5050 or variation, may refer to: A.D. 5050, a year in the 6th millennium CE 5050 BC, a year in the 6th millennium BCE 5050 (number), a number in the 5000s range 5050 Doctorwatson, an asteroid in
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3339fc865f86f69fd0252a92ad1f0b6e3e2b514685a38bc600a671c970f798a1. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/36fa112f-2ebe-4fb2-b196-77b76d47a513.json and https://artists.proofprofile.net/proofs/artist/36fa112f-2ebe-4fb2-b196-77b76d47a513.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).