How KohenApp reads the market

Sources

Every figure in KohenApp is read from one of the sources below and is labelled with that source and the time it was read. Nothing is computed from a source that is not listed here.

Methods

How figures are formed, compared and carried through to a signature. The same rules apply on every page.

Identity and amounts

• An asset is its chain id plus its lowercase contract address. ERC-20 decimals are always re-read on-chain, never trusted from a list.
• Amounts are integers in base units (bigint). There is no floating-point token arithmetic anywhere in the pipeline.

Quote terms

• Minimum received = floor(expectedOutput × (10000 − slippageBps) / 10000).
• Expected output is gross of the venue fees that are already inside the price. Fees reported “in expected output” are never subtracted a second time.
• Price impact compares the quoted output with the pool’s mid price with the LP fee stripped out, and is shown only when a mid price could be read.
• Gas is a quoter meter, a provider estimate or a typical figure — each labelled as what it is — and is valued in USD through Chainlink ETH/USD only when that reading is fresh.
• A quote expires 30 seconds after it was read and is refreshed before signing.

Comparison and ranking

• “Best among checked routes” is shown only when at least two valid, comparable quotes exist: same chain, same pair, same amount, none expired. Otherwise the label is “Single available source” or “No supported route”.
• Ranking is net of gas only when every valid quote carries gas in USD and the output token has a verified USD price. Otherwise routes rank by gross output and gas is shown separately.

Market figures

• 24-hour volume is the indexer’s sum of trades, never derived from a reserve snapshot.
• Total pool liquidity is not executable depth; the two are never substituted for each other.

Execution flow

1. Connect a wallet.
2. Validate the chain, using the wallet’s own chain id.
3. Enter an amount.
4. Quote.
5. Review.
6. Approve the exact amount for the named spender. An unlimited allowance is granted only by explicit setting.
7. Re-quote and check the terms: an output more than 0.5 % worse, a lower minimum, or a different target, spender, route or value sends the trade back to review.
8. Simulate: an eth_call from the wallet’s address, with the output decoded where the router returns it.
9. Sign in the wallet.
10. Track the receipt. A trade is confirmed only on a successful receipt; reverted, replaced, dropped and unknown outcomes are each handled and shown as such.

Before every signature, the browser re-checks the transaction target and the spender against its own registry of allowed contracts. The wallet signs and broadcasts; KohenApp never holds keys.

Activity

The activity list contains only transactions submitted through KohenApp, tracked by hash and chain id. When the browser-side explorer read adds the wallet’s wider history, that part is labelled as read from the explorer.

Limitations

Where the method stops. None of these is hidden behind a placeholder figure.

• Indexer coverage and rate limits: pools the indexer does not cover do not appear in discovery, and a rate limit is shown as “unavailable”, never as an empty market.
• No historical windows beyond 5 m, 1 h, 6 h and 24 h.
• Stock Token feeds run 24/5, so weekend readings are hours old and are flagged accordingly.
• The public RPC drops large batches; what could not be read is shown as unavailable, not filled in.
• Blockscout blocks server-side callers; its records are available from the browser only.
• There is no L2 sequencer-uptime feed on this chain.
• The testnet (chain 46630) has no venues, no feeds and no indexer: inspection only.
• The local fork is a development environment only. It never proves production support.
• A passing inspection is not a safety rating.
• KohenApp charges no fee and has no custody; it never holds keys or funds.

Environments

One code base, three environments. The banner at the top of the page tells you which one you are looking at whenever it is not mainnet.