diff --git a/src/constants/v2Addrs.ts b/src/constants/v2Addrs.ts
index 592d70a..b4e881a 100644
--- a/src/constants/v2Addrs.ts
+++ b/src/constants/v2Addrs.ts
@@ -53,3 +53,17 @@ export const MULTICALL_ADDRESS: AddressMap = {
   [ChainId.BUILDNET]: 'AS1yphCWi7gychZWYPpqrKDiGb6ZacRoji8YYMLHtQ2TSuuQFqLC',
   [ChainId.MAINNET]: 'AS1FJrNBtZ5oXK9y6Wcmiio5AV6rR2UopqqdQWhBH4Fss9JNMySm'
 }
+
+/**
+ * DEX governance SDK
+ */
+
+export const VOTING_ESCROW_ADDRESS: AddressMap = {
+  [ChainId.BUILDNET]: '',
+  [ChainId.MAINNET]: 'AS1q76iSMJ8Dj5gVBVK26y11yuFi9eVzUmTzwf5ANgoypMVcNjXj'
+}
+
+export const VOTER_ADDRESS: AddressMap = {
+  [ChainId.BUILDNET]: '',
+  [ChainId.MAINNET]: 'AS1rg37d1cFXrSXbEaKbGPBKRXahshk6VgvwJXjg48MbyuwM1ea6'
+}
diff --git a/src/contracts/ve.ts b/src/contracts/ve.ts
new file mode 100644
index 0000000..a83f768
--- /dev/null
+++ b/src/contracts/ve.ts
@@ -0,0 +1,179 @@
+import { GlobalPoint, LockedBalance, UserPoint } from '../types/governance'
+import { IBaseContract } from './base'
+import { Args, bytesToStr, byteToBool, U64, U256 } from '@massalabs/massa-web3'
+
+export class IVotingEscrow extends IBaseContract {
+  async ownerOf(tokenId: number): Promise<string> {
+    return this.extract(['idToOwner::' + tokenId]).then((r) => {
+      if (!r[0].length) throw new Error('Not found')
+      return bytesToStr(r[0])
+    })
+  }
+  async balanceOf(user: string): Promise<number> {
+    return this.extract(['ownerToNFTokenCount::' + user]).then((r) => {
+      if (!r[0].length) throw new Error('Not found')
+      return Number(U64.fromBytes(r[0]))
+    })
+  }
+  async getApproved(tokenId: number): Promise<string> {
+    return this.extract(['idToApprovals::' + tokenId]).then((r) => {
+      if (!r[0].length) throw new Error('Not found')
+      return bytesToStr(r[0])
+    })
+  }
+  async isApprovedForAll(owner: string, operator: string): Promise<boolean> {
+    return this.extract(['ownerToOperators::' + owner + operator]).then((r) => {
+      if (!r[0].length) throw new Error('Not found')
+      return byteToBool(r[0])
+    })
+  }
+  async isApprovedOrOwner(spender: string, tokenId: number): Promise<boolean> {
+    return this.read({
+      targetFunction: 'isApprovedOrOwner',
+      parameter: new Args()
+        .addString(spender)
+        .addU64(BigInt(tokenId))
+        .serialize()
+    }).then((r) => byteToBool(r.value))
+  }
+
+  async locked(tokenId: number): Promise<LockedBalance> {
+    return this.read({
+      targetFunction: 'locked',
+      parameter: new Args().addU64(BigInt(tokenId)).serialize()
+    }).then((r) => new LockedBalance().deserialize(r.value).instance)
+  }
+  async userPointHistory(tokenId: number, loc: number): Promise<UserPoint> {
+    return this.read({
+      targetFunction: 'userPointHistory',
+      parameter: new Args()
+        .addU64(BigInt(tokenId))
+        .addU64(BigInt(loc))
+        .serialize()
+    }).then((r) => new UserPoint().deserialize(r.value).instance)
+  }
+  async pointHistory(loc: number): Promise<GlobalPoint> {
+    return this.read({
+      targetFunction: 'pointHistory',
+      parameter: new Args().addU64(BigInt(loc)).serialize()
+    }).then((r) => new GlobalPoint().deserialize(r.value).instance)
+  }
+  async balanceOfNFT(tokenId: number): Promise<bigint> {
+    return this.read({
+      targetFunction: 'balanceOfNFT',
+      parameter: new Args().addU64(BigInt(tokenId)).serialize()
+    }).then((r) => U256.fromBytes(r.value))
+  }
+  async balanceOfNFTAt(tokenId: number, timestamp: number): Promise<bigint> {
+    return this.read({
+      targetFunction: 'balanceOfNFTAt',
+      parameter: new Args()
+        .addU64(BigInt(tokenId))
+        .addU64(BigInt(timestamp))
+        .serialize()
+    }).then((r) => U256.fromBytes(r.value))
+  }
+  async totalSupply(): Promise<bigint> {
+    return this.read({
+      targetFunction: 'totalSupply',
+      parameter: new Args().serialize()
+    }).then((r) => U256.fromBytes(r.value))
+  }
+  async totalSupplyAt(timestamp: number): Promise<bigint> {
+    return this.read({
+      targetFunction: 'totalSupplyAt',
+      parameter: new Args().addU64(BigInt(timestamp)).serialize()
+    }).then((r) => U256.fromBytes(r.value))
+  }
+  async delegates(tokenId: number): Promise<number> {
+    return this.read({
+      targetFunction: 'delegates',
+      parameter: new Args().addU64(BigInt(tokenId)).serialize()
+    }).then((r) => Number(U64.fromBytes(r.value)))
+  }
+
+  async approve(to: string, tokenId: number): Promise<string> {
+    return this.call({
+      targetFunction: 'approve',
+      parameter: new Args().addString(to).addU64(BigInt(tokenId)).serialize()
+    })
+  }
+  async setApprovalForAll(
+    operator: string,
+    approved: boolean
+  ): Promise<string> {
+    return this.call({
+      targetFunction: 'setApprovalForAll',
+      parameter: new Args().addString(operator).addBool(approved).serialize()
+    })
+  }
+  async transferFrom(
+    from: string,
+    to: string,
+    tokenId: number
+  ): Promise<string> {
+    return this.call({
+      targetFunction: 'transferFrom',
+      parameter: new Args()
+        .addString(from)
+        .addString(to)
+        .addU64(BigInt(tokenId))
+        .serialize()
+    })
+  }
+
+  depositFor(tokenId: number, amount: bigint): Promise<string> {
+    return this.call({
+      targetFunction: 'depositFor',
+      parameter: new Args().addU64(BigInt(tokenId)).addU256(amount).serialize()
+    })
+  }
+  createLock(amount: bigint, duration: number): Promise<string> {
+    return this.call({
+      targetFunction: 'createLock',
+      parameter: new Args().addU256(amount).addU64(BigInt(duration)).serialize()
+    })
+  }
+  increaseAmount(tokenId: number, amount: bigint): Promise<string> {
+    return this.call({
+      targetFunction: 'increaseAmount',
+      parameter: new Args().addU64(BigInt(tokenId)).addU256(amount).serialize()
+    })
+  }
+  increaseUnlockTime(tokenId: number, lockDuration: number): Promise<string> {
+    return this.call({
+      targetFunction: 'increaseUnlockTime',
+      parameter: new Args()
+        .addU64(BigInt(tokenId))
+        .addU64(BigInt(lockDuration))
+        .serialize()
+    })
+  }
+  withdraw(tokenId: number): Promise<string> {
+    return this.call({
+      targetFunction: 'withdraw',
+      parameter: new Args().addU64(BigInt(tokenId)).serialize()
+    })
+  }
+  lockPermanent(tokenId: number): Promise<string> {
+    return this.call({
+      targetFunction: 'lockPermanent',
+      parameter: new Args().addU64(BigInt(tokenId)).serialize()
+    })
+  }
+  unlockPermanent(tokenId: number): Promise<string> {
+    return this.call({
+      targetFunction: 'unlockPermanent',
+      parameter: new Args().addU64(BigInt(tokenId)).serialize()
+    })
+  }
+  delegate(delegator: number, delegatee: number): Promise<string> {
+    return this.call({
+      targetFunction: 'delegate',
+      parameter: new Args()
+        .addU64(BigInt(delegator))
+        .addU64(BigInt(delegatee))
+        .serialize()
+    })
+  }
+}
diff --git a/src/contracts/voter.ts b/src/contracts/voter.ts
new file mode 100644
index 0000000..384736a
--- /dev/null
+++ b/src/contracts/voter.ts
@@ -0,0 +1,16 @@
+import { IBaseContract } from './base'
+import { U64 } from '@massalabs/massa-web3'
+
+export class IVoter extends IBaseContract {
+  async lastVoted(tokenIds: number[]): Promise<number[]> {
+    const bs = tokenIds.map((id: number) => `lastVoted::${id}`)
+    return this.extract(bs).then((r) => {
+      const lastVoted: number[] = []
+      r.forEach((item) => {
+        if (!item?.length) return
+        lastVoted.push(Number(U64.fromBytes(item)))
+      })
+      return lastVoted
+    })
+  }
+}
diff --git a/src/types/governance.ts b/src/types/governance.ts
new file mode 100644
index 0000000..b245b74
--- /dev/null
+++ b/src/types/governance.ts
@@ -0,0 +1,119 @@
+import { Args, IDeserializedResult, ISerializable } from '@massalabs/massa-web3'
+
+export class Checkpoint implements ISerializable<Checkpoint> {
+  constructor(
+    public fromTimestamp: number = 0,
+    public owner: string = '',
+    public delegatedBalance: bigint = 0n,
+    public delegatee: number = 0
+  ) {}
+
+  serialize(): Uint8Array {
+    return new Args()
+      .addU64(BigInt(this.fromTimestamp))
+      .addString(this.owner)
+      .addU256(this.delegatedBalance)
+      .addU64(BigInt(this.delegatee))
+      .serialize()
+  }
+
+  deserialize(data: Uint8Array, offset = 0): IDeserializedResult<Checkpoint> {
+    const args = new Args(data, offset)
+    this.fromTimestamp = Number(args.nextU64())
+    this.owner = args.nextString()
+    this.delegatedBalance = args.nextU256()
+    this.delegatee = Number(args.nextU64())
+
+    return { instance: this, offset: args.getOffset() }
+  }
+}
+
+export class LockedBalance implements ISerializable<LockedBalance> {
+  constructor(
+    public amount: bigint = 0n,
+    public end: number = 0,
+    public isPermanent: boolean = false
+  ) {}
+
+  serialize(): Uint8Array {
+    return new Args()
+      .addI128(BigInt(this.amount))
+      .addU64(BigInt(this.end))
+      .addBool(this.isPermanent)
+      .serialize()
+  }
+
+  deserialize(
+    data: Uint8Array,
+    offset = 0
+  ): IDeserializedResult<LockedBalance> {
+    const args = new Args(data, offset)
+    this.amount = args.nextI128()
+    this.end = Number(args.nextU64())
+    this.isPermanent = args.nextBool()
+
+    return { instance: this, offset: args.getOffset() }
+  }
+}
+
+export class UserPoint implements ISerializable<UserPoint> {
+  constructor(
+    public bias: bigint = 0n,
+    public slope: bigint = 0n, // # -dweight / dt
+    public ts: number = 0,
+    public blk: number = 0, // block
+    public permanent: bigint = 0n
+  ) {}
+
+  serialize(): Uint8Array {
+    return new Args()
+      .addI128(this.bias)
+      .addI128(this.slope)
+      .addU64(BigInt(this.ts))
+      .addU64(BigInt(this.blk))
+      .addU256(this.permanent)
+      .serialize()
+  }
+
+  deserialize(data: Uint8Array, offset = 0): IDeserializedResult<UserPoint> {
+    const args = new Args(data, offset)
+    this.bias = args.nextI128()
+    this.slope = args.nextI128()
+    this.ts = Number(args.nextU64())
+    this.blk = Number(args.nextU64())
+    this.permanent = args.nextU256()
+
+    return { instance: this, offset: args.getOffset() }
+  }
+}
+
+export class GlobalPoint implements ISerializable<GlobalPoint> {
+  constructor(
+    public bias: bigint = 0n,
+    public slope: bigint = 0n, // # -dweight / dt
+    public ts: number = 0,
+    public blk: number = 0, // block
+    public permanentLockBalance: bigint = 0n
+  ) {}
+
+  serialize(): Uint8Array {
+    return new Args()
+      .addI128(this.bias)
+      .addI128(this.slope)
+      .addU64(BigInt(this.ts))
+      .addU64(BigInt(this.blk))
+      .addU256(this.permanentLockBalance)
+      .serialize()
+  }
+
+  deserialize(data: Uint8Array, offset = 0): IDeserializedResult<GlobalPoint> {
+    const args = new Args(data, offset)
+    this.bias = args.nextI128()
+    this.slope = args.nextI128()
+    this.ts = Number(args.nextU64())
+    this.blk = Number(args.nextU64())
+    this.permanentLockBalance = args.nextU256()
+
+    return { instance: this, offset: args.getOffset() }
+  }
+}