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 0x06cbee772503ab1b5ab3ced98470606bc53c12ef5fb49f1029e1fbffe660eee1. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2031e07f-e294-4bc6-b215-79fcfe248175.json and https://artists.proofprofile.net/proofs/artist/2031e07f-e294-4bc6-b215-79fcfe248175.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 0x30f4395e55e7bf9851d4438ad72a0c14cb98a97d568aed534a6619bd5b805f64. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:59:06Z), 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/MYIT11800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4321b2089628ff2585e9dd097755fca178cdd79d10cf1cae314c22c95d089743. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/MYIT11800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431e751e1b2db8e81913a3cc4e41e701fe43085866ab2b9fa00a9d0b18ed6d0a. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/MYIT11800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3e219f6df9427f7c528d6a83cce2282efe8f78be133c4ce100fbe0cfe62c14. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/MYIT11800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034a2bccc6394b3e7a41590cb3fd3c3f58d2fe0f65a8ba10bce8a8f4b91a19c0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/MYIT11800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046ddf20ee67075de0f69a6fe9093187643ca2e52bc179b3da82d6f02637582c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/MYIT11800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaebc971f98747e2af6cc8bb6ff52e4aace4dcf1541e08c4b24511184dfc6443. 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/MYIT12400140.