fix(tron): use hex chain id in CAIP-2 network identifiers

.claude/agents/code-reviewer.md

@@ -12,7 +12,7 @@ General code review for x402 changes. Treat like a normal `code-reviewer`, but b
 1. **Wire format**: any touch to `PaymentRequired`, `PaymentPayload`, or `PaymentResponse` serialization must match [specs/protocol.md](../../specs/protocol.md) and not break [specs/001-exact-v2-compat/spec.md](../../specs/001-exact-v2-compat/spec.md).
 2. **Scheme payload**: check that `payload.authorization` is used (not legacy `extensions.transferAuthorization`) for `exact`.
 3. **Pipeline step ordering**: client payment selection is 5 steps in [specs/roles.md](../../specs/roles.md). Policies go at step 5.
-4. **Mechanism registration**: exact-match network keys (`tron:nile`) win over wildcards (`tron:*`). Flag changes to registration logic.
+4. **Mechanism registration**: exact-match network keys (`tron:0xcd8690dc`) win over wildcards (`tron:*`). Flag changes to registration logic.
 5. **Lowercase addresses**: all address/selector/topic strings lowercase. Flag any uppercase leak.
 6. **Header encoding**: `Base64(UTF-8(JSON.stringify(...)))`, never raw JSON in the header value.
 

.claude/rules/CLAUDE.md

@@ -35,7 +35,7 @@ When multiple rule files apply, read all of them before editing. Rules are layer
 │   └── exact-gasfree.md    # TRON GasFree custodial + TIP-712 relayer
 ├── networks/
 │   ├── evm.md              # eip155:<chainId>, contracts, signing
-│   └── tron.md             # tron:<name>, TIP-712 hex-address rule, GasFree link
+│   └── tron.md             # tron:<hexChainId>, TIP-712 hex-address rule, GasFree link
 ├── typescript/
 │   └── conventions.md      # pnpm/turbo, ESM, viem/tronweb, fork+overlay, signer factories
 └── testing/

.claude/rules/common/conventions.md

@@ -6,7 +6,7 @@ Repository-wide conventions that apply to every component, every scheme. Break t
 
 - **Lowercase everything**: addresses, selectors, event topics.
 - **TRON + EIP/TIP-712**: convert TRON Base58 addresses (`T...`) to **0x-prefixed EVM hex** before passing to any EIP-712 / TIP-712 signer. This applies to `verifyingContract`, `token`, `serviceProvider`, `user`, `receiver`, and any other `address`-typed field, **both in the domain and in the message**. Use `tronAddressToEvm` / `normalizeAddressForSigning` from `mechanisms/tron/src/utils.ts` — do not reimplement. See [docs/solutions.md entry #1](../../../docs/solutions.md).
-- **Network identifiers**: CAIP-2 `eip155:<chainId>` for EVM, `tron:<name>` for TRON. Detection rule: `tron:` prefix → TRON, `eip155:` prefix → EVM.
+- **Network identifiers**: CAIP-2 `eip155:<chainId>` for EVM, `tron:<hexChainId>` for TRON (e.g. `tron:0xcd8690dc` for Nile). Detection rule: `tron:` prefix → TRON, `eip155:` prefix → EVM. Prefer the exported constants `TRON_MAINNET` / `TRON_NILE` / `TRON_SHASTA` from `@bankofai/x402-tron` over copying the hex strings.
 
 ## Amounts & fees
 
@@ -36,7 +36,7 @@ Repository-wide conventions that apply to every component, every scheme. Break t
 
 ## Mechanism registration
 
-- **Exact match** (e.g. `"tron:nile"`) outranks **wildcard** (e.g. `"tron:*"`). Register more specific first, or accept that exact-match mechanisms win the lookup regardless of insertion order.
+- **Exact match** (e.g. `"tron:0xcd8690dc"`) outranks **wildcard** (e.g. `"tron:*"`). Register more specific first, or accept that exact-match mechanisms win the lookup regardless of insertion order.
 - Each scheme class is registered per `(network, scheme)` with `new + register` (no thin wrapper). Do not conflate schemes across mechanisms; register each scheme-network pair explicitly. See [typescript/CLAUDE.md](../../../typescript/CLAUDE.md) "Scheme API surface".
 
 ## Policy pipeline

.claude/rules/networks/tron.md

@@ -2,13 +2,13 @@
 
 Mechanisms: `typescript/packages/mechanisms/tron` (`@bankofai/x402-tron`). **In-house, no upstream** — edit directly.
 
-Identifier: `tron:<name>` where `<name>` ∈ {`mainnet`, `shasta`, `nile`}.
+Identifier: `tron:<hexChainId>` per CAIP-2 (hex chain id as the reference, not a human-readable name). Canonical constants: `TRON_MAINNET`, `TRON_NILE`, `TRON_SHASTA` exported from `@bankofai/x402-tron`.
 
-| Identifier | Chain ID (decimal) | Chain ID (hex) |
-|---|---|---|
-| `tron:mainnet` | 728126428 | 0x2b6653dc |
-| `tron:shasta` | 2494104990 | 0x94a9059e |
-| `tron:nile` | 3448148188 | 0xcd8690dc |
+| Constant | Identifier | Chain ID (decimal) | Chain ID (hex) |
+|---|---|---|---|
+| `TRON_MAINNET` | `tron:0x2b6653dc` | 728126428 | 0x2b6653dc |
+| `TRON_SHASTA` | `tron:0x94a9059e` | 2494104990 | 0x94a9059e |
+| `TRON_NILE` | `tron:0xcd8690dc` | 3448148188 | 0xcd8690dc |
 
 Chain id helper: `getTronChainId(network)` in `mechanisms/tron/src/utils.ts`.
 
@@ -17,7 +17,7 @@ Chain id helper: `getTronChainId(network)` in `mechanisms/tron/src/utils.ts`.
 - TIP-712 is TRON's EIP-712 analogue. Structurally identical; same struct-hash / domain-separator algorithm. Uses the in-tree TIP-712 signer — do not add a new lib.
 - **Every `address` field** — domain and message — must be **0x-prefixed EVM hex**. Passing Base58 produces a valid-looking but wrong signature.
 - Convert Base58 → hex via `tronAddressToEvm` / `normalizeAddressForSigning` (`mechanisms/tron/src/utils.ts`). Do not reimplement.
-- Signer factories: `createClientTronSigner` / `createFacilitatorTronSigner` / `createAuthorizerTronSigner` from `@bankofai/x402-tron`. Pass `{ network, apiKey? }`; the factory builds TronWeb internally.
+- Signer factories: `createClientTronSigner` / `createFacilitatorTronSigner` / `createAuthorizerTronSigner` from `@bankofai/x402-tron`. `createClientTronSigner` / `createFacilitatorTronSigner` take `{ network, apiKey? }` and build TronWeb internally; `createAuthorizerTronSigner` takes only a wallet (no network — it signs offline).
 
 ## Gas & fees
 

CLAUDE.md

@@ -38,8 +38,8 @@ Each component has its own `CLAUDE.md` (where present) with build/test commands
 - **Addresses, selectors, event topics**: lowercase-normalized everywhere. TRON addresses are converted to **0x-prefixed EVM hex** before any EIP-712/TIP-712 signing — see [docs/solutions.md entry #1](docs/solutions.md).
 - **Payment ID**: 16 random bytes, encoded as `0x` + 32 hex chars, signed as `bytes16`.
 - **HTTP header encoding**: `Base64(UTF-8(JSON.stringify(object)))` for `PAYMENT-REQUIRED`, `PAYMENT-SIGNATURE`, `PAYMENT-RESPONSE`.
-- **Network identifiers**: CAIP-2 `eip155:<chainId>` for EVM; `tron:<name>` for TRON.
-- **Mechanism registration**: `tron:nile` (exact match, higher priority) beats `tron:*` (wildcard, lower priority).
+- **Network identifiers**: CAIP-2 `eip155:<chainId>` for EVM; `tron:<hexChainId>` for TRON (e.g. `tron:0xcd8690dc` for Nile).
+- **Mechanism registration**: `tron:0xcd8690dc` (exact match, higher priority) beats `tron:*` (wildcard, lower priority).
 - **Commit messages**: `<type>(<scope>): <description>` — e.g. `fix(tron): preserve raw_data_hex in tron approvals`.
 
 ## AI-native development

README.md

@@ -58,7 +58,7 @@ const wallet = /* resolve your @bankofai/agent-wallet */;
 // Permit2 approve that USDT/USDD need. When TRON_GRID_API_KEY is unset, mainnet
 // RPC falls back to a BankofAI-operated endpoint.
 const signer = await createClientTronSigner(wallet, {
-  network: "tron:nile",
+  network: "tron:0xcd8690dc",
   apiKey: process.env.TRON_GRID_API_KEY,
 });
 
@@ -148,9 +148,9 @@ x402 currently supports TRC-20 tokens on the TRON network and BEP-20 tokens on t
 
 | Network | ID | Status | Recommended For |
 |---------|----|--------|-----------------|
-| **TRON Nile** | `tron:nile` | Testnet | **Development & Testing** |
-| **TRON Shasta** | `tron:shasta` | Testnet | Alternative Testing |
-| **TRON Mainnet** | `tron:mainnet` | Mainnet | Production |
+| **TRON Nile** | `tron:0xcd8690dc` | Testnet | **Development & Testing** |
+| **TRON Shasta** | `tron:0x94a9059e` | Testnet | Alternative Testing |
+| **TRON Mainnet** | `tron:0x2b6653dc` | Mainnet | Production |
 | **BSC Testnet** | `eip155:97` | Testnet | **Development & Testing** |
 | **BSC Mainnet** | `eip155:56` | Mainnet | Production |
 

examples/typescript/.env-batch.example

@@ -20,11 +20,11 @@ TRON_GRID_API_KEY=
 
 # ── CLIENT · the payer (clients/batch-settlement) ─────────────────────────
 # Which chains to exercise, one burst (+refund) per entry, in order. Each entry is
-#   <network>[@<token>]  network: "eip155:97"/"tron:nile" (or "eip155"/"tron");
+#   <network>[@<token>]  network: "eip155:97"/"tron:0xcd8690dc" (or "eip155"/"tron");
 #   token optional (each chain advertises one: EVM=USDC, TRON=USDT) — symbol or
 #   asset address. Use `@` (not `#`) — dotenv treats `#` as a comment.
 # Unset ⇒ each configured chain once.
-PAY_TARGETS=eip155:97,tron:nile
+PAY_TARGETS=eip155:97,tron:0xcd8690dc
 
 # The resource the client fetches (server route).
 RESOURCE_URL=http://localhost:4041/weather
@@ -45,7 +45,7 @@ REFUND_AFTER_REQUESTS=false # refund the remaining channel balance after the bur
 # ── SERVER · the resource provider (servers/batch-settlement) ─────────────
 # Payout addresses (set the chain(s) you want to accept).
 EVM_ADDRESS=0x...   # BSC, eip155:97 (token USDC, permit2)
-TRON_ADDRESS=T...   # TRON, tron:nile (token USDT, permit2)
+TRON_ADDRESS=T...   # TRON, tron:0xcd8690dc (token USDT, permit2)
 
 # Where the server binds, and where it reaches the facilitator.
 SERVER_PORT=4041

examples/typescript/.env-exact.example

@@ -24,12 +24,12 @@ TRON_GRID_API_KEY=
 
 # ── CLIENT · the payer (clients/fetch · clients/mcp) ──────────────────────
 # Which chains/tokens to pay, one payment per entry, in order.
-#   <network>[@<token>]  network: "eip155:97"/"tron:nile" (or "eip155"/"tron");
+#   <network>[@<token>]  network: "eip155:97"/"tron:0xcd8690dc" (or "eip155"/"tron");
 #   token: symbol (DHLU/USDC/USDT on EVM, USDT/USDD on TRON) or an asset address;
 #   omit the token to use that network's first advertised token.
 #   Use `@` (not `#`) — dotenv treats `#` as a comment and would truncate the value.
 # Unset ⇒ each configured chain once, with its first token.
-PAY_TARGETS=eip155:97@DHLU,tron:nile@USDT
+PAY_TARGETS=eip155:97@DHLU,tron:0xcd8690dc@USDT
 
 # The resource the client fetches (server route).
 RESOURCE_URL=http://localhost:4021/weather
@@ -40,7 +40,7 @@ MCP_SERVER_URL=http://localhost:4023
 # ── SERVER · the resource provider (servers/express · servers/mcp) ────────
 # Payout addresses (set the chain(s) you want to accept).
 EVM_ADDRESS=0x...   # BSC, eip155:97
-TRON_ADDRESS=T...   # TRON, tron:nile
+TRON_ADDRESS=T...   # TRON, tron:0xcd8690dc
 
 # Where the server binds, and where it reaches the facilitator.
 SERVER_PORT=4021

examples/typescript/.env-gasfree.example

@@ -30,7 +30,7 @@ RESOURCE_URL=http://localhost:4031/weather
 
 # ── SERVER · the resource provider (servers/gasfree) ──────────────────────
 # Payout address (TRON only).
-TRON_ADDRESS=T...   # TRON, tron:nile
+TRON_ADDRESS=T...   # TRON, tron:0xcd8690dc
 
 # Where the server binds, and where it reaches the facilitator.
 SERVER_PORT=4031

examples/typescript/.env-upto.example

@@ -21,11 +21,11 @@ TRON_GRID_API_KEY=
 
 # ── CLIENT · the payer (clients/upto) ─────────────────────────────────────
 # Which chains to exercise, one N-request run per entry, in order. Each entry is
-#   <network>[@<token>]  network: "eip155:97"/"tron:nile" (or "eip155"/"tron");
+#   <network>[@<token>]  network: "eip155:97"/"tron:0xcd8690dc" (or "eip155"/"tron");
 #   token optional (each chain advertises one: EVM=USDC, TRON=USDT) — symbol or
 #   asset address. Use `@` (not `#`) — dotenv treats `#` as a comment.
 # Unset ⇒ each configured chain once.
-PAY_TARGETS=eip155:97,tron:nile
+PAY_TARGETS=eip155:97,tron:0xcd8690dc
 
 # The resource the client fetches (server route).
 RESOURCE_URL=http://localhost:4051/generate
@@ -41,7 +41,7 @@ NUMBER_OF_REQUESTS=3
 # ── SERVER · the resource provider (servers/upto) ─────────────────────────
 # Payout addresses (set the chain(s) you want to accept).
 EVM_ADDRESS=0x...   # BSC, eip155:97 (token USDC, permit2)
-TRON_ADDRESS=T...   # TRON, tron:nile (token USDT, permit2)
+TRON_ADDRESS=T...   # TRON, tron:0xcd8690dc (token USDT, permit2)
 
 # Where the server binds, and where it reaches the facilitator.
 SERVER_PORT=4051

examples/typescript/README.md

@@ -91,8 +91,8 @@ amount and strips the header. BSC uses USDC, TRON Nile uses USDT — both Permit
 
 | Chain | Network | Token | Scheme | One-time approve | User pays gas? |
 |---|---|---|---|---|---|
-| TRON nile | `tron:nile` | USDT (6) | exact **permit2** | yes — client auto-broadcasts | only the approve (TRX) |
-| TRON nile | `tron:nile` | USDD (18) | exact **permit2** | yes — client auto-broadcasts | only the approve (TRX) |
+| TRON nile | `tron:0xcd8690dc` | USDT (6) | exact **permit2** | yes — client auto-broadcasts | only the approve (TRX) |
+| TRON nile | `tron:0xcd8690dc` | USDD (18) | exact **permit2** | yes — client auto-broadcasts | only the approve (TRX) |
 | BSC testnet | `eip155:97` | DHLU (6) | exact **eip3009** | none | **none (fully gasless)** |
 | BSC testnet | `eip155:97` | USDC (18) | exact **permit2 + gas-sponsoring** | yes — client signs, facilitator relays | only the approve (BNB) |
 
@@ -131,8 +131,8 @@ below). All verified on-chain; sources: the official
 | `eip155:56` (BSC) | USDC | `0x8AC76a51cc950d9822D68b83fE1Ad97B32Cd580d` | 18 | permit2 |
 | `eip155:56` (BSC) | USDT | `0x55d398326f99059fF775485246999027B3197955` | 18 | permit2 |
 | `eip155:56` (BSC) | EPS | `0xA7f552078dcC247C2684336020c03648500C6d9F` | 18 | permit2 |
-| `tron:mainnet` | USDT | `TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t` | 6 | permit2 |
-| `tron:mainnet` | USDD | `TXDk8mbtRbXeYuMNS83CfKPaYYT8XWv9Hz` | 18 | permit2 |
+| `tron:0x2b6653dc` | USDT | `TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t` | 6 | permit2 |
+| `tron:0x2b6653dc` | USDD | `TXDk8mbtRbXeYuMNS83CfKPaYYT8XWv9Hz` | 18 | permit2 |
 
 > BSC mainnet has **no ERC-3009 token** (USDC/USDT/EPS are all plain BEP-20) — so
 > mainnet EVM payments all go permit2 + gas-sponsored approve. DHLU (eip3009) is

examples/typescript/clients/batch-settlement/src/chains/tron.ts

@@ -4,7 +4,7 @@
  * the address and re-adds the `0x` prefix agent-wallet strips. The TronWeb
  * instance carries no private key.
  *
- * On `tron:nile` the server advertises USDT, a Permit2 token — the first request
+ * On `tron:0xcd8690dc` the server advertises USDT, a Permit2 token — the first request
  * opens the channel via a **Permit2 deposit**, which needs a one-time
  * `approve(Permit2)` from the payer. `signTransaction` lets the signer
  * auto-broadcast that approve (parity with the `exact` TRON client). Later
@@ -16,7 +16,7 @@ import type { x402Client } from "@bankofai/x402-fetch";
 
 import { tryResolveWallet, type BatchClientOptions, type RefundableScheme } from "../env.js";
 
-const TRON_NETWORK = "tron:nile";
+const TRON_NETWORK = "tron:0xcd8690dc";
 
 /**
  * Registers the TRON `batch-settlement` client scheme, if a TRON wallet is

examples/typescript/clients/batch-settlement/src/env.ts

@@ -20,7 +20,7 @@ export type SignerWallet = Wallet & {
  */
 const CAIP2_BY_FAMILY: Record<"evm" | "tron", string> = {
   evm: "eip155:97",
-  tron: "tron:nile",
+  tron: "tron:0xcd8690dc",
 };
 
 /**

examples/typescript/clients/batch-settlement/src/index.ts

@@ -10,7 +10,7 @@
  * target. This file imports no chain SDK directly.
  *
  * PAY_TARGETS — comma-separated, one burst (+refund) per entry, in order:
- *   <network>[@<token>]   network: "eip155:97"/"tron:nile" (or "eip155"/"tron");
+ *   <network>[@<token>]   network: "eip155:97"/"tron:0xcd8690dc" (or "eip155"/"tron");
  *   token: symbol or asset address; omit ⇒ the network's first advertised token.
  *   (`@` not `#` — dotenv treats `#` as a comment.)
  *   Unset ⇒ each configured chain once.
@@ -36,8 +36,8 @@ const opts: BatchClientOptions = {
 const TOKEN_ADDRESSES: Record<string, string> = {
   DHLU: "0x375cADdd2cB68cE82e3D9B075D551067a7b4B816", // eip155:97, ERC-3009
   USDC: "0x64544969ed7EBf5f083679233325356EbE738930", // eip155:97, permit2 (default)
-  USDT: "TXYZopYRdj2D9XRtbG411XZZ3kM5VkAeBf", // tron:nile, permit2 (default)
-  USDD: "TGjgvdTWWrybVLaVeFqSyVqJQWjxqRYbaK", // tron:nile, permit2
+  USDT: "TXYZopYRdj2D9XRtbG411XZZ3kM5VkAeBf", // tron:0xcd8690dc, permit2 (default)
+  USDD: "TGjgvdTWWrybVLaVeFqSyVqJQWjxqRYbaK", // tron:0xcd8690dc, permit2
 };
 
 /** A single payment target: a network prefix + optional asset address. */

examples/typescript/clients/fetch/src/chains/tron.ts

@@ -15,7 +15,7 @@ import type { x402Client } from "@bankofai/x402-fetch";
 
 import { tryResolveWallet } from "../env.js";
 
-const TRON_NETWORKS = ["tron:nile", "tron:mainnet"] as const;
+const TRON_NETWORKS = ["tron:0xcd8690dc", "tron:0x2b6653dc"] as const;
 
 /**
  * Registers the TRON `exact` client scheme, if a TRON wallet is configured.

examples/typescript/clients/fetch/src/env.ts

@@ -23,7 +23,7 @@ export type SignerWallet = Wallet & {
  */
 const CAIP2_BY_FAMILY: Record<"evm" | "tron", string> = {
   evm: "eip155:97",
-  tron: "tron:nile",
+  tron: "tron:0xcd8690dc",
 };
 
 /**

examples/typescript/clients/fetch/src/index.ts

@@ -10,10 +10,10 @@
  *
  * PAY_TARGETS — comma-separated, one payment per entry, in order:
  *   <network>[@<token>]
- *     <network>  matched by prefix: "eip155:97" / "tron:nile" (or "eip155" / "tron")
+ *     <network>  matched by prefix: "eip155:97" / "tron:0xcd8690dc" (or "eip155" / "tron")
  *     <token>    symbol (DHLU/USDC/USDT/USDD) or an asset address; omit ⇒ that
  *                network's first advertised token
- *   e.g. PAY_TARGETS=eip155:97@DHLU,tron:nile@USDT,tron:nile@USDD
+ *   e.g. PAY_TARGETS=eip155:97@DHLU,tron:0xcd8690dc@USDT,tron:0xcd8690dc@USDD
  *   (`@` not `#` — dotenv treats `#` as a comment.)
  *   Unset ⇒ each configured chain once, with its first advertised token.
  */
@@ -28,7 +28,7 @@ const RESOURCE_URL =
 // Friendly token symbol → asset address, mirroring what `servers/express`
 // advertises. Lets PAY_TARGETS name tokens by symbol instead of address.
 // Indexed by chain family so the same symbol can resolve differently per
-// network (e.g. USDT on eip155:97 vs tron:nile are different contracts).
+// network (e.g. USDT on eip155:97 vs tron:0xcd8690dc are different contracts).
 const TOKEN_ADDRESSES: Record<string, Record<string, string>> = {
   "eip155:97": {
     DHLU: "0x375cADdd2cB68cE82e3D9B075D551067a7b4B816", // eip155:97, ERC-3009
@@ -39,11 +39,11 @@ const TOKEN_ADDRESSES: Record<string, Record<string, string>> = {
     USDC: "0x8AC76a51cc950d9822D68b83fE1Ad97B32Cd580d",
     USDT: "0x55d398326f99059fF775485246999027B3197955",
   },
-  "tron:nile": {
-    USDT: "TXYZopYRdj2D9XRtbG411XZZ3kM5VkAeBf", // tron:nile, permit2
-    USDD: "TGjgvdTWWrybVLaVeFqSyVqJQWjxqRYbaK", // tron:nile, permit2
+  "tron:0xcd8690dc": {
+    USDT: "TXYZopYRdj2D9XRtbG411XZZ3kM5VkAeBf", // tron:0xcd8690dc, permit2
+    USDD: "TGjgvdTWWrybVLaVeFqSyVqJQWjxqRYbaK", // tron:0xcd8690dc, permit2
   },
-  "tron:mainnet": {
+  "tron:0x2b6653dc": {
     USDT: "TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t",
     USDD: "TXDk8mbtRbXeYuMNS83CfKPaYYT8XWv9Hz",
   },

examples/typescript/clients/gasfree/src/chains/tron.ts

@@ -16,7 +16,7 @@ import type { x402Client } from "@bankofai/x402-fetch";
 
 import { tryResolveTronWallet } from "../env.js";
 
-const TRON_NETWORK = "tron:nile";
+const TRON_NETWORK = "tron:0xcd8690dc";
 
 /**
  * Registers the TRON `exact_gasfree` client scheme, if a TRON wallet resolves.
@@ -43,7 +43,7 @@ export async function registerTronGasFree(client: x402Client): Promise<boolean>
   registerExactGasFreeTronScheme(client, {
     signer,
     ...(process.env.GASFREE_API_URL
-      ? { schemeOptions: { apiBaseUrls: { "tron:nile": process.env.GASFREE_API_URL } } }
+      ? { schemeOptions: { apiBaseUrls: { "tron:0xcd8690dc": process.env.GASFREE_API_URL } } }
       : {}),
   });
   console.info(`[tron] client registered tron:* exact_gasfree (${signer.address})`);

examples/typescript/clients/gasfree/src/env.ts

@@ -18,13 +18,13 @@ export type SignerWallet = Wallet & {
  *
  * `@bankofai/agent-wallet` expects a **CAIP-2** network id. Key derivation is
  * chain-id-independent within a family, so any `tron:` id resolves the same
- * address; we use `tron:nile`.
+ * address; we use `tron:0xcd8690dc`.
  *
  * @returns The wallet, or `null` to skip TRON.
  */
 export async function tryResolveTronWallet(): Promise<SignerWallet | null> {
   try {
-    return (await resolveWallet({ network: "tron:nile" })) as SignerWallet;
+    return (await resolveWallet({ network: "tron:0xcd8690dc" })) as SignerWallet;
   } catch {
     return null;
   }