1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0xa465e36dbcbff0386d26ab58df780962e64197c7da6d55a6553937eb8e939532. 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/f353685b-ab21-4e03-81e2-e32fe02eaed6.json and https://artists.proofprofile.net/proofs/artist/f353685b-ab21-4e03-81e2-e32fe02eaed6.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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x0aec1baf15e35d5b30d783c24c315a2b508b6e2e908bc354bbec369c1cf28473. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:54:33Z), 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/QZMEN2344943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86aff298d64c8d50353aeb4988b01e0f065970e11ac2c8ced82a883b0a882082. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:49:48Z), 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/QZMEN2344944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b76316e004fd0e787b533124282585c2765c9d27f99a393e9393b87cae220f9. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZZ7K2495827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bf0b8a393eba49ed05c3c71e72d1d70abfc85884420a6e6fa6d252fe6e16fe. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZMEP2536335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f16f79a04ea87dec47e18ed51fd1fc17707665e91e0b542546668ffe0940170. 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/QZMEP2536336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab044c38b0efadba4e15fac00e069f7c0c96db2c47a9ac2a140c2a6c1f13029. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZMEP2536337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93ee9802338f8ffca99d4878daf526fc3d1540473d4d5ab41e32be599f54040. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZMEP2536338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0562b88f209d3447505afd770142a3b3aedea6a237ed75c329434c94c9e2ce2c. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZMEP2536339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26099e64d8e2ee7a1e306a73736efed4bd988a358b18a77a79d6ea05688636c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:12:42Z), 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/QZMEP2536340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42510b3da6edc93a14a8b33de3158ad28a55fd494bd7ad1bf313ff796bdbcf5c. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZMEP2536341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6c73d54c4fd5368cfe84aa5d4daecc14615a2e78f2906918177360ed7e0b92. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T17:16:10Z), 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/QZMEP2536343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6318f8b2f7c31d059cfd2686b8de8b0854e74f24ae5e0613ddcab6bf5564c8. 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/QZMEP2536344.