1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xeae6335a56abd460565d6d0c5932886f003c23f5fa1139d9b3441afd6b9183f5. Chain 2 (Bitcoin): anchored in block 953958 (2026-06-16T14:52:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/269a75d9-afe1-4de6-b714-ae9eb73b535a.json and https://artists.proofprofile.net/proofs/artist/269a75d9-afe1-4de6-b714-ae9eb73b535a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 → block OTSBitcoinBlock must exist at that height 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 0x68733353dd9bc511ce385f21274cc7c99419d03853379e23fb9356ca0b2dc5a1. 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/QZK6P2559513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9b765521d8f914a8ea7d4b1d4270141ce869de8b521aafec10597b57a241aa. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:24:53Z), 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/QZNWY2562618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd5f088252bc7ad8284ead2a73ee69fe76d17da71347c980a67b28fb3bebd56. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZNWY2562619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42676ceedcdd7feb45e4867e721aa739211f8be3410d72d791bcd315d96022e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:49:47Z), 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/QZNWY2562620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2d530b87572e294d5523285615f1c09f39a70d04201910f93e22f8325212f3. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZNWY2562621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2f56c818b93dca72207595ab2b4a65b0e48124af61cb241e4d4b3d38e69820. 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/QZZ7W2567322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7baa3d9260835ceede1dcd3fb1703dbc481c245c5672a01f6338e36fff906cfb. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QT6E52582102.