V1196361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055b4a068c51ba68aaa6058f3e8f79cd17e52b6b3a2fb0d9a967f604b2717aec. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USJ3V1196363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e7656693a0d01e1c5b4bef39f5d3cbf9e04039be1527577c62bb3947d54191. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:15:44Z), 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/USJ3V1196364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3dfc494aa2befd345ef3861a034898547d005e3d2d8610dcbdc8ce456059e7. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:45:08Z), 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/USJ3V1196369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2e0512855f43636473416ccf2a556932dd5a80804dcaf9d204ee0cb9cb7c68. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:56:44Z), 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/GBSMU3592478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f722d351beadf8d8926bcbbf57e3ea1a761a6cebb58ef00ba58312b6d31317c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBSMU3592488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db0329e923f8c5a3272bcba0acb5f568f8b45bd6fdebfbb044966afaa65eb34. 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/GBSMU3534699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1747cf52f2ad58a5cb5094f541422eb6b1c84f8b711b846575a99ce9f8b16fb0. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/GBSMU3534700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5127dde71ddad384f46f43061dff2187ea268390e19c00729f567bd0304be205. 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/GBSMU3534702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f153c5c9198168c49c8ac16ebed16428c35466c0d07333de4ba6ff87763e6c. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:19:30Z), 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/GBSMU3534704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010b57f4c292fcbbc9ace1550b33a12a01f23654d57868a1916c6f398fd39e5a. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GBSMU3534706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47522586c340f2b9fc9b5c918506b0085d61f25ce68ae7f9d881e38b5f1fa461. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:28:07Z), 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/GBSMU3534708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0d8e5055283c60e777254e1af573755383724ed93e8b5eee4f5fcb65f21a8e. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:22:39Z), 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/GBSMU3534709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0399f424b2acccf3000a7aa1159d3c813f29993b4742b31d90f5d644670194ed. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/GBSMU3534711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ba7568e577b7c36ceb1e09426375f9afa0833a55347a36a314d8f77a25e4a0. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USJ3V2433313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b555981472adf8fe3fa68ce95f374b29c60016edbff338718f7337193011a8. 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/USJ3V2433314.