medium SHARE_COUNT_MISREPORT

XOM: balanceOf() is 1.001039564x away from share-equivalents

subject XOM (0xf9B46d3D1B22199D4D1025a9cEDB540A33F1a2d5) · methodology assay-rh-v0.2.0 · detected 2026-09-21T20:57:31.000Z

XOM reports uiMultiplier() = 1001039563764661900 (1.001039564). Under ERC-8056 a corporate action moves this multiplier rather than balances, so balanceOf() returns tokens, not share-equivalents. Share-equivalents = balance * uiMultiplier() / 1e18. Any surface presenting balanceOf() as a share count understates it by 0.1038% (the true count is 1.0010x the raw balance). Token value computed as balance * Chainlink feed price is unaffected, because the feed is already multiplier-adjusted.

Impact

10.4 bps · 0.1038%

totalSupply raw 231.0417 tokens vs 231.2819 share-equivalents (delta 0.2402). Presenting the raw balance as a share count understates by 0.1038%; equivalently the true count is 1.0010x the raw.

Evidence — 2/2 citations re-fetched and byte-compared

mismatched 0 · pruned 0 · verified 2026-09-21T20:57:39.277Z

uiMultiplier() == 1001039563764661900

chain 4663 · block 69101641 · uiMultiplier()
0xf9B46d3D1B22199D4D1025a9cEDB540A33F1a2d5

0x0000000000000000000000000000000000000000000000000de4682df44dfe8c

totalSupply() == 231041747380000000000

chain 4663 · block 69101641 · totalSupply()
0xf9B46d3D1B22199D4D1025a9cEDB540A33F1a2d5

0x00000000000000000000000000000000000000000000000c86592d2166700800

Reproduce this yourself:

cast call 0xf9B46d3D1B22199D4D1025a9cEDB540A33F1a2d5 "uiMultiplier()" \
  --block 69101641 \
  --rpc-url https://rpc.mainnet.chain.robinhood.com

Note: the public RPC prunes state within roughly 1k–10k blocks, so an older block may no longer be served. That makes a citation unchecked here, not disproven — ASSAY reports those two cases separately and never publishes a finding whose citation contradicts chain state.