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 0xa414173554cc3a5da9d7d8ece28b736e5e0afe32e5a80dbe19fc4e1381350181. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e1deea9-bd89-4b82-a542-75cea5d9aed3.json and https://artists.proofprofile.net/proofs/artist/4e1deea9-bd89-4b82-a542-75cea5d9aed3.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 0x64bb8ededa9d1753db9e1c10da35cc52e93013376c0b9f41a296c13fb41ca9ff. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:22:47Z), 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/USJ3V1465865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d66f0e6dbff749def0c08fa128e803e06f1b37402edc7a9fb64f783ae56c8f4. Chain 2 (Bitcoin): anchored in block 957611 (2026-07-11T21:33:50Z), 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/USJ3V1843593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ec51683fcefcd077b4bef5ac2bd2ff6048d495423ef9e3fef989812b38c840. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USJ3V1855985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f671f53801ada0cbb9eddaea46fddde881a9381463e953106f5707c246c3fd7. 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/USL4R1932644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6ca12b3f3937faae4f1ef65d5019163c92ae866847073acc92b8064b2e259d. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:56:54Z), 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/USY242463433.