Sauron () is the title character and the main antagonist in J. R. R. Tolkien's The Lord of the Rings, where he rules the land of Mordor. He has the ambition of ruling the whole of Middle-earth using t
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 0xaeaa3517717134d726f7da743804c84bceaa87f67f19daced5b64ef8497d31ed. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f430c4ff-b7b7-4d85-a2e6-ac8a19b825fc.json and https://artists.proofprofile.net/proofs/artist/f430c4ff-b7b7-4d85-a2e6-ac8a19b825fc.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 0x3ba8f0a396a5a08c8fcc98bf3e8a58a8cf2e26ea0092e9157f7356976638f611. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZARB1819930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c6ef1cdb2d38dc9f9058e358295382f863a92db07648ccde5b3a994513eaf2. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:27:13Z), 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/QZZ772414705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a8e5b6baa7ec2715f82c652c9588dceba81eeb7e96322e5318eb6349834b53. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:52:56Z), 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/QZZ772414707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6105a9260d7433597ef096400800307191783be837728ca949d65471b2e3b0. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM2PV1832591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9a76e4479b8bce5342b97c951471df40ac82d923369d4f050ffac73ef7e87e. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:41:47Z), 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/QM2PV1832593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0307f1d1ef0facd0ec29c78efd5f71e759479189add22628315c61daa611e393. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:43:31Z), 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/QM2PV1832595.