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 0x3ff65fa7a0cf21a71aa936084d5c83ca82b712f4f2fb03a7cc27dae4e98ebe73. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/540b8c43-d2f2-4466-ade8-6b5b91f3ced2.json and https://artists.proofprofile.net/proofs/artist/540b8c43-d2f2-4466-ade8-6b5b91f3ced2.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 0x7477be588748a8a23bc3888aaa569c2bf7b20937c892ed9e435e352f92a711e1. 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/ART0G2001606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7477be588748a8a23bc3888aaa569c2bf7b20937c892ed9e435e352f92a711e1. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/ART0G2001606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6a3bb9134ff83bfa4f85549d4c064128cb07a376e9a592bbb5954d601a76b1. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ART0G2004530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6a3bb9134ff83bfa4f85549d4c064128cb07a376e9a592bbb5954d601a76b1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:55:20Z), 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/ART0G2004530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47db8a74fa659475a8314de6f10f379e894f18c76b8b5426191823d78652fdc1. 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/ARIXB2101119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47db8a74fa659475a8314de6f10f379e894f18c76b8b5426191823d78652fdc1. 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/ARIXB2101119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4b77bf027103ab594b5b1b71e748d3e2ee740e635266b27c11c7a2fda3687a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/ARIXB2104395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e02e53f1f9ab4fa1a85e5f11c910a88753bbf3db005cdd48979b9d258706cd. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ARIXB2200538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8322e4e6acf0e3c38aa3940cb98f673156a5e6e480d1de95a4c80fcfbccd3e05. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ARIXB2312647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8322e4e6acf0e3c38aa3940cb98f673156a5e6e480d1de95a4c80fcfbccd3e05. 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/ARIXB2312647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fc800c3c69377371c200df9549791868cab109441957cb2e91b822884a88a9. 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/ARIXB2400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fc800c3c69377371c200df9549791868cab109441957cb2e91b822884a88a9. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:25:16Z), 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/ARIXB2400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a9743325737aa71d5c7dec3744bd528404efe6fb98bc053a67126039987d62. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:42:55Z), 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/ARIXB2403683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a9743325737aa71d5c7dec3744bd528404efe6fb98bc053a67126039987d62. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/ARIXB2403683.