# Wormhole NTT

Markdown version of https://l2beat.com/interop/protocols/wormhole-ntt

## Summary

- Last 24h volume: $2.44 M
- Last 24h transfer count: 609
- Last 24h top path: HyperEVM ↔ Unichain ($1.11 M)
- Last 24h avg. transfer time: 11m 18s
- Last 24h avg. transfer value: $4.02 K
- Last 24h tokens by volume: [HYPE](https://l2beat.com/interop/tokens/aGpJAY/hyperliquid/hype) ($1.18 M), [cUSD](https://l2beat.com/interop/tokens/h38qAk/cusd) ($816.99 K), [MUSD](https://l2beat.com/interop/tokens/ipvxWD/musd) ($207.70 K), and 36 more
- Last 24h top token: [HYPE](https://l2beat.com/interop/tokens/aGpJAY/hyperliquid/hype) ($1.18 M volume, 78 transfers)
- Last 24h transfer size: Under $100: 98 transfers, $100-$1K: 366 transfers, $1K-$10K: 88 transfers, $10K-$100K: 56 transfers, Over $100K: 0 transfers (min under $0.01, average $4.02 K, max $90.09 K)
- Last 24h transfer type distribution: Lock & Mint: $1.30 M, Burn & Mint: $1.14 M

### About

Multichain token framework using the Wormhole message bridge.

## Volume and flows

### Top chains by volume (last 24h)

A transfer counts toward the volume of both its source and its destination chain, so the chain volumes add up to more than the total volume.

- HyperEVM: $1.18 M (78 transfers)
- Unichain: $1.11 M (74 transfers)
- Monad: $603.46 K (42 transfers)
- and 10 more

### Top routes by volume (last 24h)

- HyperEVM → Unichain: $1.11 M
- Celo → Monad: $270.21 K
- Ethereum → Base: $219.07 K
- Monad → Polygon PoS: $144.68 K
- Polygon PoS → Celo: $141.32 K
- Monad → Celo: $87.19 K
- Polygon PoS → Monad: $86.78 K
- Celo → Polygon PoS: $86.78 K
- HyperEVM → Base: $63.99 K
- Base → BNB Smart Chain: $37.53 K

The flows between chains are an interactive graph on [the HTML page](https://l2beat.com/interop/protocols/wormhole-ntt#interop-volume).

## Description

Multichain token framework using the Wormhole message bridge.

### Architecture
The Wormhole messaging protocol consists of a `WormholeCore` contract on each supported chain. Application contracts like the Token Bridge, the multichain token framework *NTT* ('native token transfers') and the Mayan intent framework contracts are each connected to it. The token bridge is a lock-minting token bridge, NTT is a customizable multichain token framework and Mayan supports stablecoin transfers and crosschain asset swaps of any kind as an intent protocol.

### Crosschain oracle and validation
Wormhole uses the same validators for its core messaging protocol on all supported chains. They are called *guardians* and validate crosschain messages with a 13/19 threshold. Guardians are external validator companies who are expected to run their own nodes of all chains they validate on, but they also delegate the running of full nodes to others for smaller chains.

### Upgradeability
The core protocol and token bridge contracts are upgradeable by the same *guardians* who validate crosschain messages. Application-level contracts can have custom upgradeability.

### Monitoring
Wormhole provides a [block explorer](https://wormholescan.io/) which is mostly intended for users and researchers tracking crosschain transactions and for aggregate metrics. As for [security and monitoring tools](https://wormhole-foundation.github.io/wormhole-dashboard/#/?endpoint=Mainnet), Wormhole offers *Governor* a global token flow monitoring layer that Guardians can use to identify suspicious transfers before signing them. *Global Accountant* tracks the circulating supply of *WTT* and *NTT* assets on all chains and alerts Guardians if a transaction would increase the supply.

## Top tokens by volume

The interactive tokens table is shown on [the HTML page](https://l2beat.com/interop/protocols/wormhole-ntt#interop-tokens).

## Transfers

The interactive transfers table is shown on [the HTML page](https://l2beat.com/interop/protocols/wormhole-ntt#interop-transfers).

## Permissions

### Ethereum

#### Actors

##### TokenBridge

Addresses: [0x3ee18B2214AFF97000D974cf647E7C347E8fa585](https://etherscan.io/address/0x3ee18B2214AFF97000D974cf647E7C347E8fa585)

Wormhole Token Bridge on Ethereum. It escrows Ethereum-native tokens and mints or burns wrapped assets such as WSOL after Wormhole Core verifies Guardian-signed VAAs. WSOL has no Ethereum-side escrow because it is a wrapped asset on Ethereum.
- Can interact with WSOL
  - mint or burn WSOL after the Token Bridge accepts a valid Wormhole transfer VAA
  - update WSOL metadata after the Token Bridge accepts a valid Wormhole attestation VAA

##### WormholeCore

Addresses: [0x98f3c9e6E3fAce36bAAd05FE09d375Ef1464288B](https://etherscan.io/address/0x98f3c9e6E3fAce36bAAd05FE09d375Ef1464288B)

A Multisig with 13/19 threshold.
Wormhole Core Bridge on Ethereum. It verifies VAAs signed by the active Wormhole Guardian set and is the security root for Wormhole application contracts on Ethereum, including the Token Bridge by storing the active Guardian set.
- Can upgrade **with no delay**
  - TokenBridge
- Can interact with TokenBridge
  - validate incoming transfers and register remote bridge peers

Participants (19): [0x5893B5A76c3f739645648885bDCcC06cd70a3Cd3](https://l2beat.com/interop/protocols/wormhole-ntt#EOA-1,-EOA-2,-EOA-3,-EOA-4,-EOA-5,-EOA-6,-EOA-7,-EOA-8,-EOA-9,-EOA-10,-EOA-11,-EOA-12,-EOA-13,-EOA-14,-EOA-15,-EOA-16,-EOA-17,-EOA-18-and-EOA-19) (EOA 7), [0xfF6CB952589BDE862c25Ef4392132fb9D4A42157](https://l2beat.com/interop/protocols/wormhole-ntt#EOA-1,-EOA-2,-EOA-3,-EOA-4,-EOA-5,-EOA-6,-EOA-7,-EOA-8,-EOA-9,-EOA-10,-EOA-11,-EOA-12,-EOA-13,-EOA-14,-EOA-15,-EOA-16,-EOA-17,-EOA-18-and-EOA-19) (EOA 19), [0x114De8460193bdf3A2fCf81f86a09765F4762fD1](https://l2beat.com/interop/protocols/wormhole-ntt#EOA-1,-EOA-2,-EOA-3,-EOA-4,-EOA-5,-EOA-6,-EOA-7,-EOA-8,-EOA-9,-EOA-10,-EOA-11,-EOA-12,-EOA-13,-EOA-14,-EOA-15,-EOA-16,-EOA-17,-EOA-18-and-EOA-19) (EOA 3), [0x107A0086b32d7A0977926A205131d8731D39cbEB](https://l2beat.com/interop/protocols/wormhole-ntt#EOA-1,-EOA-2,-EOA-3,-EOA-4,-EOA-5,-EOA-6,-EOA-7,-EOA-8,-EOA-9,-EOA-10,-EOA-11,-EOA-12,-EOA-13,-EOA-14,-EOA-15,-EOA-16,-EOA-17,-EOA-18-and-EOA-19) (EOA 2), [0x8C82B2fd82FaeD2711d59AF0F2499D16e726f6b2](https://l2beat.com/interop/protocols/wormhole-ntt#EOA-1,-EOA-2,-EOA-3,-EOA-4,-EOA-5,-EOA-6,-EOA-7,-EOA-8,-EOA-9,-EOA-10,-EOA-11,-EOA-12,-EOA-13,-EOA-14,-EOA-15,-EOA-16,-EOA-17,-EOA-18-and-EOA-19) (EOA 10), [0x42579bFFbCF4276E290aB8E4C162bd4052b97970](https://l2beat.com/interop/protocols/wormhole-ntt#EOA-1,-EOA-2,-EOA-3,-EOA-4,-EOA-5,-EOA-6,-EOA-7,-EOA-8,-EOA-9,-EOA-10,-EOA-11,-EOA-12,-EOA-13,-EOA-14,-EOA-15,-EOA-16,-EOA-17,-EOA-18-and-EOA-19) (EOA 6), [0x938f104AEb5581293216ce97d771e0CB721221B1](https://l2beat.com/interop/protocols/wormhole-ntt#EOA-1,-EOA-2,-EOA-3,-EOA-4,-EOA-5,-EOA-6,-EOA-7,-EOA-8,-EOA-9,-EOA-10,-EOA-11,-EOA-12,-EOA-13,-EOA-14,-EOA-15,-EOA-16,-EOA-17,-EOA-18-and-EOA-19) (EOA 11), [0xF3ea0AD4FFB5a178AE4EBc21861651B25BdcbB91](https://l2beat.com/interop/protocols/wormhole-ntt#EOA-1,-EOA-2,-EOA-3,-EOA-4,-EOA-5,-EOA-6,-EOA-7,-EOA-8,-EOA-9,-EOA-10,-EOA-11,-EOA-12,-EOA-13,-EOA-14,-EOA-15,-EOA-16,-EOA-17,-EOA-18-and-EOA-19) (EOA 17), [0x9D16870160e703324D057c3361c34C5beFBa2c34](https://l2beat.com/interop/protocols/wormhole-ntt#EOA-1,-EOA-2,-EOA-3,-EOA-4,-EOA-5,-EOA-6,-EOA-7,-EOA-8,-EOA-9,-EOA-10,-EOA-11,-EOA-12,-EOA-13,-EOA-14,-EOA-15,-EOA-16,-EOA-17,-EOA-18-and-EOA-19) (EOA 12), [0x000aC0076727b35FBea2dAc28fEE5cCB0fEA768e](https://l2beat.com/interop/protocols/wormhole-ntt#EOA-1,-EOA-2,-EOA-3,-EOA-4,-EOA-5,-EOA-6,-EOA-7,-EOA-8,-EOA-9,-EOA-10,-EOA-11,-EOA-12,-EOA-13,-EOA-14,-EOA-15,-EOA-16,-EOA-17,-EOA-18-and-EOA-19) (EOA 1), [0xAF45Ced136b9D9e24903464AE889F5C8a723FC14](https://l2beat.com/interop/protocols/wormhole-ntt#EOA-1,-EOA-2,-EOA-3,-EOA-4,-EOA-5,-EOA-6,-EOA-7,-EOA-8,-EOA-9,-EOA-10,-EOA-11,-EOA-12,-EOA-13,-EOA-14,-EOA-15,-EOA-16,-EOA-17,-EOA-18-and-EOA-19) (EOA 14), [0xf93124b7c738843CBB89E864c862c38cddCccF95](https://l2beat.com/interop/protocols/wormhole-ntt#EOA-1,-EOA-2,-EOA-3,-EOA-4,-EOA-5,-EOA-6,-EOA-7,-EOA-8,-EOA-9,-EOA-10,-EOA-11,-EOA-12,-EOA-13,-EOA-14,-EOA-15,-EOA-16,-EOA-17,-EOA-18-and-EOA-19) (EOA 18), [0xD2CC37A4dc036a8D232b48f62cDD4731412f4890](https://l2beat.com/interop/protocols/wormhole-ntt#EOA-1,-EOA-2,-EOA-3,-EOA-4,-EOA-5,-EOA-6,-EOA-7,-EOA-8,-EOA-9,-EOA-10,-EOA-11,-EOA-12,-EOA-13,-EOA-14,-EOA-15,-EOA-16,-EOA-17,-EOA-18-and-EOA-19) (EOA 15), [0xDA798F6896A3331F64b48c12D1D57Fd9cbe70811](https://l2beat.com/interop/protocols/wormhole-ntt#EOA-1,-EOA-2,-EOA-3,-EOA-4,-EOA-5,-EOA-6,-EOA-7,-EOA-8,-EOA-9,-EOA-10,-EOA-11,-EOA-12,-EOA-13,-EOA-14,-EOA-15,-EOA-16,-EOA-17,-EOA-18-and-EOA-19) (EOA 16), [0xaE565927Bb8dB25CD8Bf3e7BB663D70023e4Ea78](https://l2beat.com/interop/protocols/wormhole-ntt#EOA-1,-EOA-2,-EOA-3,-EOA-4,-EOA-5,-EOA-6,-EOA-7,-EOA-8,-EOA-9,-EOA-10,-EOA-11,-EOA-12,-EOA-13,-EOA-14,-EOA-15,-EOA-16,-EOA-17,-EOA-18-and-EOA-19) (EOA 13), [0x3F851Ad586A47ceF8d04748f33ab0D71395f06b4](https://l2beat.com/interop/protocols/wormhole-ntt#EOA-1,-EOA-2,-EOA-3,-EOA-4,-EOA-5,-EOA-6,-EOA-7,-EOA-8,-EOA-9,-EOA-10,-EOA-11,-EOA-12,-EOA-13,-EOA-14,-EOA-15,-EOA-16,-EOA-17,-EOA-18-and-EOA-19) (EOA 5), [0x178e21ad2E77AE06711549CFBB1f9c7a9d8096e8](https://l2beat.com/interop/protocols/wormhole-ntt#EOA-1,-EOA-2,-EOA-3,-EOA-4,-EOA-5,-EOA-6,-EOA-7,-EOA-8,-EOA-9,-EOA-10,-EOA-11,-EOA-12,-EOA-13,-EOA-14,-EOA-15,-EOA-16,-EOA-17,-EOA-18-and-EOA-19) (EOA 4), [0x7899cEAB1DC961Dae9defDB7A4f521269a5448FC](https://l2beat.com/interop/protocols/wormhole-ntt#EOA-1,-EOA-2,-EOA-3,-EOA-4,-EOA-5,-EOA-6,-EOA-7,-EOA-8,-EOA-9,-EOA-10,-EOA-11,-EOA-12,-EOA-13,-EOA-14,-EOA-15,-EOA-16,-EOA-17,-EOA-18-and-EOA-19) (EOA 9), [0x61D9800f9FCb4160FB0C6cf3A0902592bAC2B434](https://l2beat.com/interop/protocols/wormhole-ntt#EOA-1,-EOA-2,-EOA-3,-EOA-4,-EOA-5,-EOA-6,-EOA-7,-EOA-8,-EOA-9,-EOA-10,-EOA-11,-EOA-12,-EOA-13,-EOA-14,-EOA-15,-EOA-16,-EOA-17,-EOA-18-and-EOA-19) (EOA 8)

##### 19 EOAs

Addresses: [0x000aC0076727b35FBea2dAc28fEE5cCB0fEA768e](https://etherscan.io/address/0x000aC0076727b35FBea2dAc28fEE5cCB0fEA768e) (EOA 1), [0x107A0086b32d7A0977926A205131d8731D39cbEB](https://etherscan.io/address/0x107A0086b32d7A0977926A205131d8731D39cbEB) (EOA 2), [0x114De8460193bdf3A2fCf81f86a09765F4762fD1](https://etherscan.io/address/0x114De8460193bdf3A2fCf81f86a09765F4762fD1) (EOA 3), [0x178e21ad2E77AE06711549CFBB1f9c7a9d8096e8](https://etherscan.io/address/0x178e21ad2E77AE06711549CFBB1f9c7a9d8096e8) (EOA 4), [0x3F851Ad586A47ceF8d04748f33ab0D71395f06b4](https://etherscan.io/address/0x3F851Ad586A47ceF8d04748f33ab0D71395f06b4) (EOA 5), [0x42579bFFbCF4276E290aB8E4C162bd4052b97970](https://etherscan.io/address/0x42579bFFbCF4276E290aB8E4C162bd4052b97970) (EOA 6), [0x5893B5A76c3f739645648885bDCcC06cd70a3Cd3](https://etherscan.io/address/0x5893B5A76c3f739645648885bDCcC06cd70a3Cd3) (EOA 7), [0x61D9800f9FCb4160FB0C6cf3A0902592bAC2B434](https://etherscan.io/address/0x61D9800f9FCb4160FB0C6cf3A0902592bAC2B434) (EOA 8), [0x7899cEAB1DC961Dae9defDB7A4f521269a5448FC](https://etherscan.io/address/0x7899cEAB1DC961Dae9defDB7A4f521269a5448FC) (EOA 9), [0x8C82B2fd82FaeD2711d59AF0F2499D16e726f6b2](https://etherscan.io/address/0x8C82B2fd82FaeD2711d59AF0F2499D16e726f6b2) (EOA 10), [0x938f104AEb5581293216ce97d771e0CB721221B1](https://etherscan.io/address/0x938f104AEb5581293216ce97d771e0CB721221B1) (EOA 11), [0x9D16870160e703324D057c3361c34C5beFBa2c34](https://etherscan.io/address/0x9D16870160e703324D057c3361c34C5beFBa2c34) (EOA 12), [0xaE565927Bb8dB25CD8Bf3e7BB663D70023e4Ea78](https://etherscan.io/address/0xaE565927Bb8dB25CD8Bf3e7BB663D70023e4Ea78) (EOA 13), [0xAF45Ced136b9D9e24903464AE889F5C8a723FC14](https://etherscan.io/address/0xAF45Ced136b9D9e24903464AE889F5C8a723FC14) (EOA 14), [0xD2CC37A4dc036a8D232b48f62cDD4731412f4890](https://etherscan.io/address/0xD2CC37A4dc036a8D232b48f62cDD4731412f4890) (EOA 15), [0xDA798F6896A3331F64b48c12D1D57Fd9cbe70811](https://etherscan.io/address/0xDA798F6896A3331F64b48c12D1D57Fd9cbe70811) (EOA 16), [0xF3ea0AD4FFB5a178AE4EBc21861651B25BdcbB91](https://etherscan.io/address/0xF3ea0AD4FFB5a178AE4EBc21861651B25BdcbB91) (EOA 17), [0xf93124b7c738843CBB89E864c862c38cddCccF95](https://etherscan.io/address/0xf93124b7c738843CBB89E864c862c38cddCccF95) (EOA 18), [0xfF6CB952589BDE862c25Ef4392132fb9D4A42157](https://etherscan.io/address/0xfF6CB952589BDE862c25Ef4392132fb9D4A42157) (EOA 19)

Member of WormholeCore.
- Can upgrade **with no delay**
  - WormholeCore
- Can interact with WormholeCore
  - validate incoming crosschain messages, rotate the guardian set, change and withdraw fees

## Smart contracts

### Ethereum

#### WSOL

Addresses: [0xD31a59c85aE9D8edEFeC411D448f90841571b89c](https://etherscan.io/address/0xD31a59c85aE9D8edEFeC411D448f90841571b89c#code), [0x0fD04a68d3c3A692d6Fa30384D1A87Ef93554eE6](https://etherscan.io/address/0x0fD04a68d3c3A692d6Fa30384D1A87Ef93554eE6#code) (Implementation (Upgradable)), [0x0000000000000000000000000000000000000000](https://etherscan.io/address/0x0000000000000000000000000000000000000000#code) (Admin)

**Past upgrades** (Count of upgrades: 9, Last upgrade: 3y ago, Avg upgrade interval: 6mo 6d)

- 2023-10-17 19:13 UTC, upgrade of [WSOL](https://etherscan.io/address/0xD31a59c85aE9D8edEFeC411D448f90841571b89c#code): transaction [0x5423123fcd6beecabec2a2b7d37596af24fcc91a4a64b8c0156579d3c58ef1a7](https://etherscan.io/tx/0x5423123fcd6beecabec2a2b7d37596af24fcc91a4a64b8c0156579d3c58ef1a7), implementations: [0x381752f5458282d317d12C30D2Bd4D6E1FD8841e](https://etherscan.io/address/0x381752f5458282d317d12C30D2Bd4D6E1FD8841e#code) ([diff](https://disco.l2beat.com/diff/eth:0x299b4F6066d231521d11FAE8331fb1A4fe794F58/eth:0x381752f5458282d317d12C30D2Bd4D6E1FD8841e))
- 2022-09-20 16:24 UTC, upgrade of [WSOL](https://etherscan.io/address/0xD31a59c85aE9D8edEFeC411D448f90841571b89c#code): transaction [0xf7f4e4b0a70a1f043074418fe6a394d05c0438e0a79f40000fdd8b648ce2e473](https://etherscan.io/tx/0xf7f4e4b0a70a1f043074418fe6a394d05c0438e0a79f40000fdd8b648ce2e473), implementations: [0x299b4F6066d231521d11FAE8331fb1A4fe794F58](https://etherscan.io/address/0x299b4F6066d231521d11FAE8331fb1A4fe794F58#code) ([diff](https://disco.l2beat.com/diff/eth:0xADE06bc75Dc1FC3fB7442e0CFb8Ca544B23aF789/eth:0x299b4F6066d231521d11FAE8331fb1A4fe794F58))
- 2022-09-12 15:54 UTC, upgrade of [WSOL](https://etherscan.io/address/0xD31a59c85aE9D8edEFeC411D448f90841571b89c#code): transaction [0xb2146071324342840895340d0937e72c79e662a406d08bdca2c4452ea988dda3](https://etherscan.io/tx/0xb2146071324342840895340d0937e72c79e662a406d08bdca2c4452ea988dda3), implementations: [0xADE06bc75Dc1FC3fB7442e0CFb8Ca544B23aF789](https://etherscan.io/address/0xADE06bc75Dc1FC3fB7442e0CFb8Ca544B23aF789#code) ([diff](https://disco.l2beat.com/diff/eth:0xfA71B241B168d2876722c6D8856d3E4F311B8C1e/eth:0xADE06bc75Dc1FC3fB7442e0CFb8Ca544B23aF789))
- 2022-09-01 14:23 UTC, upgrade of [WSOL](https://etherscan.io/address/0xD31a59c85aE9D8edEFeC411D448f90841571b89c#code): transaction [0x681919e52611294f53e270f03a6615fe624deebfba3aa6de7bc842bd64b1d3b9](https://etherscan.io/tx/0x681919e52611294f53e270f03a6615fe624deebfba3aa6de7bc842bd64b1d3b9), implementations: [0xfA71B241B168d2876722c6D8856d3E4F311B8C1e](https://etherscan.io/address/0xfA71B241B168d2876722c6D8856d3E4F311B8C1e#code) ([diff](https://disco.l2beat.com/diff/eth:0x76364611e457b1f97cd58FfC332DDC7561a193F6/eth:0xfA71B241B168d2876722c6D8856d3E4F311B8C1e))
- 2022-08-24 17:35 UTC, upgrade of [WSOL](https://etherscan.io/address/0xD31a59c85aE9D8edEFeC411D448f90841571b89c#code): transaction [0x3bd3c23ca32a38b5ca289b6b72585a7ea8432510c4bad5ad6f99ba2a672fae02](https://etherscan.io/tx/0x3bd3c23ca32a38b5ca289b6b72585a7ea8432510c4bad5ad6f99ba2a672fae02), implementations: [0x76364611e457b1f97cd58FfC332DDC7561a193F6](https://etherscan.io/address/0x76364611e457b1f97cd58FfC332DDC7561a193F6#code) ([diff](https://disco.l2beat.com/diff/eth:0xB203b2057E2F08aDCE8F73Cc99709Ffdd8EDffEa/eth:0x76364611e457b1f97cd58FfC332DDC7561a193F6))
- 2022-07-08 17:04 UTC, upgrade of [WSOL](https://etherscan.io/address/0xD31a59c85aE9D8edEFeC411D448f90841571b89c#code): transaction [0xbaee117671f50a2ab1b37a6cfdd96cae9210311fc37feca9b9fdf18c69ed4943](https://etherscan.io/tx/0xbaee117671f50a2ab1b37a6cfdd96cae9210311fc37feca9b9fdf18c69ed4943), implementations: [0xB203b2057E2F08aDCE8F73Cc99709Ffdd8EDffEa](https://etherscan.io/address/0xB203b2057E2F08aDCE8F73Cc99709Ffdd8EDffEa#code) ([diff](https://disco.l2beat.com/diff/eth:0x91175AEE6dAc41B9C1f749ded077568aD93B84Ca/eth:0xB203b2057E2F08aDCE8F73Cc99709Ffdd8EDffEa))
- 2022-01-27 16:35 UTC, upgrade of [WSOL](https://etherscan.io/address/0xD31a59c85aE9D8edEFeC411D448f90841571b89c#code): transaction [0xd52dad3dcd2412fed086ff08a67b8169ba84be9b4ab20c4ec779057e41664d67](https://etherscan.io/tx/0xd52dad3dcd2412fed086ff08a67b8169ba84be9b4ab20c4ec779057e41664d67), implementations: [0x91175AEE6dAc41B9C1f749ded077568aD93B84Ca](https://etherscan.io/address/0x91175AEE6dAc41B9C1f749ded077568aD93B84Ca#code) ([diff](https://disco.l2beat.com/diff/eth:0x67145cdb0d69678e9c48106F646C1b7ef69813A4/eth:0x91175AEE6dAc41B9C1f749ded077568aD93B84Ca))
- 2021-11-01 16:56 UTC, upgrade of [WSOL](https://etherscan.io/address/0xD31a59c85aE9D8edEFeC411D448f90841571b89c#code): transaction [0xda175307299342c37d73da16d4ff725efc2548646b354a436f13cf9d7294dc9c](https://etherscan.io/tx/0xda175307299342c37d73da16d4ff725efc2548646b354a436f13cf9d7294dc9c), implementations: [0x67145cdb0d69678e9c48106F646C1b7ef69813A4](https://etherscan.io/address/0x67145cdb0d69678e9c48106F646C1b7ef69813A4#code) ([diff](https://disco.l2beat.com/diff/eth:0x51e9027eaBE500466cAA0F4Be882afC4446C4eFE/eth:0x67145cdb0d69678e9c48106F646C1b7ef69813A4))
- 2021-09-13 12:26 UTC, upgrade of [WSOL](https://etherscan.io/address/0xD31a59c85aE9D8edEFeC411D448f90841571b89c#code): transaction [0x581152516c6f4e1cc2acd6d1ad5372bd0325835fb53086f364f487086f42223e](https://etherscan.io/tx/0x581152516c6f4e1cc2acd6d1ad5372bd0325835fb53086f364f487086f42223e), implementations: [0x51e9027eaBE500466cAA0F4Be882afC4446C4eFE](https://etherscan.io/address/0x51e9027eaBE500466cAA0F4Be882afC4446C4eFE#code) ([diff](https://disco.l2beat.com/diff/eth:0x6c4c12987303b2c94b2C76c612Fc5F4D2F0360F7/eth:0x51e9027eaBE500466cAA0F4Be882afC4446C4eFE))
- 2021-09-13 12:26 UTC, deployment of [WSOL](https://etherscan.io/address/0xD31a59c85aE9D8edEFeC411D448f90841571b89c#code): transaction [0x581152516c6f4e1cc2acd6d1ad5372bd0325835fb53086f364f487086f42223e](https://etherscan.io/tx/0x581152516c6f4e1cc2acd6d1ad5372bd0325835fb53086f364f487086f42223e), implementations: [0x6c4c12987303b2c94b2C76c612Fc5F4D2F0360F7](https://etherscan.io/address/0x6c4c12987303b2c94b2C76c612Fc5F4D2F0360F7#code)

WSOL is the Wormhole-wrapped ERC20 representation of native SOL on Ethereum. The Token Bridge owns this token and mints or burns it after accepting valid Token Bridge VAAs for the Solana route. The native SOL backing is escrowed on Solana, not Ethereum.
- Roles:
  - **owner**: TokenBridge

#### TokenImplementation

Addresses: [0x0fD04a68d3c3A692d6Fa30384D1A87Ef93554eE6](https://etherscan.io/address/0x0fD04a68d3c3A692d6Fa30384D1A87Ef93554eE6#code)

Wormhole wrapped ERC20 token implementation. When initialized as a wrapped asset, the Token Bridge is the token owner and can mint, burn, and update metadata after accepting valid Token Bridge VAAs. This makes the tokens bridge-owned by default.

The current deployment carries some associated risks:

- Funds can be stolen if a contract receives a malicious code upgrade. There is no delay on code upgrades (CRITICAL).