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BitcoinIntermediateA stuck transaction pays too low a feerate. The sender can replace it with a higher-fee version (RBF), or anyone with an output can spend it in a high-fee child so the package gets mined (CPFP).
#transactions#troubleshooting
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
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
SolanaIntermediateFetch the blockhash at confirmed commitment right before signing, add a priority fee, and rebroadcast the same signed bytes until confirmed or past lastValidBlockHeight; only then re-sign.
#transactions#troubleshooting
EthereumIntermediateNonce too low means that nonce is already used; underpriced means a pending tx holds it and you didn't raise both fee fields enough. Pick nonces from "pending" and serialize sends per key.
#ethers.js#transactions#troubleshooting
GeneralIntermediateUnder this analysis, this Web 2.0 article contains conviction about Technologies and Tools in our study phase and teaching phase. Day by Day new technologies replace everyone in its upcoming paradigm headway and there is no one intact with its impact.
NeoIntermediatePrivate chain is important for data privacy, permission control as well as testing dApps and smart contracts. A private chain is isolated copy of public blockchain which would run on your local machine. In this article we’ll be going through basic steps to run NEO private chain on local machine…
#neo-blockchain#private-blockchain
GeneralIntermediateLearn what is the use of a digital signature in Blockchain.
GeneralIntermediateWhat is hashing in blockchain and what is its use.
GeneralIntermediateLearn what sidechains are and why the are used.
GeneralIntermediateBuilding apps and smart contracts with the Azure Blockchain Workbench
#azure#azure-blockchain-workbench#smart-contracts
