LiquidityRemoved

Event v290 → current #3

Emitted when a user removes an entire liquidity position .

View events on chain
Useful for: stakersdevelopersanalyticswallets

The Big Picture

LP removals return assets plus accumulated fees. fee_tao/fee_alpha show earnings.

Use Cases

  • Track LP exits
  • Monitor TVL decreases
  • Confirm position closure
  • Analyze fee accumulation

From Chain Metadata

Event emitted when a liquidity position is removed from a subnet's liquidity pool.

Part of: Concentrated Liquidity

Triggers

Emitted by

remove_liquidity

Preconditions

  • Position existed
  • User owned the position

Effects

Postconditions

  • Position deleted
  • TAO/Alpha returned
  • Fees paid out

Side Effects

  • Updates tick state
  • May affect pool depth

Event Data

#NameTypeDescription
0
coldkey
AccountId Cold wallet address (offline storage) (hex -> SS58)
1
hotkey
AccountId Hot wallet address (active operations) (hex -> SS58)
2
netuid
u16 Subnet/network identifier (0-65535)
3
position_id
PositionId position_id (PositionId)
4
liquidity
u64 liquidity (u64)
5
tao
u64 tao (u64)
6
alpha
u64 alpha (u64) (RAO -> TAO (/ 10^9))
7
fee_tao
u64 fee_tao (u64) (RAO -> TAO (/ 10^9))
8
fee_alpha
u64 fee_alpha (u64) (RAO -> TAO (/ 10^9))
9
tick_low
TickIndex tick_low (TickIndex) (price = 1.0001^tick)
10
tick_high
TickIndex tick_high (TickIndex) (price = 1.0001^tick)

Code Examples

import { ApiPromise, WsProvider } from "@polkadot/api";
import { stringCamelCase } from "@polkadot/util";

const provider = new WsProvider("wss://entrypoint-finney.opentensor.ai:443");
const api = await ApiPromise.create({ provider });

// Subscribe to LiquidityRemoved events
api.query.system.events((events) => {
  events
    .filter(({ event }) =>
      event.section === stringCamelCase("Swap") &&
      event.method === "LiquidityRemoved"
    )
    .forEach(({ event }) => {
      console.log("LiquidityRemoved:", event.data.toHuman());
    });
});

On-Chain Activity

Emission Frequency
●●○○○○ Moderate 10K–100K emissions

Occasional use

#44 most emitted event

As of block 7,429,232

Runtime Info

View Source
Pallet Index
28
Event Index
3
First Version
v290
Current Version
v393
Back to Swap Events