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 0xa82e3c0c815a63a04dacab0d7617d1177d2da6b5b5691f4756d875475e29284f. 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/edb27526-1ba4-4a16-ac75-969094b040c2.json and https://artists.proofprofile.net/proofs/artist/edb27526-1ba4-4a16-ac75-969094b040c2.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 0x33831446ce2ccceffbb04f8a02a3b218108df74acb5cd3136eac216037191783. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:08:49Z), 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/QMPU51273789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e2189c94e0a95c38984a779091517df87b7196334269f11cbeb29d774a2d44. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMPU51273792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e79128f03c4787eef1ac8ba30cc8d121c0b28c9eaa70be1af8526bf2aebf88. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMPU51273793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ea72e335910e89747232247475bd0e8b8bacc1c9fdb85d52e213aedc5d77fe. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:09:07Z), 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/QMPU51273794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e91ea72e8fdf28ba7ceb5cf16096dcdbbeff681febd7a0f3208db2824e5f38. 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/QMPU51273795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1f8beb0c6032ac4d6c3f9472c2fe624c57d1b8aa7e16ba210d5978a979422a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:26:35Z), 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/QMPU51273798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a71c828d2790c27ff942350b1b57f0267b93ed68766d408e696caef104db808. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/UABI11600030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd806ef4cac17d8b68f63dda0487cb5634eeedb012d27cbecfab2d3df1834fb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UABI11600032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3cab406bf534553dc63f176bdec4ec2c4e1e5971a35bf47a4a77d218feb55fc. 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/UABI11700167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb79b75a977b2e1da67ea2798d66472e092497c777e26b84a1a4da1ae8f89968. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/UABI11800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b22dfd144470c2c9f5a45ba9560fe4776733c7c9c229182b47fcabceea3a89. 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/UABI11800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe9670399746524b754182aa75fe4c536f9191dea488a9c50401e8b21b59b47. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UABI11800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34f1a8fab8f9aba9665d96d7f2913bf4d73cbaef233110418a16d2ec51fbbec. 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/UABI11800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1c384f24ff6fa0aa5bb331981c9f9742fbc7057deca0d8301223c56e3b7d30. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/UABI11800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33a3f59ee258d0828fd3ef5e98f9aa60e758e2fd3428dae7853838dc8860d8b. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:13:46Z), 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/UABI11800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6f3abb9cd3fd0f47439d9b7fa0cf3bf2f4e6b37a09152a1f3b124674090030. 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/UABI11800096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35266fb051dc6447c6f8e4b4913280ceb5ae6ad8b152b0f471519ec51247f4d3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/UABI11900064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b212130df1d192f6f4430f1ca84871b9d768742bbf8cc1906d3911e1afd91f. 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/FRX202106370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb219fcdf19784163fc8072cce59b275709ba540563ddfac1343f8f3192e56fa9. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:22:35Z), 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/FRX202106367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbea32e1b4c15e0698558e5a9a2dc64550e0c0329373685f6a9a95bd4d6331cc. 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/FRX202106375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41b8d8a61e3e1bffa7a959b9db7c98c22484e600e4a37f93e5c75b3e884e72a. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/FRX202106376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54faa8eac371ec8be5d1f320cac9d5aa75dd0e0130fda4a1077032f10b1619e. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:31:45Z), 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/DGA062332120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18680e6f1db426f10f2334fa50ff498c141936d4b1a8ac51072ae8b5b72dae4c. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/DGA062332123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9b56ea1bb5b8a87e14555bb22bfa696387068c9cbb4422aaa7938d5a71a54b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA062332125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6038d24d3b7832f8682dae1c34e11083f25ca13b758a543649eae0e8834827d1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DGA062332126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab0295b569d74804e8235ae9e00ad98dcfdbaf4c84482d8ddc62ff764aa860b. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/DGA062332127.