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 0x0d70161d6ee0280053daf3f87d852cc1fde01ab7935db78aa9edde47931d2939. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb674581-8760-4099-b009-462860e9b1d4.json and https://artists.proofprofile.net/proofs/artist/eb674581-8760-4099-b009-462860e9b1d4.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 0x3fa240435b9692a001ab1d503ab39d038d202a0e77a571c564042c0934af706a. 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/CZA590800801.
Muž, který se podobá odvrácené straně Měsíce
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a6c84f797ca2e1bf9d3342d489bb15758023ec08c2d3e8fafbe468cbfda077. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/CZE561404501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce93f5a4274a792941a7695e9ea9ddbc718f9a048f9701e0489fbac2bfb73c07. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:26:24Z), 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/CZE561404503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcf6ebb49c829ffdebfe59319e3e2566746790bbc6b585019b079cfdc9c15e3. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:19:03Z), 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/CZE561404504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc8f5986e202b1c598c291ad9a3705e3a32ca3e5d91e1de86d310b811ad48d1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CZE562001205.