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erc20/v0 package

Overview

Package erc20 implements MiniToken, a minimal fungible token modeled on the Solidity ERC-20 idea, ported to gno.land (gno 0.9 / sapphire).

State is package-level and persistent. All state-mutating exported functions are crossing functions (they take `cur realm` as the first parameter) per the gno 0.9 interrealm convention, and identify the caller via cur.Previous().Address() after checking cur.IsCurrent().

Functions

Allowance

func Allowance(owner, spender address) uint64
Ask AI Claude ChatGPT

Allowance returns how much `spender` may still pull from `owner`.

Params

Command

gnokey query vm/qeval -remote "https://rpc.onyx.testnets.gno.land" -data "gno.land/r/g1magld5ptgzaktqcexxq0pgq5lmdf0kz6re8hlv/x/daily/erc20/v0.Allowance(,)"

Result

Approve

func Approve(cur realm, spender address, amount uint64)
Ask AI Claude ChatGPT

Approve authorizes `spender` to pull up to `amount` tokens from the caller. Crossing function.

Params

Command

# WARNING: This command is running in an INSECURE mode.
# It is strongly recommended to use a hardware device for signing
# and avoid trusting any computer connected to the internet,
# as your private keys could be exposed.

gnokey maketx call -pkgpath "gno.land/r/g1magld5ptgzaktqcexxq0pgq5lmdf0kz6re8hlv/x/daily/erc20/v0" -func "Approve" -args $'' -args $'' -gas-fee 1000000ugnot -gas-wanted 1_000_000_000 -send "" -chainid "onyx-1" -remote "https://rpc.onyx.testnets.gno.land" ADDRESSgnokey query -remote "https://rpc.onyx.testnets.gno.land" auth/accounts/ADDRESS
gnokey maketx call -pkgpath "gno.land/r/g1magld5ptgzaktqcexxq0pgq5lmdf0kz6re8hlv/x/daily/erc20/v0" -func "Approve" -args $'' -args $'' -gas-fee 1000000ugnot -gas-wanted 1_000_000_000 -send "" -broadcast=false ADDRESS > call.tx
gnokey sign -tx-path call.tx -chainid "onyx-1" -account-number ACCOUNTNUMBER -account-sequence SEQUENCENUMBER ADDRESS
gnokey broadcast -remote "https://rpc.onyx.testnets.gno.land" call.tx

BalanceOf

func BalanceOf(holder address) uint64
Ask AI Claude ChatGPT

BalanceOf returns the token balance of `holder`. Read-only, non-crossing.

Param

Command

gnokey query vm/qeval -remote "https://rpc.onyx.testnets.gno.land" -data "gno.land/r/g1magld5ptgzaktqcexxq0pgq5lmdf0kz6re8hlv/x/daily/erc20/v0.BalanceOf()"

Result

Mint

func Mint(cur realm, to address, amount uint64)
Ask AI Claude ChatGPT

Mint creates `amount` new tokens and credits them to `to`, increasing the total supply. Crossing function.

Params

Command

# WARNING: This command is running in an INSECURE mode.
# It is strongly recommended to use a hardware device for signing
# and avoid trusting any computer connected to the internet,
# as your private keys could be exposed.

gnokey maketx call -pkgpath "gno.land/r/g1magld5ptgzaktqcexxq0pgq5lmdf0kz6re8hlv/x/daily/erc20/v0" -func "Mint" -args $'' -args $'' -gas-fee 1000000ugnot -gas-wanted 1_000_000_000 -send "" -chainid "onyx-1" -remote "https://rpc.onyx.testnets.gno.land" ADDRESSgnokey query -remote "https://rpc.onyx.testnets.gno.land" auth/accounts/ADDRESS
gnokey maketx call -pkgpath "gno.land/r/g1magld5ptgzaktqcexxq0pgq5lmdf0kz6re8hlv/x/daily/erc20/v0" -func "Mint" -args $'' -args $'' -gas-fee 1000000ugnot -gas-wanted 1_000_000_000 -send "" -broadcast=false ADDRESS > call.tx
gnokey sign -tx-path call.tx -chainid "onyx-1" -account-number ACCOUNTNUMBER -account-sequence SEQUENCENUMBER ADDRESS
gnokey broadcast -remote "https://rpc.onyx.testnets.gno.land" call.tx

Name

func Name() string
Ask AI Claude ChatGPT

Name returns the token name.

Command

gnokey query vm/qeval -remote "https://rpc.onyx.testnets.gno.land" -data "gno.land/r/g1magld5ptgzaktqcexxq0pgq5lmdf0kz6re8hlv/x/daily/erc20/v0.Name()"

Result

Render

func Render(path string) string
Ask AI Claude ChatGPT

Render produces the gnoweb Markdown view of the token: metadata plus a deterministically-ordered table of non-zero balances. Render is NOT a crossing function (no `cur realm` parameter).

Param

Command

gnokey query vm/qeval -remote "https://rpc.onyx.testnets.gno.land" -data "gno.land/r/g1magld5ptgzaktqcexxq0pgq5lmdf0kz6re8hlv/x/daily/erc20/v0.Render()"

Result

Symbol

func Symbol() string
Ask AI Claude ChatGPT

Symbol returns the token symbol.

Command

gnokey query vm/qeval -remote "https://rpc.onyx.testnets.gno.land" -data "gno.land/r/g1magld5ptgzaktqcexxq0pgq5lmdf0kz6re8hlv/x/daily/erc20/v0.Symbol()"

Result

TotalSupply

func TotalSupply() uint64
Ask AI Claude ChatGPT

TotalSupply returns the total number of tokens in existence.

Command

gnokey query vm/qeval -remote "https://rpc.onyx.testnets.gno.land" -data "gno.land/r/g1magld5ptgzaktqcexxq0pgq5lmdf0kz6re8hlv/x/daily/erc20/v0.TotalSupply()"

Result

Transfer

func Transfer(cur realm, to address, amount uint64)
Ask AI Claude ChatGPT

Transfer moves `amount` tokens from the caller to `to`. Crossing function.

Params

Command

# WARNING: This command is running in an INSECURE mode.
# It is strongly recommended to use a hardware device for signing
# and avoid trusting any computer connected to the internet,
# as your private keys could be exposed.

gnokey maketx call -pkgpath "gno.land/r/g1magld5ptgzaktqcexxq0pgq5lmdf0kz6re8hlv/x/daily/erc20/v0" -func "Transfer" -args $'' -args $'' -gas-fee 1000000ugnot -gas-wanted 1_000_000_000 -send "" -chainid "onyx-1" -remote "https://rpc.onyx.testnets.gno.land" ADDRESSgnokey query -remote "https://rpc.onyx.testnets.gno.land" auth/accounts/ADDRESS
gnokey maketx call -pkgpath "gno.land/r/g1magld5ptgzaktqcexxq0pgq5lmdf0kz6re8hlv/x/daily/erc20/v0" -func "Transfer" -args $'' -args $'' -gas-fee 1000000ugnot -gas-wanted 1_000_000_000 -send "" -broadcast=false ADDRESS > call.tx
gnokey sign -tx-path call.tx -chainid "onyx-1" -account-number ACCOUNTNUMBER -account-sequence SEQUENCENUMBER ADDRESS
gnokey broadcast -remote "https://rpc.onyx.testnets.gno.land" call.tx

TransferFrom

func TransferFrom(cur realm, from, to address, amount uint64)
Ask AI Claude ChatGPT

TransferFrom moves `amount` tokens from `from` to `to`, spending the caller's allowance granted by `from`. Crossing function.

Params

Command

# WARNING: This command is running in an INSECURE mode.
# It is strongly recommended to use a hardware device for signing
# and avoid trusting any computer connected to the internet,
# as your private keys could be exposed.

gnokey maketx call -pkgpath "gno.land/r/g1magld5ptgzaktqcexxq0pgq5lmdf0kz6re8hlv/x/daily/erc20/v0" -func "TransferFrom" -args $'' -args $'' -args $'' -gas-fee 1000000ugnot -gas-wanted 1_000_000_000 -send "" -chainid "onyx-1" -remote "https://rpc.onyx.testnets.gno.land" ADDRESSgnokey query -remote "https://rpc.onyx.testnets.gno.land" auth/accounts/ADDRESS
gnokey maketx call -pkgpath "gno.land/r/g1magld5ptgzaktqcexxq0pgq5lmdf0kz6re8hlv/x/daily/erc20/v0" -func "TransferFrom" -args $'' -args $'' -args $'' -gas-fee 1000000ugnot -gas-wanted 1_000_000_000 -send "" -broadcast=false ADDRESS > call.tx
gnokey sign -tx-path call.tx -chainid "onyx-1" -account-number ACCOUNTNUMBER -account-sequence SEQUENCENUMBER ADDRESS
gnokey broadcast -remote "https://rpc.onyx.testnets.gno.land" call.tx