Walking After U (Korean: 워킹애프터유) is a South Korean female rock band based in Seoul, South Korea. It was formed in 2014 as a merger of Rubber Duckie and Swingz. Members Current Baek Haein 백해인
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 0x85089225ed006f42a5058da287f1e8b8cfa08d7a65b01e86b2f77a203bed64e4. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0b758ee-6541-40eb-a003-dfb60ba31d57.json and https://artists.proofprofile.net/proofs/artist/f0b758ee-6541-40eb-a003-dfb60ba31d57.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
WALKING AFTER U Studio Live & 10th Anniversary Documentary DVD