Kchannels
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Introduction
Architecture
EIP-712 signatures
Inside Kchannels, the standard representation of an object is JSON; however, when creating or validating signatures, the object is represented with its values only as per EIP-712. The following are additional rules added to help simplify and standardize things:
- Always use UTF-8 to represent both the JSON object and the ABI representation for EIP-712.
- Fields within an object always appear in alphabetical order by field name.
- All values are immutable once populated. Exception to this are lists, which can only be appended new values into, and always at the end.
- Empty fields appear as empty fields.
- Timestamps are always represented by an integer in UNIX format: number of milliseconds since 1970.
- The standard unit for all currency and tokens is the smallest available denomination: wei for Ether and a decimal representation of the token balance. (i.e. store token balances as a fixed-point value and omit the decimal point).
- Not all fields are being signed: the following fields are always excluded:
- fields containing list of signatures
- transaction summary, which are signed separately on transaction completion/failure.
- Values in a list are always represented in the order they were inserted. Exception to this are fields representing token balances for channel state and tokens transfered within a transaction: these are always sorted ascending by the token smart contract address.
Last modified 1yr ago
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