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 0x2e9a59ed519e933749775a011a490e1249b32286a7406241795fd3d5b255342b. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bcbf96be-d682-43a3-9494-d064dc8e35fa.json and https://artists.proofprofile.net/proofs/artist/bcbf96be-d682-43a3-9494-d064dc8e35fa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x78b04491ba7adf9a5f2ca785e44951a93e9fcc7c6c88d2940f13a76dd1a60f01. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:19:14Z), 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/ITO102264423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0b9a09094c69ac156b92505285094720f4be3cdca303b26be7ade137ddd261. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ITO102264424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735a866e40d846404cbcdc6b35b47581dc3e2e259dac227fa750e0fcc4db85de. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/ITO102264425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7314bf34295a0110f5da632a3b399ec4ce5718a226064d2d4d619b54339c7381. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ITO102264426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16ffc9180c23ed7c1d72a0616d3587541029a4a795be3bbd2aa0f71d7ef3f09. 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/ITO102264427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ec1b4065e3801d652c91d87f97f56184d02cebc6cfb64a64d8e743556834b4. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:55:09Z), 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/ITO102264428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad523076042ab2f36204f1c67654293051590666114b89ad19fdabf41e23061a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ITO102264429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b042f616fe7c5b80a0a532de7e1edd56cf5c2ba20e7f1c89413811a708708b. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/ITO102264430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28da734a449b62d1ea3289a5db254a2bb85a35bf31b1b55f1eec4144df9d01b8. 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/ITO102264431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7292d9d302c35ef444c386b55b23ec375b63ccc7e47b038bd227d16df0663eaf. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ITO102264432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c04cf5dc1ad3970d9ce9c3f252477bbac353d1640aa308b16ed041604b28ea. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ITO102264433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18448ed1a8b05c4ffb4c8bb1579c6d0752cbc039a22e13a869cb98201a8b722. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ITO102264434.