docs(spec-exact-evm): clarify extra fields per assetTransferMethod and fix two→three typo#2044
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…d fix two→three typo
The exact-EVM scheme spec documented the extra object only by example,
leaving readers unable to tell which fields are required vs conditional
vs optional for each of the three asset transfer methods (eip3009,
permit2, erc7710). Per-method classification is authoritative in the
code but was not documented in the spec.
Adds three field-definition blocks (one per assetTransferMethod) after
each method's PAYMENT-SIGNATURE example, classifying:
- extra.assetTransferMethod
- extra.name
- extra.version
Classification per method:
- eip3009: name and version are REQUIRED (needed for
transferWithAuthorization signature construction).
- permit2: name and version are CONDITIONAL (required when the
token supports EIP-2612 for gasless Permit2 approval).
- erc7710: name and version are OPTIONAL (not used by delegation-
based transfers).
Also fixes a stale count: 'one of two asset transfer methods' →
'one of three', since erc7710 was added without updating the summary
sentence.
Pure documentation. No new fields. No code changes.
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Description
The exact-EVM scheme spec describes three asset transfer methods (
eip3009,permit2,erc7710) but documents theextraobject only by example. Readers can't tell which of theextra.*fields are required, conditional, or optional for each method, as they may differ for each.This PR:
erc7710was addedassetTransferMethodfield-classification block after each method'sPAYMENT-SIGNATUREexample