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- chain.js: derive the chain tip as the MAX height across the RPC pool and scan getLogs against that same synced node. Load-balanced public RPCs (publicnode) intermittently answer eth_blockNumber from a replica lagging thousands of blocks behind, which stalled the mainnet scan (latest < lastBlock, 0 events) and could skip freshly-mined events. This unblocks the live ledger + the purchase-confirmation email (both driven by the event scan). - disclaimer: replace the "rehearsal/testnet" section with a live-on-Polygon real-money notice (it's live now). - Point the dead Amoy fallbacks (purchase email tx link, contract-page source link) at Polygon mainnet / the verified mainnet contract. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>