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chore(config): switch DEMO/USDCx/PROMPT display addresses to synthetic placeholders #287

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Merged
salindne merged 1 commit into from
May 28, 2026
Merged

chore(config): switch DEMO/USDCx/PROMPT display addresses to synthetic placeholders #287

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2 changes: 1 addition & 1 deletion config.e2e-local.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -82,7 +82,7 @@ token:
symbol: "DEMO"
decimals: 18
instrument_id: "DEMO"
"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48":
"0xC1A0000000000000000000000000000000000001":
name: "USD Coin"
symbol: "USDCx"
decimals: 6
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2 changes: 1 addition & 1 deletion pkg/config/defaults/config.api-server.docker.yaml
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Expand Up @@ -86,7 +86,7 @@ token:
symbol: "DEMO"
decimals: 18
instrument_id: "DEMO"
"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48":
"0xC1A0000000000000000000000000000000000001":
name: "USD Coin"
symbol: "USDCx"
decimals: 6
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2 changes: 1 addition & 1 deletion pkg/config/defaults/config.api-server.local-devnet.yaml
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Expand Up @@ -79,7 +79,7 @@ token:
symbol: "DEMO"
decimals: 18
instrument_id: "DEMO"
"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48":
"0xC1A0000000000000000000000000000000000001":
name: "USD Coin"
symbol: "USDCx"
decimals: 6
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11 changes: 10 additions & 1 deletion pkg/config/defaults/config.api-server.mainnet.yaml
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Expand Up @@ -48,12 +48,21 @@ canton:

token:
supported_tokens:
# Display-only synthetic addresses for MetaMask. The api-server's
# eth_call balanceOf facade keys balances by these addresses. They must
# NOT collide with well-known mainnet token contracts (e.g. real USDC,
# USDT, etc.) or MetaMask flags imports as suspected phishing.
"0x9907000000000000000000000000000000000001":
name: "PROMPT"
symbol: "PROMPT"
decimals: 18
instrument_id: "PROMPT"
"0xDE30000000000000000000000000000000000001":
name: "Demo Token"
symbol: "DEMO"
decimals: 18
instrument_id: "DEMO"
"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48":
"0xC1A0000000000000000000000000000000000001":
name: "USD Coin"
symbol: "USDCx"
decimals: 6
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2 changes: 1 addition & 1 deletion pkg/config/tests/env-substitution.api.yaml
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Expand Up @@ -31,7 +31,7 @@ token:
symbol: "PROMPT"
decimals: 18
instrument_id: "PROMPT"
"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48":
"0xC1A0000000000000000000000000000000000001":
name: "USD Coin"
symbol: "USDCx"
decimals: 6
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2 changes: 1 addition & 1 deletion pkg/config/tests/invalid-database-url.api.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -31,7 +31,7 @@ token:
symbol: "PROMPT"
decimals: 18
instrument_id: "PROMPT"
"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48":
"0xC1A0000000000000000000000000000000000001":
name: "USD Coin"
symbol: "USDCx"
decimals: 6
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2 changes: 1 addition & 1 deletion pkg/config/tests/minimal.api.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -31,7 +31,7 @@ token:
symbol: "PROMPT"
decimals: 18
instrument_id: "PROMPT"
"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48":
"0xC1A0000000000000000000000000000000000001":
name: "USD Coin"
symbol: "USDCx"
decimals: 6
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2 changes: 1 addition & 1 deletion pkg/config/tests/missing-env.api.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -31,7 +31,7 @@ token:
symbol: "PROMPT"
decimals: 18
instrument_id: "PROMPT"
"0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48":
"0xC1A0000000000000000000000000000000000001":
name: "USD Coin"
symbol: "USDCx"
decimals: 6
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9 changes: 6 additions & 3 deletions tests/e2e/devstack/stack/types.go
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Expand Up @@ -23,9 +23,12 @@ const (
DemoTokenVirtualAddr = "0xDE30000000000000000000000000000000000001"

// USDCxTokenVirtualAddr is the well-known virtual EVM address mapped to the
// USDCx external token in the api-server configuration.
// #nosec G101 -- public deterministic EVM contract address, not a credential.
USDCxTokenVirtualAddr = "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"
// USDCx external token in the api-server configuration. Synthetic (no real
// on-chain meaning) so MetaMask's anti-phishing check — which compares
// imported token addresses against its known-mainnet-tokens registry — does
// not flag USDCx imports as a possible spoof of real-mainnet USDC.
// #nosec G101 -- synthetic placeholder EVM address, not a credential.
USDCxTokenVirtualAddr = "0xC1A0000000000000000000000000000000000001"
)

// CantonHolding is a minimal view of a CIP56Holding contract used by E2E tests.
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