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 0x888311dd17fb3562046cdffb0c421f10ddab0628f594d7a84f46f76a2e6c8e23. Chain 2 (Bitcoin): anchored in block 953954 (2026-06-16T14:18:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/25eb072f-05a7-4763-8af9-293e56b3f64b.json and https://artists.proofprofile.net/proofs/artist/25eb072f-05a7-4763-8af9-293e56b3f64b.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 0x152e839c9034a6e9286c0621cedf113a21c8429e93798006019f92ec08f844bf. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:56:56Z), 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/QT65W2542370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109d12dec510fca58df9a0776cec5d0b491c860f299e28c97031a8cf53fa9484. 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/QZZ7Q2505180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0e8cdf32b8999a40704902764b028fae25c520416900648e3b7483823317b7. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZZ7Q2505181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a603067b4f4292cb3ddc8c9101bcbee0861ae5bb8ee8532907557054390058. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZZ7Q2505183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded7906531bd1c36dd6dc4719930ceaa1cfca8071b9295c82e6d87d65877cfd4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:21:57Z), 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/QT3EY2525577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9358a248769ad542a995fa2c3b3c474f3dece711d92a549fd22d9d62eb5032. 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/QT65Y2553155.