Initial rebrand: @polkadot -> @pezkuwi (14 packages)

- Package namespace: @polkadot/* -> @pezkuwi/*
- Repository: polkadot-js/common -> pezkuwichain/pezkuwi-common
- Author: Pezkuwi Team <team@pezkuwichain.io>

Core packages:
- @pezkuwi/util (utilities)
- @pezkuwi/util-crypto (crypto primitives)
- @pezkuwi/keyring (account management)
- @pezkuwi/networks (chain metadata)
- @pezkuwi/hw-ledger (Ledger hardware wallet)
- @pezkuwi/x-* (10 polyfill packages)

Total: 14 packages
Upstream: polkadot-js/common v14.0.1

packages/util-crypto/src/address/encodeDerived.ts

@@ -0,0 +1,19 @@
+// Copyright 2017-2025 @polkadot/util-crypto authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import type { BN } from '@pezkuwi/util';
+import type { Prefix } from './types.js';
+
+import { decodeAddress } from './decode.js';
+import { encodeAddress } from './encode.js';
+import { createKeyDerived } from './keyDerived.js';
+
+/**
+ * @name encodeDerivedAddress
+ * @summary Creates a derived address as used in Substrate utility.
+ * @description
+ * Creates a Substrate derived address based on the input address/publicKey and the index supplied.
+ */
+export function encodeDerivedAddress (who: string | Uint8Array, index: bigint | BN | number, ss58Format?: Prefix): string {
+  return encodeAddress(createKeyDerived(decodeAddress(who), index), ss58Format);
+}