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 0xbdc3694d0357ce287d179698839ece094828f3cb4e6521efa0565d46b513b886. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/206ba7a6-2645-41e3-93bd-b5547f68b2ac.json and https://artists.proofprofile.net/proofs/artist/206ba7a6-2645-41e3-93bd-b5547f68b2ac.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 0xc7cb48ea26a1ee2abdbf9843aba9944fd219aa21c675c4aa588a3dbea5c89fa6. 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/GBX722100470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c58d68ed33e9f865457bd9f4403cb98cc5999ef62259297cb874e5eff6e87e0. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/GBX722200524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5981b8a6ff77752f3965614ce5083db3739567bafeb5d293a5165ef0a66891a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBX722200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a36ce4b50278eb0e0517150ecea3bb84384e2f61359352e117eadd70a9d12ac. 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/GB2DY2300167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb01ba41181b820ec477b9dfbbabbe880a30f6480415f2efbe926d9149ab3b2. 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/QM7282349267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e42c925f63fa7a791c18c5a695f71cdef274b1b8ec6cdd5f75afdc142dd89c2. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/US38Y2419834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961c0f297ed4bd760a6464b96d694f55b37eca97a787cca411f9236ad117c55e. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/US38Y2424634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524fd565d84633dcae9ec81cbf6d542ca33a05290ec879c87ac265fb54c04b66. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/US38Y2424635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e42c925f63fa7a791c18c5a695f71cdef274b1b8ec6cdd5f75afdc142dd89c2. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:24:50Z), 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/US38Y2419834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9a62814f6126a41be01974348bb7b3144fa031d47b2896c127764e40a4bf0c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:56:38Z), 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/US38Y2424638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeee2f119f316f0e4c4ee6dbbf3a111ec12474f5fe4b3a779cee9719fd69e1e2. 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/US38Y2424639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e860088343a90370cca74420858a08d1b01812f4060cd6bc41959133fcbac6. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/US38Y2424640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3199c28de2871f2e6b10e51ae205ee50477a5df0c5b808691d91adb70d94d7c0. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/US38Y2424641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d7b6c29a462ece857805dd12123fb520a6383f96c3b14e4a34a71c3901420d. 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/US38Y2424643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01b60de02da3088b3746ca6129d76f5855f69067621a1d8e2287a2a9204b7c7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBMA22075541.