P01 / Observed
Factual DataSelector0x095ea7b3
FunctionStandard approve()
Asset labelUSDC (user supplied)
Spender0x1a2b3c4d5e6f7081920a3b4c5d6e7f8090a1b22f (decoded input)
Amount2^256-1 / Max uint256
NetworkEthereum
State Delta & Blast Radius Ledger
Explain Depth
[TECHNICAL] Standard detail. Shows function selectors, token standards, and inferred capabilities with moderate context.
Analyze Workspace
Local decode only[READY] Decoded selector 0x095ea7b3 as approve(address,uint256). Network: Ethereum. Spender source: calldata.
P02 / Inferred
ConsequencesTypeRecognized selector
StandardCommon ERC-20 signature
ScopeMaximum amount encoded
PersistentNot resolvable locally
AttentionReview recommended
P03 / Unresolved Context
Local limitsContract IdentityNot resolved locally
Spender IdentityNot resolved locally
TimelockNot resolvable locally
UpgradeableNot resolvable locally
Decoded Approval Input / Review Before Signing
SIGNAL recognized the approve(address,uint256) selector and decoded a maximum uint256 amount. If the target follows standard ERC-20 semantics, you can remove an allowance by calling approve(spender, 0) from the owner account or by using a trusted allowance-management interface. SIGNAL does not verify the target, its code, or its behavior on-chain.
Cyber Authority Flow Schematic
Select a node to inspectNode Detail / Recognized Selector
The selector matches the common approve(address,uint256) signature. This identifies an input pattern, not verified target code or transaction behavior.
Data Correlation
Selector ↔ ABIapprove(address,uint256)
Input label ↔ NetworkUSDC (user supplied) @ Ethereum
Allowance ↔ ThreatMaximum amount encoded
Spender ↔ LabelsNot resolved locally
Decode ↔ Sourcecalldata
Conditions & Attention
ExpiryNot resolvable locally
Standard revocationapprove(spender, 0)
Confirmation DepthNot simulated
AttentionReview recommended
Next stepConfirm target independently
Capability Matrix Grid
DetectedNot DetectedUnknown
Approval selector
approve(address,uint256) decoded
Maximum amount
Max uint256 encoded
Persistent Authority
Not resolvable locally
Attention
Target identity not verified by SIGNAL
Role Management
Not assessable from calldata alone
Upgradeable Logic
Not assessable from calldata alone
Timelock
Not assessable from calldata alone
Pausable
Not assessable from calldata alone
Transfer Hook
Not assessable from calldata alone
Blocklist
Not assessable from calldata alone
Bytecode / Selector Annotation
Local decode0x095ea7b3 // selector: approve(address,uint256) 0000000000000000000000001a2b3c4d5e6f7081920a3b4c5d6e7f8090a1b22f // arg0: spender ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff // arg1: 2^256-1 (max) // no wallet, RPC, or on-chain execution performed
Methodology & Disclaimer
Local-onlySIGNAL is a local, browser-side calldata inspector. It decodes calldata deterministically, infers capabilities from known selectors and standards, and flags unknowns that require human review. It does not execute, connect a wallet, perform RPC calls, fetch source, or perform on-chain audits. Detected means a known pattern matched; Not Detected means no evidence was found in the sampled data, not a guarantee of absence; Unknown means the relevant field could not be resolved from available context. Results are not live verification or an audit. Always confirm spenders and contract identities independently before signing.
Raw Calldata
Raw Calldata Viewer
0x095ea7b3 // function selector 0000000000000000000000001a2b3c4d5e6f7081920a3b4c5d6e7f8090a1b22f // address: spender ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff // uint256: 2^256-1 (max)