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 0x0edf7980e43acc25706d30d2172d6c056bf091ccba49ab7f249bc23f82ec0c8e. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2dd8c25f-005a-4199-abcf-b4492928b5e2.json and https://artists.proofprofile.net/proofs/artist/2dd8c25f-005a-4199-abcf-b4492928b5e2.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 → 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 0x7618a8c90db1ee2914e5f75055dcc0548460ffcafbc228fc26cf5524e8421554. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZHNC2592871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe858389733b9b41f468795164a9956d517c16d10d5c20473e6e76ee051021be. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZNWW2509185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed3206c494cf27e5b541b66f54a8831478fda5da7e0b69dba9a3503769800fa. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHNC2594451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ba4d3f3516ce2812cb55546220f253e8623041086dfa8c0f58cb891884fa74. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZK6Q2593251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3135edbe7359cdfbc3c2e23f946b6edb1d62d3c365946e9e153488d56b8fdd2f. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZK6H2538251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834fd063eb0ed20aaf01ccd08b690d2967778402429656c1e90b6ce3a43cca91. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:43:44Z), 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/QZK6Q2570575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44876d6f5049e78c66b439db1612f71fade9849bbecb84d84256f2796a2d9a84. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:36:43Z), 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/QZNWY2578656.