docs(tap): fix Horizon config with V1/V2 TAP verifier addresses

   Add missing receipts_verifier_address_v2
   required when horizon.enabled = true.
   Without this, indexer-service-rs fails at
   startup. Also clarifies V1 vs V2
   verifier distinction in contracts table and
   adds note about escrow subgraph.

Author: suchapalaver

website/src/pages/en/indexing/tap.mdx

@@ -48,11 +48,12 @@ RAV redemption is fully automated when running `indexer-tap-agent` and `indexer-
 
 ### Contracts
 
-| Contract          | Arbitrum Mainnet (42161)                     | Arbitrum Sepolia (421614)                    |
-| ----------------- | -------------------------------------------- | -------------------------------------------- |
-| TAP Verifier      | `0x8f69F5C07477Ac46FBc491B1E6D91E2be0111A9e` | `0x382863e7B662027117449bd2c49285582bbBd21B` |
-| Subgraph Service  | `0xb2Bb92d0DE618878E438b55D5846cfecD9301105` | `0xc24A3dAC5d06d771f657A48B20cE1a671B78f26b` |
-| TAP Escrow        | `0x8f477709eF277d4A880801D01A140a9CF88bA0d3` | `0x1e4dC4f9F95E102635D8F7ED71c5CdbFa20e2d02` |
+| Contract              | Arbitrum Mainnet (42161)                     | Arbitrum Sepolia (421614)                    |
+| --------------------- | -------------------------------------------- | -------------------------------------------- |
+| TAP Verifier (V1)     | `0x33f9E93266ce0E108fc85DdE2f71dab555A0F05a` | `0xfC24cE7a4428A6B89B52645243662A02BA734ECF` |
+| TAP Verifier (V2)     | `0x8f69F5C07477Ac46FBc491B1E6D91E2be0111A9e` | `0x382863e7B662027117449bd2c49285582bbBd21B` |
+| Subgraph Service      | `0xb2Bb92d0DE618878E438b55D5846cfecD9301105` | `0xc24A3dAC5d06d771f657A48B20cE1a671B78f26b` |
+| TAP Escrow            | `0x8f477709eF277d4A880801D01A140a9CF88bA0d3` | `0x1e4dC4f9F95E102635D8F7ED71c5CdbFa20e2d02` |
 
 ### Gateway
 
@@ -112,19 +113,26 @@ query_url = "http://graph-node:8000"
 status_url = "http://graph-node:8000/graphql"
 
 [subgraphs.network]
-# The Graph Network Subgraph (includes escrow data)
+# The Graph Network Subgraph (includes escrow data with Graph Horizon)
 # Use query_url for hosted service, or deployment_id for local indexing (recommended)
 query_url = "https://api.thegraph.com/subgraphs/name/graphprotocol/graph-network-arbitrum"
 # deployment_id = "QmUVskWrz1ZiQZ76AtyhcfFDEH1ELnRpoyEhVL8p6NFTbR"
 
+# Note: With Graph Horizon, escrow data is included in the Network Subgraph.
+# The separate [subgraphs.escrow] config is only needed for legacy V1 receipt processing.
+
 [blockchain]
 chain_id = 42161
-receipts_verifier_address = "0x8f69F5C07477Ac46FBc491B1E6D91E2be0111A9e"
+# V1 TAP Verifier (for legacy receipts during migration)
+receipts_verifier_address = "0x33f9E93266ce0E108fc85DdE2f71dab555A0F05a"
+# V2 Horizon TAP Verifier
+receipts_verifier_address_v2 = "0x8f69F5C07477Ac46FBc491B1E6D91E2be0111A9e"
 subgraph_service_address = "0xb2Bb92d0DE618878E438b55D5846cfecD9301105"
 
 # For testnet:
 # chain_id = 421614
-# receipts_verifier_address = "0x382863e7B662027117449bd2c49285582bbBd21B"
+# receipts_verifier_address = "0xfC24cE7a4428A6B89B52645243662A02BA734ECF"
+# receipts_verifier_address_v2 = "0x382863e7B662027117449bd2c49285582bbBd21B"
 # subgraph_service_address = "0xc24A3dAC5d06d771f657A48B20cE1a671B78f26b"
 
 [tap]