Encode a CashAddress version byte for the given address type and payload length. See CashAddressVersionByte for more information.

The type parameter must be a number between 0 and 15, and bitLength must be one of the standardized lengths. To use the contents of a variable, cast it to CashAddressType or CashAddressSupportedLength respectively, e.g.:

const type = 3 as CashAddressType;
const length = 20 as CashAddressSupportedLength;
getCashAddressVersionByte(type, length);
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For the reverse, see decodeCashAddressVersionByte.