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 0x60c41ba7a439d8dddbc951dfa200c2bb6ec02023f179a0dcfcdc5188779d5a20. 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/76c1abe7-83bf-4963-9827-3a666d56419e.json and https://artists.proofprofile.net/proofs/artist/76c1abe7-83bf-4963-9827-3a666d56419e.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 0x6d35711c600b95103d6ccec54ef52a088e5c2372bd5a432867404b455c5b78da. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLT2H2400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e180fe90212ebc988f44f3c76ff6047bac3bf8fcdafe0611146a31ac6289cb5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLT2H2400803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999de49943c2e825f9d8a78637d020c6f51eeb6afd6febad6836113dcb94cf7b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLT2H2400234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca62d499e7e841607fe95a2306f4702774d1fee42b1e351f8e9068ec01fc39b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA062307905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297fac3ff5fae2926cb89e9a4dd520cdea396a13a688ea339d2980d58ab6fd7e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLT2H2400583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca4a046fad3cce9f5683ce822f8a70850bec03160b2f8755e1cbe755d0fc5aa. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLT2H2500168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0dc21af8ef5485b2eb4f319b5607d959852282b2a0493e5b8ee9cd4cea1c7a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLT2H2500334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3a83571559a036019e87917c2a9475351442c4dfd7a41f75560c6b93172e82. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SEBGA2500386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1395354c35db13d4a09fcbb399d5d68aa52672751b1f95fb639722c6455733f5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SEBGA2500387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c4cf7a3660db21b7c9eae94627baab5a720bece8439a258a08d93bbc98115b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SEBGA2500388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8d862f4cbc24ed61f14edf862e719353d0703332fa7b82fc7efcd5cbc13966. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLT2H2500125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b64d014b4cf02f749673e46a4f9d680224e6aec6b6061d814b39ee250041d5c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLT2H2500064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e68d9898cee722ce851893a9da36afbe0e29c6347a5b325d2cea2766d84389e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLT2H2401572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9088ce072af5e3a145c8ddded94134d5842d8038a8570d8cf403b34606b81874. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLT2H2401496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7819aff94402e173ceb02f1915f6dcfa0d9d9cc53d33323e525b9f84dc881c1c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLT2H2401476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7339ffedd8690c7b7e7c0812650b9a5957389d7d5d389d88615c74d3e8e555. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE3AA2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59759bfe85aaa725e325b22fe0cf4c74e178967b3cb1d02046dfa14d1129a8d4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLT2H2401157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84f38b14870568d365aedd565d3a97f2cd97f791be5418ebe8317605a6ca020. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLT2H2401085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd9e5fbba447fb722f7886b354e887cd5edc33ebef718cf057f205a2f29f122. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLT2H2400728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8f8b6f705f321e47eb1220d8fd74548cc3f6143f2916050864af8eeb68e4f7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLT2H2400443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3925397fabc181a5e1b20de5192c3a80310e6614ecea38bf5364a8191b5bc2a0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLT2H2301151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9e6845e8cf243df2d1f090ac368e836bd83381735e109393260c2d98232a89. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GX8KD2384630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906891a3d951385025bba7ceabd5e6912d3612e18d91ee0e7e26c4c995335883. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DK4YA2304001.