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 0xf6b085212eb0fb103f2be07df2f18983b9ee9cbc213ccbf34360997c585e6f11. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/afeaa1fe-d98c-4233-aa80-97433230785e.json and https://artists.proofprofile.net/proofs/artist/afeaa1fe-d98c-4233-aa80-97433230785e.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 0x9be2b6cdaa163209f32e5023fd6a4077802cbe6b9dd2eb84824451c51ac8f9de. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCAFF2051294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb11bcdd38a08dba86638ca14930893e2b19a90ce69e93b19f755d2f782dad21. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAGC2269435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816f62cac2f61d34d81df11d2ad727e5143e4a19a0770380b0fc3a10ee05f567. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GX53U2448802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af76b859ffc835888acadeca2f88c1d838965d05e5f1294d2d1a8ca509e6a5b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GX53U2448795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba459dc3aab3452b6933b6d41c8fc48965f909bd8d366ac97d38d24b9a9918f6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GX53U2448797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14c7275daa1487424f746e24909c67621d26c572d0f1370b0bf2360ebf9b685. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GX53U2448801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8a63a5a0d16cc5a30383a7184e9dd170a0a7807212b41ed7c82c08ee2cbe00. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GX3Q92356421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c046cef99bcacd82afd6cf48bf30d56daf3295f1b16c469d354cfe557e79ebe. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T13:47:15Z), 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/GX53U2448800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc025a067c7879379524ebc8b26b277c48dc4f88db884555eafbd963232dd52f3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GX53U2448799.