RED-ARB-2026: Solana decentralized-exchange best quotes against OKX prices for six tokens

Version 1.1 (28 September 2026). The data files are unchanged. The documentation is corrected, and CORRECTIONS_v1.1.md lists each change. Internal notes, analysis logs, platform metadata files and figures remain in version 1.0 only. The main corrections are these. The OKX price is a USDT last-trade price, not a mid-price. The DEX price comes from one Jupiter aggregator quote that sells about US$100 of the token for USDC. The reported 91% share of DEX quotes below OKX is therefore largely a convention effect; after removing the common USDT/USD offset it is 61.7% overall and 9.2% for SOL. The venue field is the first leg of Jupiter's route, not a venue that beat OKX. The impact field is a quoted estimate, not realized slippage. Each token is sampled every 90 seconds, not second by second. RED-ARB-2026 records the OKX spot last-trade price and a Jupiter sell quote for six Solana tokens (SOL, JUP, JTO, BONK, WIF and PYTH), with their difference in basis points, the first-leg route label and Jupiter's price-impact estimate. No trade was executed. Coverage: 328,186 rows from 2026-05-08T16:16:16Z to 2026-07-05T02:19:18Z (57.42 days), 54,548 to 54,891 per token. Each token has two to four gaps longer than 6 minutes; the longest lasts 37.5 minutes. Method: the author's collection scripts requested the OKX ticker and then the Jupiter quote for each token in turn, and attached one time stamp after the two responses. Failed requests produced no row. Known issues: the spread is negative by construction by about pool fees, price impact and half the bid-ask spread, and it contains the USDC/USDT difference. Venue concentration differs strongly by token, so pooled figures mislead. Eight rows, one with a DEX price of zero, have absolute spreads above 1,000 basis points; exclude them. Licence: CC BY 4.0. Citation: Kamat, A. U. (2026). RED-ARB-2026: Solana decentralized-exchange best quotes against OKX prices for six tokens (Version 1.1) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.21211186