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 0x345fe40d3c27e9c537a297753082ac315adbed6986f27628c8f176d1d2a678b8. 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/d942615e-4c50-473f-89fe-a516fbf4e02e.json and https://artists.proofprofile.net/proofs/artist/d942615e-4c50-473f-89fe-a516fbf4e02e.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 0xc51d276ab051f5f2fd2e5f1e2427003efbecc201c2099d624c7a919d22f28ce1. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:22:45Z), 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/AEA2Z2404669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4060b7aa3b46987614b8d7f4ea12159da7bdc9397b0a383fa11a2069ca98681e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:12:16Z), 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/RUA1D2479655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e16a6eaf925f7c334b6bd26cc6ca1b1e65b10a28839df0d4e353bb1b621c81. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/RUA1D2479656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8e06e34920f50b7882c5b53d4dbe0eaad94bfb5f974a75665abf7dda6af902. 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/RUAGT2437095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a675eac2ab0d550dd2a43f3663281d0e9da7d9fd6cdabb9511e786eb441c9b4. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/RUAGT2491330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37623e6243dfb0d1e6194e22c2bc3103996a0e06b63fc74f9ac30dd8758863b5. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/RUAGT2491331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4b737ab9edbebc6070b069c77c07ecfe02677a3b4ed84dc6e38ffbde7cdedb. 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/RUAGT2491333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60dc3f6239abe027308ec0876751b011fe35eacc89f3a66aef672d43f5c51abf. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/RUAGT2491334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ccd210fa09aa3067e4116f9a1757ec3921810acfaefded61414f57df52981c. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/RUA1D2508641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e605f9f8996b8b9acbf24e4c0d42d63376dad73e4a122e794fa3532bdcc12d4. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/RUA1D2582655.