A single transaction (e.g. a DEX swap) can produce multiple ERC-20
token transfers. The transaction merger was keyed by tx hash alone,
so only the last token transfer survived. This meant the address-token
view's contract-address filter often matched nothing.
Use a composite key (hash + contract address) so all token transfers
are preserved. Also remove the bare normal-tx entry when it gets
replaced by token transfers to avoid duplicates.
Closes#72
When tokenBalances doesn't contain an entry for a token (e.g. before
balances are fetched), the symbol fell back to '?' in addressToken
and send views.
Add resolveSymbol() helper that checks tokenBalances → TOKEN_BY_ADDRESS
(known tokens) → trackedTokens → truncated address as last resort.
Fixes USDC and other known tokens showing '?' when balance data
hasn't loaded yet.
The Uniswap Universal Router calldata decoder listed V4_SWAP (0x10) in
command names but never decoded its inner actions to extract token
addresses. This caused all V4 swaps (e.g. USDT→USDC) to display as
'Swap ETH → ETH' because tokenIn/tokenOut defaulted to null, which
tokenInfo() resolved as native ETH.
Added decodeV4Swap() which parses the V4 inner action bytes:
- SETTLE (0x0b) → extracts input token currency address
- TAKE (0x0e) → extracts output token currency address
- SWAP_EXACT_IN/OUT and their SINGLE variants → extracts tokens from
pool keys and paths, plus amounts
These addresses are then resolved against the known token list
(TOKEN_BY_ADDRESS) to display correct symbols like USDT, USDC, etc.
Fixes#59
When a token's balance entry is missing or incomplete (e.g. not yet
fetched from Blockscout), the address-token view and send view now
fall back to the built-in known token list for symbol, name, and
decimals instead of showing '?'.
Also includes token name in the balance object returned by
fetchTokenBalances so the contract info well can display it.
Fixes#51
Two issues that could cause ENS names to disappear:
1. refreshBalances: on ENS lookup error, addr.ensName was set to null,
wiping any previously resolved name. Now keeps the existing value
on error — only overwrites on successful lookup.
2. ens.js cache: failed lookups were cached as null for 12 hours,
preventing retries even after transient errors resolved. Now skips
caching on failure so subsequent lookups retry immediately.
Added debug logging to ENS reverse lookups in refreshBalances.
- Map known DEX methods (execute, swap, multicall, etc.) to "Swap"
label instead of raw method name like "Execute"
- Remove unused displayData variable in transactionDetail.js
Addresses review feedback on PR #10.
- Preserve contract call metadata (direction, label, method) when token
transfers merge with normal txs in fetchRecentTransactions
- Handle 'contract' direction in counterparty display for home and
address detail list views
- Add decoded calldata display to transaction detail view, fetching
raw input from Blockscout and using decodeCalldata from approval.js
- Show 'Unknown contract call' with raw hex for unrecognized calldata
- Export decodeCalldata from approval.js for reuse
Names fetched from CoinGecko bulk API (100% coverage).
URLs sourced from ethereum-lists GitHub repo + manual curation
for major tokens. Some lesser-known tokens have empty URLs which
can be populated incrementally.
- Display full-precision amount (no 4-decimal truncation) in the
transaction detail view, with native quantity (wei/base units) below
- Both amount and native quantity are click-copyable
- Show wallet/address title above from/to when the address is ours
- Update README Display Consistency to document the exception
Replace stub error handlers with full approval flow for personal_sign,
eth_sign, eth_signTypedData_v4, and eth_signTypedData. Uses toolbar
popup only (no fallback window) and keeps sign approvals pending across
popup close/reopen cycles so the user can respond via the toolbar icon.
Token balances from Blockscout are now filtered before display.
A token only appears if it meets at least one criterion:
- In the known 511-token list (by contract address)
- Explicitly tracked by the user (added via + Token)
- Has >= 1,000 holders on-chain
Also rejects tokens spoofing a known symbol from a different
contract address (same check used for transaction filtering).
This prevents airdropped spam tokens like "OpenClaw" from
appearing in the wallet without the user ever tracking them.
Contract interactions (approve, swap, etc.) now display the method
name and token symbol instead of the meaningless 0 ETH value.
Blockscout provides the method name and whether the target is a
contract — parseTx uses these plus TOKEN_BY_ADDRESS to produce
labels like "Approve USDT" or "Swap LINK".
Added directionLabel field to parsed transactions so renderers
don't need to know about the sent/received/contract distinction.
Also: clicking a transaction on the home screen now opens the
transaction detail view instead of navigating to the address
detail view.
The dust filter was hiding contract interactions (approve, transfer,
etc.) because they have 0 ETH value, which falls below the dust
threshold. Contract calls with 0 ETH are normal — only plain ETH
transfers should be checked against the dust threshold.
Also captures is_contract and method from Blockscout's transaction
response for future use in transaction display.
Delete src/shared/tokens.js and migrate all consumers to
src/shared/tokenList.js which has 511 tokens (vs ~150) sourced
from CoinGecko with on-chain verified decimals.
- prices.js: getTopTokenPrices now from tokenList
- transactions.js: KNOWN_SYMBOLS now from tokenList (3.4x more
symbols for spoof detection)
- send.js: KNOWN_SYMBOLS for token dropdown filtering
- approval.js: uses pre-built TOKEN_BY_ADDRESS map instead of
constructing its own from TOKENS array
- addToken.js: uses getTopTokens(25) for quick-pick buttons
(only top 25 shown, not all 511)
New module with top Ethereum mainnet ERC-20 tokens sourced from
CoinGecko API (market cap ranking) with decimals verified on-chain
via eth_call to each contract. Addresses are EIP-55 checksummed.
Exports:
- TOKENS: full array ordered by market cap
- TOKEN_BY_ADDRESS: Map of lowercase address -> token info
- KNOWN_SYMBOLS: Map of uppercase symbol -> legitimate address
- getTopTokens(n): return first n tokens
This module is not yet integrated into the existing token.js — it
exists alongside it for now as a data source ready for integration.
When sending an ERC-20 token, Blockscout returns the same tx hash
from both the /transactions endpoint (as a 0 ETH contract call) and
the /token-transfers endpoint (as the actual token transfer with
amount and symbol). The old dedup logic kept the 0 ETH version and
skipped the token transfer.
Now token transfers replace normal transactions with the same hash,
since the token transfer has the real amount, symbol, and contract
address.
Creates a centralized transactionDetail.js view module, replacing
the duplicated showTxDetail/copyableHtml/blockieHtml/txDetailAddressHtml
code that was in both addressDetail.js and addressToken.js (~120 lines
removed). Transaction data is stored in state.viewData and persisted,
so the transaction detail view survives popup close/reopen.
Adds viewData to persisted state. Each view that needs data for
restore stores it in state.viewData before rendering. The ctx object
now has showTransactionDetail() alongside all other show methods.
Restorable views expanded to include: transaction (via viewData.tx),
success-tx (via viewData.hash/blockNumber), error-tx (via
viewData.message). txStatus.js split into show (sets data) + render
(reads data) for each screen, enabling restore.
Non-restorable views (send, confirm-tx, wait-tx, add-wallet,
import-key, add-token) fall back to the nearest parent since they
involve active form state or network polling.
The current view, selected wallet, selected address, and selected
token are now saved to extension storage. When the popup reopens,
it restores to the last visited view instead of always returning
to the home screen.
Restorable views: main, address detail, address-token, receive,
settings. Non-restorable views (send, confirm, tx status, forms)
fall back to the nearest parent. Stored indices are validated
against current wallet data to handle stale references.
Also refactors receive view setup into a centralized receive.show()
function, eliminating duplicate QR/address/warning code from
addressDetail.js, addressToken.js, and home.js. Adds settings.show()
to centralize settings field population.
Clicking a token balance on the address detail view navigates to a
focused view showing only that token's transactions. Send pre-selects
and locks the token dropdown, Receive shows an ERC-20 warning for
non-ETH tokens, and all back buttons return to the correct parent view.
Add debugFetch wrapper in log.js that logs method, URL, and body on
request, and status code on response. Replace all fetch() calls
across balances, transactions, tokens, background RPC proxy, and
settings validation with debugFetch.
Add showZeroBalanceTokens setting (default: on). When enabled,
balanceLinesForAddress merges state.trackedTokens with the address's
tokenBalances, showing 0.0000 lines for tracked tokens that have no
balance on that address. This gives users visibility into all tokens
they're watching across all addresses.
Address poisoning attacks also use real native ETH dust transfers
(e.g. 1 gwei) from look-alike addresses. Token-level filters cannot
catch these. Add a configurable dust threshold (default 100,000 gwei
/ 0.0001 ETH) that hides transactions below the threshold from
history. The threshold is editable in Settings and the filter can be
disabled entirely. Document the specific attack tx in the README.
Three layers of defense against address poisoning attacks:
1. Known symbol verification: tokens claiming a symbol from the
hardcoded top-250 list (e.g. "ETH", "USDT") but from an
unrecognized contract are identified as spoofs and always hidden.
Their contract addresses are auto-added to the fraud blocklist.
2. Low-holder filtering: tokens with <1000 holders are hidden from
both transaction history and the send token selector. Controlled
by the "Hide tokens with fewer than 1,000 holders" setting.
3. Fraud contract blocklist: a persistent local list of detected
fraud contract addresses. Transactions involving these contracts
are hidden. Controlled by the "Hide transactions from detected
fraud contracts" setting.
Both settings default to on and can be disabled in Settings.
Fetching and filtering are separated: fetchRecentTransactions returns
raw data, filterTransactions is a pure function applying heuristics.
Token holder counts are now passed through from the Blockscout API.
allowedSites and deniedSites are now objects keyed by address instead
of flat arrays, so approving a site for one address no longer grants
access for all addresses. Old flat-array data is discarded on load.
Settings view collects unique hostnames across all addresses and
deleting removes the site from every address.
Scanning: check all gap-limit addresses in parallel per batch instead
of sequentially. For a wallet with 1 used address this reduces from
12 sequential RPC round-trips to 1 parallel batch + 1 small follow-up.
Display: add shared formatAddressHtml(address, ensName, maxLen) and
escapeHtml() to helpers.js. Use them in confirm-tx (was missing color
dot entirely) and approval view. Remove duplicate escapeHtml from
addressDetail.js.
- Add activeAddress, allowedSites, deniedSites, rememberSiteChoice to
persisted state
- Replace auto-connect with permission checks: allowed sites connect
automatically, denied sites are rejected, unknown sites trigger an
approval popup
- Add approval popup UI with hostname display, active address preview,
remember checkbox, and allow/deny buttons
- Add ACTIVE/[select] indicator on address rows in the main view to
set the active web3 address
- Add allowed/denied site list management in settings with delete buttons
- Broadcast accountsChanged to connected dapps when active address changes
- Handle approval window close as implicit denial
Deterministic colored dots derived from address bytes (16-color palette)
displayed before every address. ENS reverse resolution for transaction
counterparties with 12-hour localStorage cache.
- Transaction values now use exactly 4 decimal places (was 6),
matching balance display everywhere else
- Transaction detail view shows "2026-02-25 15:04:23 (23 days ago)"
instead of just the ISO date
- Added Display Consistency policy to README
Blockscout v2 API rejects the `limit` query parameter on
/transactions and /token-transfers endpoints (returns 422).
Remove it and slice results client-side instead.
Major changes:
- Fetch token balances and tx history from Blockscout API (configurable)
- Remove manual token discovery (discoverTokens) in favor of Blockscout
- HD address gap scanning on mnemonic import
- Duplicate mnemonic detection on wallet add
- EIP-6963 multi-wallet discovery + selectedAddress updates in inpage
- Two-tier balance refresh: 10s while popup open, 60s background
- Fix $0.00 flash before prices load (return null when no prices)
- No-layout-shift: min-height on total value element
- Aligned balance columns (42ch address width, consistent USD column)
- All errors use flash messages instead of off-screen error divs
- Settings gear in global title bar, add-wallet moved to settings pane
- Settings wells with light grey background, configurable Blockscout URL
- Consistent "< Back" buttons top-left on all views
- Address titles (Address 1.1, 1.2, etc.) on main and detail views
- Send view shows current balance of selected asset
- Clickable affordance policy added to README
- Shortened mnemonic backup warning
- Fix broken background script constant imports
Split popup/index.js (784 lines) into focused modules:
- shared/state.js: state management, storage persistence
- shared/wallet.js: mnemonic gen, HD derivation, signing
- shared/prices.js: price cache (5min TTL), USD formatting,
value aggregation (address → wallet → total)
- shared/balances.js: ETH + ERC-20 balance cache (60s TTL),
ENS lookup, token contract metadata lookup
- shared/vault.js: unchanged (libsodium encryption)
- shared/tokens.js: unchanged (token list + CoinDesk client)
- popup/index.js: view switching and event wiring only
Token tracking is now app-wide: trackedTokens stored in state,
balances fetched for all tracked tokens across all addresses.
Add Token now calls the real contract to read name/symbol/decimals.
Total portfolio value shown in 2x type on Home screen.
vault.js: Argon2id key derivation + XSalsa20-Poly1305 encryption
via libsodium-wrappers-sumo. No raw crypto primitives.
Wallet creation now requires a password. The mnemonic or private
key is encrypted before storage — only the ciphertext blob
(salt, nonce, ciphertext) is persisted. The plaintext secret
is never stored.
Sending requires the password to decrypt the secret, derive
the signing key, and construct the transaction. Wrong password
is caught and reported.
tokens.js: ~150 ERC-20 tokens ordered by market cap with
getTopTokenSymbols(n) and getTopTokenPrices(n) (errors if n>30).
Price fetching uses CoinDesk CADLI API. Popup now shows USD
values next to ETH balances in wallet list and address detail.
Prices and balances fetched in parallel on popup open.
Makefile, Dockerfile, CI workflow, prettier config, manifests for
Chrome (MV3) and Firefox (MV2), source directory structure, and
minimal test suite. All checks pass.
