4 posts.
Seven Arbitrum One RPC providers compared on current pricing, free tiers and measured limits. Arbitrum's 0.3 s blocks change what log caps and archive mean. Pricing checked October 3, 2026.
Read →How to connect to Arbitrum One over JSON-RPC — chain ID 42161, why the block gas limit is a sentinel value, what safe and finalized actually mean here, zero priority fees, and where archive reads stop working.
Read →Robinhood Chain is a new Arbitrum Orbit L2 built for tokenized stocks and real-world assets. Here's how to connect, what stays standard EVM, and the one thing that isn't.
Read →Connecting to Arbitrum over WebSocket the same way you connect to Ethereum mainnet will bite you. The sequencer has no public mempool, newHeads is a firehose, and reconnecting isn't enough. Here's what actually breaks and how to handle it.
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