diff --git a/bun.lockb b/bun.lockb
index 4efdcff..9e97eb2 100755
Binary files a/bun.lockb and b/bun.lockb differ
diff --git a/package.json b/package.json
index 4b41963..83e53d3 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
     "typescript": "^5.3.2"
   },
   "dependencies": {
-    "@cashu/cashu-ts": "^1.2.1",
+    "@cashu/cashu-ts": "^2.0.0",
     "@nostr-dev-kit/ndk": "^2.10.7"
   }
 }
diff --git a/src/cashu.ts b/src/cashu.ts
index 6321261..a3080b8 100644
--- a/src/cashu.ts
+++ b/src/cashu.ts
@@ -1,6 +1,6 @@
-import {getDecodedToken} from "@cashu/cashu-ts";
-import type {Proof, TokenEntry} from "@cashu/cashu-ts";
-import {getMailSubscriptionDurationForSats} from "./general.ts";
+import { CashuMint, CashuWallet, getDecodedToken, getEncodedToken } from "@cashu/cashu-ts";
+import type { Token } from "@cashu/cashu-ts";
+import { getMailSubscriptionDurationForSats } from "./general.ts";
 
 class InvalidTokenException extends Error {
   constructor(message: string) {
@@ -20,23 +20,39 @@ export class TokenInfo {
   ] as const;
   private static readonly MIN_AMOUNT = 21 as const;
 
-  public readonly token: TokenEntry;
+  public readonly token: Token;
   public readonly amount: number;
-  public readonly mint: string;
-  public readonly proofs: Proof[];
+
+  get mint() {
+    return this.token.mint;
+  }
+
+  get proofs() {
+    return this.token.proofs;
+  }
 
   constructor(protected readonly tokenString: string) {
-    const decodedTokenData = getDecodedToken(tokenString);
-    if (decodedTokenData.unit !== 'sat' || decodedTokenData.token.length !== 1)
-      throw new InvalidTokenException('Invalid token format. We only accept a single token denominated in sats');
-    this.token = decodedTokenData.token[0];
-    this.amount = this.token.proofs.reduce((c, x) => c + x.amount, 0);
-    if (this.amount < TokenInfo.MIN_AMOUNT)
-      throw new InvalidTokenException(`Invalid amount. Minimum required: ${TokenInfo.MIN_AMOUNT} sats`);
-    if (!TokenInfo.ALLOWED_MINTS.includes(this.token.mint))
+    const token = getDecodedToken(tokenString);
+
+    const amount = token.proofs.reduce((c, x) => c + x.amount, 0);
+
+    if (!TokenInfo.ALLOWED_MINTS.includes(token.mint))
       throw new InvalidTokenException('Unsupported mint');
-    this.mint = this.token.mint;
-    this.proofs = this.token.proofs;
+    if (amount < TokenInfo.MIN_AMOUNT)
+      throw new InvalidTokenException(`Invalid amount. Minimum required: ${TokenInfo.MIN_AMOUNT} sats`);
+
+    this.token = token;
+    this.amount = amount;
+  }
+
+  async receive(): Promise<string> {
+    const mint = new CashuMint(this.mint);
+    const wallet = new CashuWallet(mint);
+    const newToken = await wallet.receive(this.tokenString);
+    return getEncodedToken({
+      mint: this.mint,
+      proofs: newToken
+    });
   }
 }
 
diff --git a/src/index.ts b/src/index.ts
index 08492a2..6549f29 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,4 +1,4 @@
-export * from "./cashu";
-export * from "./general";
+export * from "./cashu.ts";
+export * from "./general.ts";
 export * from "./nostr.ts";
 export * from "./email.ts";
\ No newline at end of file
diff --git a/src/nostr.ts b/src/nostr.ts
index 4b4cd80..af68454 100644
--- a/src/nostr.ts
+++ b/src/nostr.ts
@@ -1,6 +1,7 @@
 import NDK, {NDKEvent, NDKPrivateKeySigner, NDKUser} from "@nostr-dev-kit/ndk";
 import {generateSecretKey} from "nostr-tools";
 import {randomTimeUpTo2DaysInThePast} from "./general.ts";
+import {decode as nip19Decode, npubEncode} from "nostr-tools/nip19";
 
 export async function encryptEventForRecipient(
   ndk: NDK,
@@ -25,3 +26,14 @@ export async function encryptEventForRecipient(
   giftWrap.ndk = ndk;
   return giftWrap;
 }
+
+export function npubToPubKeyString(npub: string) {
+  const decoded = nip19Decode(npub);
+  if (decoded.type !== 'npub')
+    throw new Error('Invalid npub');
+  return decoded.data;
+}
+
+export function pubKeyStringToNpub(pubKey: string) {
+  return npubEncode(pubKey);
+}