diff --git a/packages/core/src/signer/btc/signerBtc.ts b/packages/core/src/signer/btc/signerBtc.ts
index 64112a74..cb77de1b 100644
--- a/packages/core/src/signer/btc/signerBtc.ts
+++ b/packages/core/src/signer/btc/signerBtc.ts
@@ -123,4 +123,21 @@ export abstract class SignerBtc extends Signer {
     tx.setWitnessArgsAt(info.position, witness);
     return tx;
   }
+
+  /**
+   * Signs a Partially Signed Bitcoin Transaction (PSBT).
+   *
+   * @param psbtHex - The hex string of PSBT to sign
+   * @returns A promise that resolves to the signed PSBT hex string
+   * @todo Add support for Taproot signing options (useTweakedSigner, etc.)
+   */
+  abstract signPsbt(psbtHex: string): Promise<string>;
+
+  /**
+   * Broadcasts a signed PSBT to the Bitcoin network.
+   *
+   * @param psbtHex - The hex string of signed PSBT to broadcast
+   * @returns A promise that resolves to the transaction ID
+   */
+  abstract pushPsbt(psbtHex: string): Promise<string>;
 }
diff --git a/packages/core/src/signer/btc/signerBtcPublicKeyReadonly.ts b/packages/core/src/signer/btc/signerBtcPublicKeyReadonly.ts
index 50096db7..ba7e9322 100644
--- a/packages/core/src/signer/btc/signerBtcPublicKeyReadonly.ts
+++ b/packages/core/src/signer/btc/signerBtcPublicKeyReadonly.ts
@@ -70,4 +70,12 @@ export class SignerBtcPublicKeyReadonly extends SignerBtc {
   async getBtcPublicKey(): Promise<Hex> {
     return this.publicKey;
   }
+
+  async signPsbt(_: string): Promise<string> {
+    throw new Error("Read-only signer does not support signPsbt");
+  }
+
+  async pushPsbt(_: string): Promise<string> {
+    throw new Error("Read-only signer does not support pushPsbt");
+  }
 }
diff --git a/packages/joy-id/src/btc/index.ts b/packages/joy-id/src/btc/index.ts
index b564119e..ba51bd6a 100644
--- a/packages/joy-id/src/btc/index.ts
+++ b/packages/joy-id/src/btc/index.ts
@@ -25,6 +25,16 @@ export class BitcoinSigner extends ccc.SignerBtc {
       throw new Error("Not connected");
     }
 
+    // Additional validation to ensure connection has valid address
+    if (
+      !this.connection.address ||
+      typeof this.connection.address !== "string"
+    ) {
+      throw new Error(
+        "Invalid connection - missing or invalid Bitcoin address",
+      );
+    }
+
     return this.connection;
   }
 
@@ -198,4 +208,65 @@ export class BitcoinSigner extends ccc.SignerBtc {
     );
     return signature;
   }
+
+  /**
+   * Signs a PSBT using JoyID wallet.
+   *
+   * @param psbtHex - The hex string of PSBT to sign
+   * @returns A promise that resolves to the signed PSBT hex string
+   */
+  async signPsbt(psbtHex: string): Promise<string> {
+    const { address } = await this.assertConnection();
+
+    const config = this.getConfig();
+    const { tx: signedPsbtHex } = await createPopup(
+      buildJoyIDURL(
+        {
+          ...config,
+          tx: psbtHex,
+          signerAddress: address,
+          autoFinalized: true,
+        },
+        "popup",
+        "/sign-psbt",
+      ),
+      { ...config, type: DappRequestType.SignPsbt },
+    );
+
+    return signedPsbtHex;
+  }
+
+  /**
+   * Signs and broadcasts a PSBT to the Bitcoin network using JoyID wallet.
+   *
+   * This method combines both signing and broadcasting in a single operation.
+   *
+   * @param psbtHex - The hex string of PSBT to sign and broadcast
+   * @returns A promise that resolves to the transaction ID
+   *
+   * @remarks
+   * Use this method directly for sign+broadcast operations to avoid double popups.
+   * While calling signPsbt() then pushPsbt() will still work, it triggers two popups and requires double signing.
+   */
+  async pushPsbt(psbtHex: string): Promise<string> {
+    const { address } = await this.assertConnection();
+
+    const config = this.getConfig();
+    const { tx: txid } = await createPopup(
+      buildJoyIDURL(
+        {
+          ...config,
+          tx: psbtHex,
+          signerAddress: address,
+          autoFinalized: true, // sendPsbt always finalizes
+          isSend: true,
+        },
+        "popup",
+        "/sign-psbt",
+      ),
+      { ...config, type: DappRequestType.SignPsbt }, // Use SignPsbt type for both operations
+    );
+
+    return txid;
+  }
 }
diff --git a/packages/okx/src/advancedBarrel.ts b/packages/okx/src/advancedBarrel.ts
index 4704b662..bdd6b3e0 100644
--- a/packages/okx/src/advancedBarrel.ts
+++ b/packages/okx/src/advancedBarrel.ts
@@ -2,8 +2,21 @@ import { Nip07A } from "@ckb-ccc/nip07/advanced";
 import { UniSatA } from "@ckb-ccc/uni-sat/advanced";
 
 export interface BitcoinProvider
-  extends Pick<UniSatA.Provider, "on" | "removeListener" | "signMessage">,
-    Partial<Omit<UniSatA.Provider, "on" | "removeListener" | "signMessage">> {
+  extends Pick<
+      UniSatA.Provider,
+      "on" | "removeListener" | "signMessage" | "signPsbt" | "pushPsbt"
+    >,
+    Partial<
+      Omit<
+        UniSatA.Provider,
+        | "on"
+        | "removeListener"
+        | "signMessage"
+        | "signPsbt"
+        | "pushPsbt"
+        | "pushTx"
+      >
+    > {
   connect?(): Promise<{
     address: string;
     publicKey: string;
diff --git a/packages/okx/src/btc/index.ts b/packages/okx/src/btc/index.ts
index 3ef023d9..400d591d 100644
--- a/packages/okx/src/btc/index.ts
+++ b/packages/okx/src/btc/index.ts
@@ -176,4 +176,24 @@ export class BitcoinSigner extends ccc.SignerBtc {
 
     return this.provider.signMessage(challenge, "ecdsa");
   }
+
+  /**
+   * Signs a PSBT using OKX wallet.
+   *
+   * @param psbtHex - The hex string of PSBT to sign
+   * @returns A promise that resolves to the signed PSBT hex string
+   */
+  async signPsbt(psbtHex: string): Promise<string> {
+    return this.provider.signPsbt(psbtHex);
+  }
+
+  /**
+   * Broadcasts a signed PSBT to the Bitcoin network.
+   *
+   * @param psbtHex - The hex string of signed PSBT to broadcast
+   * @returns A promise that resolves to the transaction ID
+   */
+  async pushPsbt(psbtHex: string): Promise<string> {
+    return this.provider.pushPsbt(psbtHex);
+  }
 }
diff --git a/packages/uni-sat/src/advancedBarrel.ts b/packages/uni-sat/src/advancedBarrel.ts
index e6ae56b5..612c6273 100644
--- a/packages/uni-sat/src/advancedBarrel.ts
+++ b/packages/uni-sat/src/advancedBarrel.ts
@@ -2,6 +2,23 @@
  * Interface representing a provider for interacting with accounts and signing messages.
  */
 export interface Provider {
+  /**
+   * Signs a PSBT using UniSat wallet.
+   *
+   * @param psbtHex - The hex string of PSBT to sign
+   * @returns A promise that resolves to the signed PSBT hex string
+   * @todo Add support for Taproot signing options (useTweakedSigner, etc.)
+   */
+  signPsbt(psbtHex: string): Promise<string>;
+
+  /**
+   * Broadcasts a signed PSBT to the Bitcoin network.
+   *
+   * @param psbtHex - The hex string of signed PSBT to broadcast
+   * @returns A promise that resolves to the transaction ID
+   */
+  pushPsbt(psbtHex: string): Promise<string>;
+
   /**
    * Requests user accounts.
    * @returns A promise that resolves to an array of account addresses.
diff --git a/packages/uni-sat/src/signer.ts b/packages/uni-sat/src/signer.ts
index 653bba8e..109db82e 100644
--- a/packages/uni-sat/src/signer.ts
+++ b/packages/uni-sat/src/signer.ts
@@ -150,4 +150,24 @@ export class Signer extends ccc.SignerBtc {
 
     return this.provider.signMessage(challenge, "ecdsa");
   }
+
+  /**
+   * Signs a PSBT using UniSat wallet.
+   *
+   * @param psbtHex - The hex string of PSBT to sign
+   * @returns A promise that resolves to the signed PSBT hex string
+   */
+  async signPsbt(psbtHex: string): Promise<string> {
+    return this.provider.signPsbt(psbtHex);
+  }
+
+  /**
+   * Broadcasts a signed PSBT to the Bitcoin network.
+   *
+   * @param psbtHex - The hex string of signed PSBT to broadcast
+   * @returns A promise that resolves to the transaction ID
+   */
+  async pushPsbt(psbtHex: string): Promise<string> {
+    return this.provider.pushPsbt(psbtHex);
+  }
 }
diff --git a/packages/utxo-global/src/btc/index.ts b/packages/utxo-global/src/btc/index.ts
index 57e73594..c123b2a9 100644
--- a/packages/utxo-global/src/btc/index.ts
+++ b/packages/utxo-global/src/btc/index.ts
@@ -127,4 +127,26 @@ export class SignerBtc extends ccc.SignerBtc {
       this.accountCache ?? (await this.getBtcAccount()),
     );
   }
+
+  /**
+   * Signs a PSBT using UTXO Global wallet.
+   *
+   * @param psbtHex - The hex string of PSBT to sign
+   * @returns A promise that resolves to the signed PSBT hex string
+   * @todo Implement PSBT signing with UTXO Global
+   */
+  async signPsbt(_: string): Promise<string> {
+    throw new Error("UTXO Global PSBT signing not implemented yet");
+  }
+
+  /**
+   * Broadcasts a signed PSBT to the Bitcoin network.
+   *
+   * @param psbtHex - The hex string of signed PSBT to broadcast
+   * @returns A promise that resolves to the transaction ID
+   * @todo Implement PSBT broadcasting with UTXO Global
+   */
+  async pushPsbt(_: string): Promise<string> {
+    throw new Error("UTXO Global PSBT broadcasting not implemented yet");
+  }
 }
diff --git a/packages/xverse/src/signer.ts b/packages/xverse/src/signer.ts
index bf6df9c0..e9fd211b 100644
--- a/packages/xverse/src/signer.ts
+++ b/packages/xverse/src/signer.ts
@@ -167,4 +167,12 @@ export class Signer extends ccc.SignerBtc {
       )
     ).signature;
   }
+
+  async signPsbt(_: string): Promise<string> {
+    throw new Error("Not implemented");
+  }
+
+  async pushPsbt(_: string): Promise<string> {
+    throw new Error("Not implemented");
+  }
 }