Event signature · Stablecoins and issued tokens

UnfreezeAddress (Paxos V2) event signature and topic0

The topic0 of the UnfreezeAddress (Paxos V2) event is 0x150465b020dfc06a59269da94ed66db9b65a516cf4fdd5f583b0f12752339bbe, the keccak-256 hash of UnfreezeAddress(address); 1 of its 1 arguments is indexed. Address unfrozen by the token issuer (Paxos, V2 implementation).

Anatomy of a UnfreezeAddress (Paxos V2) log

Topics

topic00x150465b020dfc06a59269da94ed66db9b65a516cf4fdd5f583b0f12752339bbekeccak256("UnfreezeAddress(address)")
topic1addr (address)indexed: filterable

Parameters

Arguments and where they sit in the log

Indexed arguments travel as topics and can be filtered cheaply; the others are ABI-encoded together in the data.

Name	Type	In the log
addr	address	topic1

Solidity declaration

event UnfreezeAddress(address indexed addr);

Canonical signature

UnfreezeAddress(address)

topic0

0x150465b020dfc06a59269da94ed66db9b65a516cf4fdd5f583b0f12752339bbe

Ready-made alerts

Get an alert on UnfreezeAddress

Each rule opens with the contract and the conditions filled in. Sign in, pick your chat and click Create.

Ready-made rule · Paxos Gold (PAXG)Paxos Gold freezes

Ready-made rule · Paxos Gold (PAXG)Alert on every UnfreezeAddress

Ready-made rule · Any contractAlert on UnfreezeAddress from a contract you pick

Who emits it

Contracts we list that emit UnfreezeAddress

Any other contract with the same signature emits a log with the same topic0.

Paxos Gold (PAXG)

0x45804880de22913dafe09f4980848ece6ecbaf78

Tracker: PAXG mint & burn alerts

Code

Read UnfreezeAddress logs in code

The same filter in viem, ethers and plain JSON-RPC, and the Solidity that emits it. The address is Paxos Gold (PAXG), a contract we list that emits it.

viem

import { createPublicClient, http, parseAbiItem } from "viem"
import { mainnet } from "viem/chains"

const client = createPublicClient({ chain: mainnet, transport: http() })

const logs = await client.getLogs({
  address: "0x45804880de22913dafe09f4980848ece6ecbaf78",
  event: parseAbiItem("event UnfreezeAddress(address indexed addr)"),
  fromBlock: "latest",
})

for (const log of logs) console.log(log.args) // { addr }

ethers v6

import { Interface, JsonRpcProvider } from "ethers"

const provider = new JsonRpcProvider(process.env.RPC_URL)
const iface = new Interface(["event UnfreezeAddress(address indexed addr)"])

const logs = await provider.getLogs({
  address: "0x45804880de22913dafe09f4980848ece6ecbaf78",
  topics: [iface.getEvent("UnfreezeAddress")!.topicHash],
})

for (const log of logs) console.log(iface.parseLog(log)?.args)

JSON-RPC (eth_getLogs)

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "eth_getLogs",
  "params": [
    {
      "address": "0x45804880de22913dafe09f4980848ece6ecbaf78",
      "topics": [
        "0x150465b020dfc06a59269da94ed66db9b65a516cf4fdd5f583b0f12752339bbe"
      ],
      "fromBlock": "latest"
    }
  ]
}

Solidity

event UnfreezeAddress(address indexed addr);

// inside a function:
emit UnfreezeAddress(addr);

Example

An example UnfreezeAddress log, encoded and decoded

Placeholder values, not a real transaction: how each argument is stored in the topics and the data, and what decoding gives back.

Encoded (as the node returns it)

topic0keccak256("UnfreezeAddress(address)")0x150465b020dfc06a59269da94ed66db9b65a516cf4fdd5f583b0f12752339bbe
topic1addr0x0000000000000000000000001111111111111111111111111111111111111111
data0x

Decoded with the ABI

addraddress · indexed0x1111111111111111111111111111111111111111

FAQ

Frequently asked questions

What is the topic0 of the UnfreezeAddress (Paxos V2) event?

0x150465b020dfc06a59269da94ed66db9b65a516cf4fdd5f583b0f12752339bbe: the keccak-256 hash of UnfreezeAddress(address).

Which UnfreezeAddress (Paxos V2) arguments are indexed?

addr is indexed and sit in the log's topics.

How do I get an alert when a contract emits UnfreezeAddress (Paxos V2)?

Open one of the ready-made rules on this page, or add any contract and pick UnfreezeAddress (Paxos V2) from the event list. Conditions can be set on indexed and non-indexed arguments, and each alert names the contract and links to the transaction.

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