diff --git a/package-lock.json b/package-lock.json
index 40f8459fb..6439f7d7f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -23,7 +23,7 @@
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         "bignumber.js": "^9.1.2",
         "bip39": "^3.1.0",
-        "bitcoinjs-lib": "^5.2.0",
+        "bitcoinjs-lib": "6.1.5",
         "buffer": "^6.0.3",
         "bytebuffer": "^5.0.1",
         "coininfo": "^5.2.1",
@@ -33,6 +33,7 @@
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         "detect-browser": "^5.3.0",
         "dompurify": "^3.0.5",
+        "ecpair": "^2.1.0",
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         "emoji-mart": "^5.5.2",
         "file-saver": "^2.0.5",
@@ -62,6 +63,7 @@
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         "stylefire": "^7.0.3",
         "throttle-promise": "^1.0.4",
+        "tiny-secp256k1": "^2.2.3",
         "tweetnacl": "^1.0.3",
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@@ -109,6 +111,8 @@
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         "vite-plugin-electron": "^0.14.1",
         "vite-plugin-pwa": "^0.16.5",
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+        "vite-plugin-wasm": "^3.2.2",
         "vitest": "^0.34.5",
         "vue-cli-plugin-i18n": "^2.3.2",
         "vue-cli-plugin-vuetify": "~2.5.8",
@@ -3808,6 +3812,23 @@
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+      "resolved": "https://registry.npmjs.org/@rollup/plugin-virtual/-/plugin-virtual-3.0.2.tgz",
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@@ -3929,6 +3950,216 @@
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+        "x64"
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+      "optional": true,
+      "os": [
+        "win32"
+      ],
+      "engines": {
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+    "node_modules/@swc/counter": {
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/@swc/counter/-/counter-0.1.2.tgz",
+      "integrity": "sha512-9F4ys4C74eSTEUNndnER3VJ15oru2NumfQxS8geE+f3eB5xvfxpWyqE5XlVnxb/R14uoXi6SLbBwwiDSkv+XEw==",
+      "dev": true
+    },
+    "node_modules/@swc/types": {
+      "version": "0.1.5",
+      "resolved": "https://registry.npmjs.org/@swc/types/-/types-0.1.5.tgz",
+      "integrity": "sha512-myfUej5naTBWnqOCc/MdVOLVjXUXtIA+NpDrDBKJtLLg2shUjBu3cZmB/85RyitKc55+lUUyl7oRfLOvkr2hsw==",
+      "dev": true
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@@ -5560,9 +5791,9 @@
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@@ -5599,44 +5830,14 @@
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@@ -5645,44 +5846,44 @@
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-        "randombytes": "^2.0.1",
-        "tiny-secp256k1": "^1.1.1",
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+      "resolved": "https://registry.npmjs.org/bitcoinjs-lib/-/bitcoinjs-lib-6.1.5.tgz",
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-        "wif": "^2.0.1"
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@@ -7591,6 +7792,19 @@
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@@ -8853,11 +9067,6 @@
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@@ -10908,11 +11117,6 @@
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-      "version": "2.0.10",
-      "resolved": "https://registry.npmjs.org/merkle-lib/-/merkle-lib-2.0.10.tgz",
-      "integrity": "sha512-XrNQvUbn1DL5hKNe46Ccs+Tu3/PYOlrcZILuGUhb95oKBPjc/nmIC8D462PQkipVDGKRvwhn+QFg2cCdIvmDJA=="
-    },
     "node_modules/micromatch": {
       "version": "4.0.5",
       "resolved": "https://registry.npmjs.org/micromatch/-/micromatch-4.0.5.tgz",
@@ -11195,11 +11399,6 @@
       "integrity": "sha512-nnbWWOkoWyUsTjKrhgD0dcz22mdkSnpYqbEjIm2nhwhuxlSkpywJmBo8h0ZqJdkp73mb90SssHkN4rsRaBAfAA==",
       "dev": true
     },
-    "node_modules/nan": {
-      "version": "2.17.0",
-      "resolved": "https://registry.npmjs.org/nan/-/nan-2.17.0.tgz",
-      "integrity": "sha512-2ZTgtl0nJsO0KQCjEpxcIr5D+Yv90plTitZt9JBfQvVJDS5seMl3FOvsh3+9CoYWXf/1l5OaZzzF6nDm4cagaQ=="
-    },
     "node_modules/nanoid": {
       "version": "3.3.6",
       "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.6.tgz",
@@ -12092,14 +12291,6 @@
         "node": ">=6"
       }
     },
-    "node_modules/pushdata-bitcoin": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/pushdata-bitcoin/-/pushdata-bitcoin-1.0.1.tgz",
-      "integrity": "sha512-hw7rcYTJRAl4olM8Owe8x0fBuJJ+WGbMhQuLWOXEMN3PxPCKQHRkhfL+XG0+iXUmSHjkMmb3Ba55Mt21cZc9kQ==",
-      "dependencies": {
-        "bitcoin-ops": "^1.3.0"
-      }
-    },
     "node_modules/qrcode": {
       "version": "1.5.3",
       "resolved": "https://registry.npmjs.org/qrcode/-/qrcode-1.5.3.tgz",
@@ -13961,26 +14152,16 @@
       }
     },
     "node_modules/tiny-secp256k1": {
-      "version": "1.1.6",
-      "resolved": "https://registry.npmjs.org/tiny-secp256k1/-/tiny-secp256k1-1.1.6.tgz",
-      "integrity": "sha512-FmqJZGduTyvsr2cF3375fqGHUovSwDi/QytexX1Se4BPuPZpTE5Ftp5fg+EFSuEf3lhZqgCRjEG3ydUQ/aNiwA==",
-      "hasInstallScript": true,
+      "version": "2.2.3",
+      "resolved": "https://registry.npmjs.org/tiny-secp256k1/-/tiny-secp256k1-2.2.3.tgz",
+      "integrity": "sha512-SGcL07SxcPN2nGKHTCvRMkQLYPSoeFcvArUSCYtjVARiFAWU44cCIqYS0mYAU6nY7XfvwURuTIGo2Omt3ZQr0Q==",
       "dependencies": {
-        "bindings": "^1.3.0",
-        "bn.js": "^4.11.8",
-        "create-hmac": "^1.1.7",
-        "elliptic": "^6.4.0",
-        "nan": "^2.13.2"
+        "uint8array-tools": "0.0.7"
       },
       "engines": {
-        "node": ">=6.0.0"
+        "node": ">=14.0.0"
       }
     },
-    "node_modules/tiny-secp256k1/node_modules/bn.js": {
-      "version": "4.12.0",
-      "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.12.0.tgz",
-      "integrity": "sha512-c98Bf3tPniI+scsdk237ku1Dc3ujXQTSgyiPUDEOe7tRkhrqridvh8klBv0HCEso1OLOYcHuCv/cS6DNxKH+ZA=="
-    },
     "node_modules/tinybench": {
       "version": "2.5.0",
       "resolved": "https://registry.npmjs.org/tinybench/-/tinybench-2.5.0.tgz",
@@ -14286,6 +14467,14 @@
         "node": ">=8"
       }
     },
+    "node_modules/uint8array-tools": {
+      "version": "0.0.7",
+      "resolved": "https://registry.npmjs.org/uint8array-tools/-/uint8array-tools-0.0.7.tgz",
+      "integrity": "sha512-vrrNZJiusLWoFWBqz5Y5KMCgP9W9hnjZHzZiZRT8oNAkq3d5Z5Oe76jAvVVSRh4U8GGR90N2X1dWtrhvx6L8UQ==",
+      "engines": {
+        "node": ">=14.0.0"
+      }
+    },
     "node_modules/unbox-primitive": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/unbox-primitive/-/unbox-primitive-1.0.2.tgz",
@@ -14678,6 +14867,29 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/vite-plugin-top-level-await": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/vite-plugin-top-level-await/-/vite-plugin-top-level-await-1.3.1.tgz",
+      "integrity": "sha512-55M1h4NAwkrpxPNOJIBzKZFihqLUzIgnElLSmPNPMR2Fn9+JHKaNg3sVX1Fq+VgvuBksQYxiD3OnwQAUu7kaPQ==",
+      "dev": true,
+      "dependencies": {
+        "@rollup/plugin-virtual": "^3.0.1",
+        "@swc/core": "^1.3.10",
+        "uuid": "^9.0.0"
+      },
+      "peerDependencies": {
+        "vite": ">=2.8"
+      }
+    },
+    "node_modules/vite-plugin-wasm": {
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/vite-plugin-wasm/-/vite-plugin-wasm-3.2.2.tgz",
+      "integrity": "sha512-cdbBUNR850AEoMd5nvLmnyeq63CSfoP1ctD/L2vLk/5+wsgAPlAVAzUK5nGKWO/jtehNlrSSHLteN+gFQw7VOA==",
+      "dev": true,
+      "peerDependencies": {
+        "vite": "^2 || ^3 || ^4"
+      }
+    },
     "node_modules/vitest": {
       "version": "0.34.5",
       "resolved": "https://registry.npmjs.org/vitest/-/vitest-0.34.5.tgz",
diff --git a/package.json b/package.json
index 259e6b845..3f611047f 100644
--- a/package.json
+++ b/package.json
@@ -36,7 +36,7 @@
     "b64-to-blob": "^1.2.19",
     "bignumber.js": "^9.1.2",
     "bip39": "^3.1.0",
-    "bitcoinjs-lib": "^5.2.0",
+    "bitcoinjs-lib": "6.1.5",
     "buffer": "^6.0.3",
     "bytebuffer": "^5.0.1",
     "coininfo": "^5.2.1",
@@ -46,6 +46,7 @@
     "deepmerge": "^4.3.1",
     "detect-browser": "^5.3.0",
     "dompurify": "^3.0.5",
+    "ecpair": "^2.1.0",
     "ed2curve": "^0.3.0",
     "emoji-mart": "^5.5.2",
     "file-saver": "^2.0.5",
@@ -75,6 +76,7 @@
     "stream-http": "^3.2.0",
     "stylefire": "^7.0.3",
     "throttle-promise": "^1.0.4",
+    "tiny-secp256k1": "^2.2.3",
     "tweetnacl": "^1.0.3",
     "visibilityjs": "^2.0.2",
     "vue": "^3.3.4",
@@ -122,6 +124,8 @@
     "vite": "^4.4.9",
     "vite-plugin-electron": "^0.14.1",
     "vite-plugin-pwa": "^0.16.5",
+    "vite-plugin-top-level-await": "^1.3.1",
+    "vite-plugin-wasm": "^3.2.2",
     "vitest": "^0.34.5",
     "vue-cli-plugin-i18n": "^2.3.2",
     "vue-cli-plugin-vuetify": "~2.5.8",
diff --git a/src/lib/bitcoin/btc-base-api.js b/src/lib/bitcoin/btc-base-api.js
index 34af8898b..44a4f01cf 100644
--- a/src/lib/bitcoin/btc-base-api.js
+++ b/src/lib/bitcoin/btc-base-api.js
@@ -7,17 +7,22 @@ import BigNumber from '../bignumber'
 import { isPositiveNumber } from '@/lib/numericHelpers'
 import { CryptosInfo } from '../constants'
 
-const getUnique = values => {
+import { ECPairFactory } from 'ecpair'
+import * as tinysecp from 'tiny-secp256k1'
+
+const ECPairAPI = ECPairFactory(tinysecp)
+
+const getUnique = (values) => {
   const map = values.reduce((m, v) => {
     m[v] = 1
     return m
-  }, { })
+  }, {})
   return Object.keys(map)
 }
 
-const createClient = url => {
+const createClient = (url) => {
   const client = axios.create({ baseURL: url })
-  client.interceptors.response.use(null, error => {
+  client.interceptors.response.use(null, (error) => {
     if (error.response && Number(error.response.status) >= 500) {
       console.error('Request failed', error)
     }
@@ -26,10 +31,10 @@ const createClient = url => {
   return client
 }
 
-export function getAccount (crypto, passphrase) {
+export function getAccount(crypto, passphrase) {
   const network = networks[crypto]
   const pwHash = bitcoin.crypto.sha256(Buffer.from(passphrase))
-  const keyPair = bitcoin.ECPair.fromPrivateKey(pwHash, { network })
+  const keyPair = ECPairAPI.fromPrivateKey(pwHash, { network })
 
   return {
     network,
@@ -39,21 +44,21 @@ export function getAccount (crypto, passphrase) {
 }
 
 export default class BtcBaseApi {
-  constructor (crypto, passphrase) {
+  constructor(crypto, passphrase) {
     const account = getAccount(crypto, passphrase)
 
     this._network = account.network
     this._keyPair = account.keyPair
     this._address = account.address
-    this._clients = { }
+    this._clients = {}
     this._crypto = crypto
   }
 
-  get multiplier () {
+  get multiplier() {
     return 1e8
   }
 
-  get address () {
+  get address() {
     return this._address
   }
 
@@ -67,7 +72,7 @@ export default class BtcBaseApi {
    * @abstract
    * @returns {Promise<number>}
    */
-  getBalance () {
+  getBalance() {
     return Promise.resolve(0)
   }
 
@@ -78,16 +83,22 @@ export default class BtcBaseApi {
    * @param {number} fee transaction fee (coins, not satoshis)
    * @returns {Promise<{hex: string, txid: string}>}
    */
-  createTransaction (address = '', amount = 0, fee) {
-    return this.getUnspents().then(unspents => {
-      const hex = this._buildTransaction(address, amount, unspents, fee)
+  async createTransaction(address = '', amount = 0, fee) {
+    const unspents = await this.getUnspents()
 
-      let txid = bitcoin.crypto.sha256(Buffer.from(hex, 'hex'))
-      txid = bitcoin.crypto.sha256(Buffer.from(txid))
-      txid = txid.toString('hex').match(/.{2}/g).reverse().join('')
+    // populate unspents with full transaction in HEX
+    for (const unspent of unspents) {
+      const txHex = await this._get(`/tx/${unspent.txid}/hex`)
+      unspent.txHex = txHex
+    }
 
-      return { hex, txid }
-    })
+    const hex = this._buildTransaction(address, amount, unspents, fee)
+
+    let txid = bitcoin.crypto.sha256(Buffer.from(hex, 'hex'))
+    txid = bitcoin.crypto.sha256(Buffer.from(txid))
+    txid = txid.toString('hex').match(/.{2}/g).reverse().join('')
+
+    return { hex, txid }
   }
 
   /**
@@ -95,7 +106,7 @@ export default class BtcBaseApi {
    * @abstract
    * @param {string} txHex raw transaction as a HEX literal
    */
-  sendTransaction (txHex) {
+  sendTransaction(txHex) {
     return Promise.resolve('')
   }
 
@@ -105,7 +116,7 @@ export default class BtcBaseApi {
    * @param {*} txid transaction ID
    * @returns {Promise<object>}
    */
-  getTransaction (txid) {
+  getTransaction(txid) {
     return Promise.resolve(null)
   }
 
@@ -115,7 +126,7 @@ export default class BtcBaseApi {
    * @param {any} options crypto-specific options
    * @returns {Promise<{hasMore: boolean, items: Array}>}
    */
-  getTransactions (options) {
+  getTransactions(options) {
     return Promise.resolve({ hasMore: false, items: [] })
   }
 
@@ -124,7 +135,7 @@ export default class BtcBaseApi {
    * @abstract
    * @returns {Promise<Array<{txid: string, vout: number, amount: number}>>}
    */
-  getUnspents () {
+  getUnspents() {
     return Promise.resolve([])
   }
 
@@ -136,43 +147,58 @@ export default class BtcBaseApi {
    * @param {number} fee transaction fee in primary units (BTC, DOGE, DASH, etc)
    * @returns {string}
    */
-  _buildTransaction (address, amount, unspents, fee) {
+  _buildTransaction(address, amount, unspents, fee) {
     amount = new BigNumber(amount).times(this.multiplier).toNumber()
     amount = Math.floor(amount)
 
-    const txb = new bitcoin.TransactionBuilder(this._network)
+    const txb = new bitcoin.Psbt({
+      network: this._network
+    })
     txb.setVersion(1)
 
     const target = amount + new BigNumber(fee).times(this.multiplier).toNumber()
     let transferAmount = 0
     let inputs = 0
 
-    unspents.forEach(tx => {
+    unspents.forEach((tx) => {
       const amt = Math.floor(tx.amount)
       if (transferAmount < target) {
-        txb.addInput(tx.txid, tx.vout)
+        txb.addInput({
+          hash: tx.txid,
+          index: tx.vout,
+          nonWitnessUtxo: Buffer.from(tx.txHex, 'hex')
+        })
         transferAmount += amt
         inputs++
       }
     })
 
-    txb.addOutput(bitcoin.address.toOutputScript(address, this._network), amount)
+    txb.addOutput({
+      address,
+      value: amount
+    })
     // This is a necessary step
     // If we'll not add a change to output, it will burn in hell
     const change = transferAmount - target
     if (isPositiveNumber(change)) {
-      txb.addOutput(this._address, change)
+      txb.addOutput({
+        address: this._address,
+        value: change
+      })
     }
 
     for (let i = 0; i < inputs; ++i) {
-      txb.sign(i, this._keyPair)
+      txb.signInput(i, this._keyPair)
     }
 
-    return txb.build().toHex()
+    txb.finalizeAllInputs()
+    const tx = txb.extractTransaction()
+
+    return tx.toHex()
   }
 
   /** Picks a client for a random API endpoint */
-  _getClient () {
+  _getClient() {
     const url = getEnpointUrl(this._crypto)
     if (!this._clients[url]) {
       this._clients[url] = createClient(url)
@@ -180,19 +206,23 @@ export default class BtcBaseApi {
     return this._clients[url]
   }
 
-  _mapTransaction (tx) {
+  _mapTransaction(tx) {
     // Remove курьи txs like "possibleDoubleSpend" and txs without info
     if (tx.possibleDoubleSpend || (!tx.txid && !tx.time && !tx.valueIn && !tx.vin)) return
 
     const addressField = tx.vin[0].address ? 'address' : 'addr'
-    const senders = getUnique(tx.vin.map(input => input[addressField])).filter(sender => sender !== undefined && sender !== 'undefined')
+    const senders = getUnique(tx.vin.map((input) => input[addressField])).filter(
+      (sender) => sender !== undefined && sender !== 'undefined'
+    )
 
     const direction = senders.includes(this._address) ? 'from' : 'to'
 
-    const recipients = getUnique(tx.vout.reduce((list, out) => {
-      list.push(...out.scriptPubKey.addresses)
-      return list
-    }, [])).filter(recipient => recipient !== undefined && recipient !== 'undefined')
+    const recipients = getUnique(
+      tx.vout.reduce((list, out) => {
+        list.push(...out.scriptPubKey.addresses)
+        return list
+      }, [])
+    ).filter((recipient) => recipient !== undefined && recipient !== 'undefined')
 
     if (direction === 'from') {
       // Disregard our address for an outgoing transaction unless it's the only address (i.e. we're sending to ourselves)
@@ -218,8 +248,13 @@ export default class BtcBaseApi {
     // Calculate amount from outputs:
     // * for the outgoing transactions take outputs that DO NOT target us
     // * for the incoming transactions take outputs that DO target us
-    const amount = tx.vout.reduce((sum, t) =>
-      ((direction === 'to') === (t.scriptPubKey.addresses.includes(this._address)) ? sum + Number(t.value) : sum), 0)
+    const amount = tx.vout.reduce(
+      (sum, t) =>
+        (direction === 'to') === t.scriptPubKey.addresses.includes(this._address)
+          ? sum + Number(t.value)
+          : sum,
+      0
+    )
 
     const confirmations = tx.confirmations
     const timestamp = tx.time ? tx.time * 1000 : undefined
diff --git a/vite-base.config.ts b/vite-base.config.ts
index 8b023fe28..25b1304da 100644
--- a/vite-base.config.ts
+++ b/vite-base.config.ts
@@ -1,5 +1,7 @@
 import { defineConfig } from 'vite'
 import vue from '@vitejs/plugin-vue'
+import wasm from 'vite-plugin-wasm'
+import topLevelAwait from 'vite-plugin-top-level-await'
 import path from 'path'
 import autoprefixer from 'autoprefixer'
 import inject from '@rollup/plugin-inject'
@@ -11,6 +13,8 @@ import { excludeBip39Wordlists } from './vite-config/rollup/excludeBip39Wordlist
 
 export default defineConfig({
   plugins: [
+    wasm(),
+    topLevelAwait(),
     vue(),
     commonjs(),
     inject({