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| author | Adam Soltys <[email protected]> | 2026-09-03 22:01:21 -0700 |
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| committer | Adam Soltys <[email protected]> | 2026-09-03 22:01:21 -0700 |
| commit | 45fe7005b578d36ad462a9adc77f261808c48d20 (patch) | |
| tree | de4ba94c9541d6780a8837e0687c53e20c1e6790 /src/app.js | |
| parent | e5b531f9b871125235da370c15f5de8646e68125 (diff) | |
| download | coinosv3-45fe7005b578d36ad462a9adc77f261808c48d20.tar.gz coinosv3-45fe7005b578d36ad462a9adc77f261808c48d20.zip | |
Ark key derivation gets memoized — the boot CPU hog. A profile of the first 9s after refresh showed ~800ms of secp256k1 (q0/mul/TJ) dominating the main thread; the source was _key(index) recomputing a BIP32 derive + a getPublicKey point-mul on every call, and reconcile() calls it for every spendable coin (56 here), with decode/send/exit/fee-math hitting it again. A key for an index is constant per wallet, so it's cached by index now (mailbox key too) — dozens of EC muls per boot collapse to one each
Co-Authored-By: Claude Fable 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01MrkLsNScXe9b6BviUSdmMr
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