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 0x2c83adefe2c53d63b658a092ab0129010f2a9f3794edde36d3c592f0333e8438. 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/85bf3121-8687-4b38-be6b-48fcb5d5b121.json and https://artists.proofprofile.net/proofs/artist/85bf3121-8687-4b38-be6b-48fcb5d5b121.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 0x50d81e9f2491adcf4010c7995b5dbe2bc048315a9b4339107f79d277ca1d19dd. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:10:42Z), 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/TCACA1427471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ed5cad3b598d470b9e5569dcf04bb7a0085c4046afdaf73ee08b7fa0c382b9. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:18:37Z), 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/TCACE1545458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ebced1f99538741900ed7a229253e169aaddc50815939fe40ef8325cfdad97. Chain 2 (Bitcoin): anchored in block 957674 (2026-07-12T07:50:41Z), 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/US3DF1710689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4d86a9b487cd59f806f51479e402cce7fc51db9339a09d30af7b65d86ed876. 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/TCACU1689705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735bc4a813ee958b3a23002acea3fc2b15f8569852d6edb3f9d4ceba7b5a127b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/US3DF1710696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc98e4e8e3031e644b498a750aef094637af5d0a1c146ab4cfec9c371d9ef93. 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/US3DF1710697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57abd790e1ed9ef9c70a05e4920414927242af7c058cd9f9bdf913e60f52c04f. 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/GBKPL1803403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691c432e4e52aa0e84d4d32ea90acac12d7824003ad194ba3d00c0ad450b2617. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/GBKPL1899167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba5c9e0d942019c239490b62380404d331856743a9fcb45b0ee644dc2783402. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:19:14Z), 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/GBKPL1803398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7625dc9615475ecab11b8226be1fc08e02e0dcdca13690f648a7cf3793991986. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:04:39Z), 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/GBKPL1899168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8598fac712471f5b04a6976947cc3e138f6e555e802f8115a9320219b52c809d. 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/GBKPL1803401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73b935b8f9bde2a803c6f36a4555d7d3b50dfc50c2867724d172f9c21c726c3. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/GBKPL1945880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26366d8c8ce79e0ba896fdaacb7c4dc76d0e98328b3055664c0f85031ada6f8. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBKPL1934883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a893b1eea06795efbed26fbe8eca016ba2a649b1643dc41eddd0eec45a61849. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:55:22Z), 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/GBKPL1945879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb69a91c82e1d3f43b3d3c49dbbef5be552acb8b6ab8b1530d337b929abf478. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:26:52Z), 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/GBKPL1945876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74f8d4caf101568223ffd540d46caa2905263f79cc52d8cae07549425997b92. 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/US3DF2025361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b83000627544c0cce454631560935fb197edd61bc7ffdb838301caca779ad2. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/US3DF2025295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f6444f1344a9428f7867e0189c3bd4e86e293060a9768bc90dcd6e614c1eba. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBKPL1968466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0899cb346b98a14e38a3aaa432218ce59b379ed09d358fdba47b6e993511f9b3. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/QZGLS2059865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fe0e830a123f6d12e8bcb79e9c79ee3a1cecf15162ad4cf73910c1e530b800. 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/TCAFN2170341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde052f3c42718f961a58a29476f589edbcd021ca24f98ab26258d07c5e39ec6f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:48:57Z), 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/QZS652145558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1475ffecc479aa0690b5e6814aaff218eac89f087fd246aa07514279818672ef. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USANG2155315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50ea74626b89a706576c1bcad4ab3c1228e40845ff18125e9f0e667f286fba5. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZS662127877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92016913e8ebd7c9c8a5a4cb982f53ea8d7b0acab98382a78cdd25fc2b415959. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZZ7W2453532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebb8a8b9d6a720ec75e124d5d1d18c4b2a612b2e8370f28d1fc1bcb17e71e60. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZDA62543489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f329d04c22aa2dbe4661de7a3d9b038d2c31ab88b2609f931ee65333f6dc20. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZDA62543490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92016913e8ebd7c9c8a5a4cb982f53ea8d7b0acab98382a78cdd25fc2b415959. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZZ7W2453532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510927cbb59afc516dc4d2f129cbe48e2e84cfc02cd08dd9a9165b128053e656. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZHN82504224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebb8a8b9d6a720ec75e124d5d1d18c4b2a612b2e8370f28d1fc1bcb17e71e60. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZDA62543489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f329d04c22aa2dbe4661de7a3d9b038d2c31ab88b2609f931ee65333f6dc20. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZDA62543490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92016913e8ebd7c9c8a5a4cb982f53ea8d7b0acab98382a78cdd25fc2b415959. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/QZZ7W2453532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f329d04c22aa2dbe4661de7a3d9b038d2c31ab88b2609f931ee65333f6dc20. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZDA62543490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92016913e8ebd7c9c8a5a4cb982f53ea8d7b0acab98382a78cdd25fc2b415959. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZZ7W2453532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebb8a8b9d6a720ec75e124d5d1d18c4b2a612b2e8370f28d1fc1bcb17e71e60. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZDA62543489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af79b79bb1640858763593e0b258f6a9962aec48c56654f2671efe97f36b5d3. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZK6P2583847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366452e9dc1d252aa6b286321bf6db9c57dd75789468a79020b7d1f05e125c18. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6P2583848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510927cbb59afc516dc4d2f129cbe48e2e84cfc02cd08dd9a9165b128053e656. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZHN82504224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44fd6998ff8ed0712133c74d8a5cb594bb6a0b6eadc32e00b626acbfb53aec4. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZK6P2583850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a288dcb3ef1b86538ec7b2c532a44ba4fbfe245ab202ece5bf2a88a30123a13. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:38:58Z), 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/QZK6P2583851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd5661fa9787cb64c362ac28cfa38596eb1e0bc32b97fa7c09da83966b0a416. 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/QZK6P2583852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f329d04c22aa2dbe4661de7a3d9b038d2c31ab88b2609f931ee65333f6dc20. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZDA62543490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0c89088ba053316f9f6e69959d54c50318f7fe15a131a0a8131be97fffd6e4. 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/QZK6P2583853.