Deep Rooted Tree () is a 2011 South Korean television series starring Han Suk-kyu, Jang Hyuk and Shin Se-kyung. Based on the novel of the same name by Lee Jung-myung, it aired on SBS from 5 October to
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 0x0ff46c5c467b7f0837cf13e6d9cbab6b29f31194944d8f25c0a1cce1c3a4c46e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a78e6bd-e7ff-4285-afe2-c1edb0e883a8.json and https://artists.proofprofile.net/proofs/artist/6a78e6bd-e7ff-4285-afe2-c1edb0e883a8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
DJ Play Those Records: Deep Rooted Tree Remix