thumb|Stars rotating in the night sky The cosmos (, ; ) is an alternative name for the universe or its nature or order. Usage of the word cosmos implies viewing the universe as a complex and orderly s
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 0xfbb48cc5e44fa5e87e8e06b4c5e465d91ffcdfb8d827407caef71faff826d871. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e91d9c49-186f-4ca2-a3c7-fd7a28a5823f.json and https://artists.proofprofile.net/proofs/artist/e91d9c49-186f-4ca2-a3c7-fd7a28a5823f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Star Spangled Banner (US Anthem) [arr. by Andris Sējāns]
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 0x85bbb5bf3f15d297c742fa45dd7e5b4afb4feffe51ff52185da4ae22e0f78bb9. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:08:29Z), 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/LVA801000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2f5de9548a2829b11b3d4c280818fe897b70e9b727ad016adcb40561d22a7f. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/LVA801000009.