One block's reward and transaction counts

Facts about ONE block, addressed by number. reward is who was credited, how much (in wei, as a decimal STRING — never Number() this), and any uncle rewards; uncles is a real empty array and uncleInclusionRewardWei a real "0" on every post-Merge Ethereum block (2022-09-15 onward) — proof-of-stake has no uncles, this is not a missing answer. blockRewardWei stays real and nonzero post-Merge: it is priority-fee tip revenue to the block's fee recipient now, not the old proof-of-work subsidy. On RHC the credited address is the sequencer and blockRewardWei a real "0": a rollup block pays no reward. On ARC reward is all-null, because no reward is reported there. txnCounts answers on every chain; on Stable, RHC and ARC only total is counted and the by-kind counts are null. erc20, erc721 and erc1155 count transfer EVENTS, not transactions: one transaction moving three tokens counts three. On BNB and Base internal is null — not a zero — because internal calls are not counted there. A block number that has not been mined, or does not exist on this chain, answers with every field null rather than an error.