Update daoURI.json

Registrations/ArbitrumDAO/daoURI.json

@@ -1,10 +1,21 @@
 {
-  "@context": "https://www.daostar.org/schemas",
+  "@context": "http://www.daostar.org/schemas",
   "type": "DAO",
   "name": "Arbitrum DAO",
   "description": "Arbitrum is a technology suite designed to scale Ethereum. The Arbitrum DAO is a new entity with decision-making authority over the Arbitrum One and Arbitrum Nova chains, along with their underlying protocols. This DAO is governed by The Constitution of the Arbitrum DAO, which is a set of rules that describe how the DAO will operate. The Constitution is enshrined within a number of social contracts that are used by the Arbitrum DAO to govern itself and its technologies.",
   "membersURI": "https://membersuri.daostar.org/members/arbitrumfoundation.eth",
   "proposalsURI": "https://proposalsuri.daostar.org/proposals/arbitrumfoundation.eth",
+  "contractsURI": "https://raw.githubusercontent.com/metagov/daostar/main/contractRegistryURI/arbitrumfoundation.json",
   "governanceURI": "https://docs.arbitrum.foundation/gentle-intro-dao-governance",
-  "contractsRegistryURI": "https://raw.githubusercontent.com/metagov/daostar/main/contractRegistryURI/arbitrumfoundation.json"
+  "constitutionURI": {
+    "link": "https://github.com/ArbitrumFoundation/docs/blob/main/docs/partials/_constitution-content-partial.md",
+    "hash": "0x7cc34e90dde73cfe0b4a041e79b5638e99f0d9547001e42b466c32a18ed6789d"
+  },
+  "calendarURI": "https://calendar.google.com/calendar/u/0/embed?src=c_4157985d2452dfd8a91b6a36bccab37deb9bffe9053a4b9bcc4e9fff9ef02924@group.calendar.google.com&ctz=Europe/Warsaw",
+  "dashboards": {
+    "riskDashboard": "https://risk.gauntlet.xyz/protocols/arbitrum",
+    "walletDashboard": "https://arbwallets.xyz",
+    "gasDashboard": "https://gas-hub.vercel.app/",
+    "crossChainMessageDashboard": "https://retryable-dashboard.arbitrum.io/tx"
+  }
 }