Topic
StacksIntermediateStacks miners spend BTC that goes to STX stackers, Clarity contracts can read Bitcoin state, and Nakamoto added fast blocks with Bitcoin finality. sBTC is a 1:1 BTC-backed token secured by a threshold signer set.
#bridges#consensus#smart-contracts
A canister is Wasm code plus heap and stable memory. It pays for compute, messages, storage and HTTPS outcalls in stable-priced cycles made from ICP; below its freezing threshold it freezes, and at zero it's wiped.
#dapp-development#gas-&-fees#smart-contracts
EthereumBeginnerEtherscan recompiles your source and compares bytecode. Verify with forge --verify or hardhat verify and a V2 API key; mismatches come from compiler version, optimizer, viaIR, EVM version, constructor args or paths.
#dev-tools#smart-contracts#troubleshooting
StarknetIntermediateCairo compiles to Sierra and CASM, uses felt252 plus checked integers, stores state in Map, makes every account a contract, and has no msg.value: ETH and STRK are ERC-20s. Build with Scarb and snforge.
#account-abstraction#dev-tools#smart-contracts
SuiIntermediateMove treats assets as typed resources that can't be copied or dropped, stores state with owners instead of in contract mappings, uses signers and capabilities for access control, and avoids classic reentrancy.
#move#security#smart-contracts
BaseIntermediateERC-4337 makes user accounts smart contracts via UserOperations, bundlers, an EntryPoint and paymasters, enabling batching, gas sponsorship and recovery. EIP-7702 lets existing EOAs delegate to such code.
#account-abstraction#smart-contracts#wallets
EthereumAdvancedA proxy holds storage and delegatecalls an implementation. Transparent proxies keep upgrade logic in the proxy; UUPS puts it in the implementation, which is cheaper but can brick upgrades if done wrong.
#security#smart-contracts#upgrades
EthereumIntermediateUpdate state before any external call (checks-effects-interactions), add nonReentrant to every function sharing that state, and treat token hooks and user-supplied addresses as external calls.
#security#smart-contracts#solidity
SolanaBeginnerSome account would end the transaction with more than zero lamports but less than its rent-exempt minimum. Find it by index, then fund it fully, sweep it to zero, or fund your reallocs.
#rust#smart-contracts#troubleshooting
EthereumIntermediateThe EVM hit a REVERT and undid the call. The reason is in the revert data: decode Error(string), Panic codes and custom errors with ethers, or replay a failed transaction with cast run.
#smart-contracts#solidity#troubleshooting
GeneralBeginnerDeFi, short for “decentralized finance,” is a system that makes financial products available on a public decentralized blockchain network that is not regulated by financial intermediaries like banks and national or international administration. DeFi involves taking traditional elements of the…
#defi#news#smart-contracts
