---
# System prepended metadata

title: Testing v10.0.0-rc2 on Testnet | ERC-20

---

Testing v10.0.0-rc2 on Testnet | ERC-20
=====================

## Multiple ERC-20 registration

### Deployed ERC-20 contracts using Remix
- TTK1: 0xd43Ad9804631165aAeCe65C37FfF5799c46b0127
- TTK2: 0x59BDdFE49655271050B03c6eB7f99a2cA879AC26
- TTK3: 0x773775ac1f59a04caf3098A1685469d8fD6C2450

### Submit proposal to register multiple ERC-20 pairs

```shell
evmosd tx gov submit-legacy-proposal register-erc20 \
 0xd43Ad9804631165aAeCe65C37FfF5799c46b0127 \
 0x59BDdFE49655271050B03c6eB7f99a2cA879AC26 \
 0x773775ac1f59a04caf3098A1685469d8fD6C2450 \
  --title="Test: Register multiple ERC-20 token pairs" \
  --description="This is a proposal to test the new feature that allows registering multiple ERC-20 token pairs on the same proposal. Please, vote yes on this proposal to test the new functionality properly" \
  --deposit="10000000000000000000atevmos" \
  --from=my_key1 --keyring-backend=test \
  --fees=2000000000010000atevmos --gas=2000000 -b block \
  --chain-id=evmos_9000-4 \
  --node https://evmos-testnet-rpc.polkachu.com:443 --yes
```

The resulting proposal number is [**108**](https://testnet.mintscan.io/evmos-testnet/proposals/108)
  
### Vote on the created proposal
  
```shell 
evmosd tx gov vote 108 yes --from=my_key1 --chain-id=evmos_9000-4 --yes --keyring-backend=test --fees=2000000000010000atevmos --gas=2000000 --node=https://evmos-testnet-rpc.polkachu.com:443
```

### Check if all token pairs were registered
waiting for proposal to pass...
https://testnet.mintscan.io/evmos-testnet/proposals/108


## Multiple IBC coin registration

```shell
evmosd tx gov submit-legacy-proposal register-coin /tmp/proposal.json \
  --title="Test: Register multiple IBC coin token pairs" \
  --description="This is a proposal to test the new feature that allows registering multiple IBC coins token pairs on the same proposal. Please, vote yes on this proposal to test the new functionality properly" \
  --deposit="10000000000000000000atevmos" \
  --from=my_key1 --keyring-backend=test \
  --fees=2000002000000000atevmos --gas=8000000 -b block \
  --chain-id=evmos_9000-4 \
  --node https://evmos-testnet-rpc.polkachu.com:443 --yes
```


Using the following proposal.json:
```json
{
    "metadata": [
        {
            "description": "Wrapped Avax",
            "denom_units": [
                {
                    "denom": "ibc/2B84B3D7B8AA4B04607ACD2E5096D20B34D6D355D33F4F5DD4659449EB757597",
                    "exponent": 0,
                    "aliases": ["ibcwavax-wei"]
                },
                {
                    "denom": "WAVAX",
                    "exponent": 6
                }
            ],
            "base": "ibc/2B84B3D7B8AA4B04607ACD2E5096D20B34D6D355D33F4F5DD4659449EB757597",
            "display": "WAVAX",
            "name": "Wavax",
            "symbol": "WAVAX"
        },
        {
            "description": "The native staking and governance token of the Spiking chain",
            "denom_units": [
                {
                    "denom": "ibc/66342056CCD564CD765A50BA5BB3AE1D4B7614088CC2521ABFB357D2A65E64A2",
                    "exponent": 0,
                    "aliases": ["ibcuspike"]
                },
                {
                    "denom": "SPIKE",
                    "exponent": 6
                }
            ],
            "base": "ibc/66342056CCD564CD765A50BA5BB3AE1D4B7614088CC2521ABFB357D2A65E64A2",
            "display": "SPIKE",
            "name": "Spike",
            "symbol": "SPIKE"
        },
        {
            "description": "Wrapped BNB",
            "denom_units": [
                {
                    "denom": "ibc/8291F71592AEE7C593D5DC05C1B66CD190B2EEA74DF09D2B8BF57BF6C4E8BCAA",
                    "exponent": 0,
                    "aliases": ["ibcwbnb-wei"]
                },
                {
                    "denom": "WBNB",
                    "exponent": 6
                }
            ],
            "base": "ibc/8291F71592AEE7C593D5DC05C1B66CD190B2EEA74DF09D2B8BF57BF6C4E8BCAA",
            "display": "WBNB",
            "name": "WBnb",
            "symbol": "WBNB"
        }
    ]
}
```

Resulting proposal id [**111**](https://testnet.mintscan.io/evmos-testnet/proposals/111)

Vote yes on the proposal

```shell 
evmosd tx gov vote 111 yes --from=my_key1 --chain-id=evmos_9000-4 --yes --keyring-backend=test --fees=2000000000010000atevmos --gas=2000000 --node=https://evmos-testnet-rpc.polkachu.com:443
```



## Automatic coin conversion

AFAIK only the Axelar-Evmos relayer by Polkachu is up and running. Tried with Evmos-Osmosis but got error:

```shell
failed to execute message; message index: 0: cannot send packet using client (07-tendermint-8) with status Expired: client is not active
```

To solve this, need to coordinate IBC client upgrade with someone running a relayer on testnet. [Documentation](https://ibc.cosmos.network/main/ibc/proposals.html)


### Send IBC coin (`uaxl`)

#### Token pair NOT registered
From Axelar to Evmos:
```shell
axelard tx ibc-transfer transfer transfer channel-61 evmos17rpc0rwcmehdcpczcpkzhwdguwqrjutnntdunf 2000000uaxl --node https://rpc-axelar-testnet.imperator.co:443 --from my_key1 --chain-id axelar-testnet-lisbon-3 -y
```

Check balance on Evmos:
```shell
evmosd q bank balances evmos17rpc0rwcmehdcpczcpkzhwdguwqrjutnntdunf --node=https://evmos-testnet-rpc.polkachu.com:443
```
Result: IBC coin not registered, should have balance in IBC denom
```shell
balances:
- amount: "58484874576729609940"
  denom: atevmos
- amount: "2000000"
  denom: ibc/D70F005DE981F6EFFB3AD1DF85601258D1C01B9DEDC1F7C1B95C0993E83CF389

```

Send back some tokens
```shell
evmosd tx ibc-transfer transfer transfer channel-22 axelar1564c7upu7p45lx2e3zwpltmz8y5g57jd4j4y3y 1000000ibc/D70F005DE981F6EFFB3AD1DF85601258D1C01B9DEDC1F7C1B95C0993E83CF389 --from=my_key1 --chain-id=evmos_9000-4 --yes --keyring-backend=test --fees=2000000000010000atevmos --gas=2000000 --node=https://evmos-testnet-rpc.polkachu.com:443
```

Received OK, all balances updated as expected on both chains


#### Registered token pair - IBC coin

To do this, we submitted a proposal for registering the token pair for AXL on testnet.

Send Axl from Axelar to Evmos:
```shell
axelard tx ibc-transfer transfer transfer channel-61 evmos17rpc0rwcmehdcpczcpkzhwdguwqrjutnntdunf 2000000uaxl --node https://rpc-axelar-testnet.imperator.co:443 --from my_key1 --chain-id axelar-testnet-lisbon-3 -y
```

On Evmos all previous IBC balance + the transfer amount is converted to ERC-20 (contract_addr =`0x5aD523d94Efb56C400941eb6F34393b84c75ba39`)

Send back AXL as ERC-20 to Axelar chain
```shell
evmosd tx ibc-transfer transfer transfer channel-22 axelar1564c7upu7p45lx2e3zwpltmz8y5g57jd4j4y3y 5000000erc20/0x5aD523d94Efb56C400941eb6F34393b84c75ba39 --from=my_key1 --chain-id=evmos_9000-4 --yes --keyring-backend=test --fees=2000000000010000atevmos --gas=2000000 --node=https://evmos-testnet-rpc.polkachu.com:443
```

On Axelar, the funds are updated with the sent amount.

On Evmos the ERC-20 funds are deducted properly.


### Send ERC-20 (registered pair)

Send TTK1 ERC-20 tokens from Evmos to Axelar
```shell
evmosd tx ibc-transfer transfer transfer channel-22 axelar1564c7upu7p45lx2e3zwpltmz8y5g57jd4j4y3y 3000000000000000000erc20/0xd43Ad9804631165aAeCe65C37FfF5799c46b0127 --from=my_key1 --chain-id=evmos_9000-4 --yes --keyring-backend=test --fees=2000000000010000atevmos --gas=2000000 --node=https://evmos-testnet-rpc.polkachu.com:443
```


Check balance on Axelar:
```shell
axelard q bank balances axelar1564c7upu7p45lx2e3zwpltmz8y5g57jd4j4y3y --node https://axelar-lisbon-rpc.allthatnode.com:26657

balances:
- amount: "3000000000000000000"   // TTK1 ERC-20
  denom: ibc/ABD631F5026F3EA53EB80EC83FF09792A5439C7B83692874547BBDD22A37236E
- amount: "500000000000000000"    // aevmos
  denom: ibc/F510A39DDB7B08DEB76CEBAF9D7CE2D8D952BED2A0E5E91F07F53BBF50BBBEE0
- amount: "22994800"
  denom: uaxl
```

Send back the TTK1 tokens from Axelar (as IBC coins) to Evmos
```shell
axelard tx ibc-transfer transfer transfer channel-61 evmos17rpc0rwcmehdcpczcpkzhwdguwqrjutnntdunf 2000000000000000000ibc/ABD631F5026F3EA53EB80EC83FF09792A5439C7B83692874547BBDD22A37236E --node https://axelar-lisbon-rpc.allthatnode.com:26657 --from my_key1 --chain-id axelar-testnet-lisbon-3 -y
```

The TTK1 tokens were received and converted to ERC-20 tokens on Evmos side. The Automated Coin Conversion was successful.


### EVMOS token

From Evmos to Axelar:
```shell
evmosd tx ibc-transfer transfer transfer channel-22 axelar1564c7upu7p45lx2e3zwpltmz8y5g57jd4j4y3y 2000000000000000000atevmos --from=my_key1 --chain-id=evmos_9000-4 --yes --keyring-backend=test --fees=2000000000010000atevmos --gas=2000000 --node=https://evmos-testnet-rpc.polkachu.com:443
```

Check balance on Axelar:
```shell
balances:
- amount: "2000000000000000000"
  denom: ibc/F510A39DDB7B08DEB76CEBAF9D7CE2D8D952BED2A0E5E91F07F53BBF50BBBEE0
- amount: "23997600"
  denom: uaxl
```

Send back the EVMOS tokens from Axelar to Evmos
```shell
axelard tx ibc-transfer transfer transfer channel-61 evmos17rpc0rwcmehdcpczcpkzhwdguwqrjutnntdunf 1500000000000000000ibc/F510A39DDB7B08DEB76CEBAF9D7CE2D8D952BED2A0E5E91F07F53BBF50BBBEE0 --node https://axelar-lisbon-rpc.allthatnode.com:26657 --from my_key1 --chain-id axelar-testnet-lisbon-3 -y
```

Received OK and balance of `atevmos` increased accordingly on the Evmos account



## Checking balances on IBC transfer escrow account on one chain & the total supply of coins of the other chain

I performed this check to make sure all the transferred coins on one chain reach the other.

There was a situation that the IBC transfers could not trigger the timeout. As a result, the sent funds neither reached the destination chain nor refunded the sender. After a few hours (more than 24hs), the timeout was processed and the corresponding escrowed funds were refunded to the sender.


```
// query escrowed tokens for channel-61 (evmos)
~ ❯ axelard q bank balances axelar1jmcglw0kv9k2wyj4h52yg66qtn6r5sxy59kkqq --node https://axelar-lisbon-rpc.allthatnode.com:26657
balances:
- amount: "506399999999998000"
  denom: eth-wei
- amount: "42932057"
  denom: uausdc
- amount: "16473442"
  denom: uaxl
- amount: "3579400000000000000"
  denom: wavax-wei
- amount: "1348300000000000000"
  denom: wbnb-wei
- amount: "590000000000000000"
  denom: wmatic-wei
pagination:
  next_key: null
  total: "0"

// query total supply of coins on chain
evmosd query bank total  --node=https://evmos-testnet-rpc.polkachu.com:443
...
- amount: "1348300000000000000"   // wbnb-wei == escrowed on axelar
  denom: ibc/8291F71592AEE7C593D5DC05C1B66CD190B2EEA74DF09D2B8BF57BF6C4E8BCAA
- amount: "3579400000000000000"  // wavax-wei == escrowed on axelar
  denom: ibc/2B84B3D7B8AA4B04607ACD2E5096D20B34D6D355D33F4F5DD4659449EB757597
- amount: "4472400"     // axl, delta with escrowed on axelar = 12001042
  denom: ibc/D70F005DE981F6EFFB3AD1DF85601258D1C01B9DEDC1F7C1B95C0993E83CF389

```