Update accepted_grant_applications.md

Author: Noc2

docs/accepted_grant_applications.md

@@ -474,3 +474,4 @@
 | [ChainSafe Systems](https://chainsafe.io/) | Privacy enhancement for Polkadot-js extension | [GitHub](https://github.com/ChainSafe) | <ul><li>[ ] </li></ul> |  <ul><li>[ ] </li></ul> |  <ul><li>[ ] </li></ul> |
 | [BQP](https://qbitcoin.tech/) | Quantum Lock for QBITCOIN | [GitHub](https://github.com/bqpquantum/) | <ul><li>[ ] </li></ul> |  <ul><li>[ ] </li></ul> |  <ul><li>[ ] </li></ul> |
 | [Simply VC](https://simply-vc.com.mt/) | PANIC Monitoring and Alerting For Blockchains | [GitHub](https://github.com/SimplyVC/panic) | <ul><li>[ ] </li></ul> |  <ul><li>[ ] </li></ul> |  <ul><li>[ ] </li></ul> |
+| [Artree LLC](https://artree.co.jp/) | Zero Network | [GitHub](https://github.com/zero-network) | <ul><li>[ ] </li></ul> |  <ul><li>[ ] </li></ul> |  <ul><li>[ ] </li></ul> |