← The evidence ledger
Evidence row 2199936
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://agents.avasis.ai/v1/base/tx-unstick
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 080198eb20592097731d71a4733462c6b10f4ddbaf147bcb6a280db0e2374b44
- Leaf
- 0x2eb124e44c6243514bc9358a0c6ee9c3503308496eaaec6a61d909d8d096de9e
What was observed
{
"endpoints": [
[
"x402",
"https://agents.avasis.ai/v1/base/tx-unstick"
]
],
"name": "Avasis Agent Platform",
"owner_address": "0x6264191d6dd5427435b5e829077842e130ef1fc8",
"raw": {
"accepts": [
{
"amount": "20000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 120,
"network": "eip155:8453",
"payTo": "0x6264191D6dD5427435B5E829077842e130Ef1fc8",
"scheme": "exact"
}
],
"description": "Tx unstick on Base (chain 8453, $0.02): address (+ tx hash or nonce, urgency) -> stuck transaction diagnosis: confirmed vs pending nonce (nonce gap), tx state next / queued / superseded / mined, max fee below base fee, low tip; EIP-1559 replacement plan (+10 % rule, fee tier), ready-to-sign cancel + speed-up, cost ETH + USD, can_pay. Phrases: stuck transaction, tx unstick, replace transaction, cancel transaction, nonce gap. GET or POST JSON. Unknown hash + nothing pending -> 404, never charged.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"address": "0xf977814e90da44bfa03b6295a0616a897441acec",
"chain": "base",
"tx": "0x5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c",
"urgency": "high"
},
"type": "http"
},
"output": {
"example": {
"address": "0xf977814e90da44bfa03b6295a0616a897441acec",
"block_number": 53354727,
"block_timestamp": 1793498801,
"cancel": {
"chainId": "0x2105",
"data": "0x",
"from": "0xf977814e90da44bfa03b6295a0616a897441acec",
"gas": "0x5208",
"maxFeePerGas": "0xaf79e0",
"maxPriorityFeePerGas": "0x16e360",
"nonce": "0x79ed9",
"note": "ready to sign from `from`: a 0-value self-transfer with the stuck nonce and the bumped fees; signing and broadcasting it drops the original",
"to": "0xf977814e90da44bfa03b6295a0616a897441acec",
"type": "0x2",
"value": "0x0"
},
"chain": "base",
"chain_id": 8453,
"cost": {
"balance_eth": "0.0421",
"balance_wei": "42100000000000000",
"can_pay_cancel": true,
"cancel_expected": {
"eth": 1.365e-7,
"usd": 0.000306156,
"wei": "136500000000"
},
"cancel_max": {
"eth": 2.415e-7,
"usd": 0.00054166,
"wei": "241500000000"
},
"eth_usd": 2242.9,
"note": "21000 gas at the replacement fees (max = authorized ceiling, expected = base fee + tip); excludes the Base L1 data fee (~$0.0003-0.001 per tx, priced by /v1/base/fee-plan); the speed-up costs its own gas limit x the same fees",
"price_source": "chainlink ETH/USD (latestRoundData)"
},
"fee_market": {
"base_fee_gwei": 0.005,
"priority_basis": "node eth_maxPriorityFeePerGas",
"priority_gwei": 0.001,
"tier": {
"max_fee_per_gas": {
"gwei": 0.0115,
"wei": "11500000"
},
"max_priority_fee_per_gas": {
"gwei": 0.0015,
"wei": "1500000"
},
"tier": "fast",
"when": "busy blocks: out-bid the median tip"
},
"urgency": "high"
},
"headline": "STUCK UNDERPRICED on Base: maxFeePerGas 0.004 gwei is below the current base fee 0.005 gwei: the tx cannot be included until the base fee drops; replace it with the same nonce 499417 at the fast tier (+10 % rule applied); cancel = nonce 499417 at 0.0115 gwei max / 0.0015 gwei tip ($0.0003)",
"kind": "tx-unstick",
"nonces": {
"confirmed": 499417,
"gap": 4,
"mempool_visible": true,
"note": "pending = this node's pending-nonce view (no txpool RPC on public hosts): a gap of 0 can still hide a tx in a private mempool",
"pending": 499421
},
"rail": "evm-tx-unstick-1",
"reads": {
"calls": 9,
"elapsed_ms": 7,
"rpc": "fixture"
},
"replacement": {
"basis": "fast tier already above +10 % of the original",
"max_fee_per_gas": {
"gwei": 0.0115,
"wei": "11500000"
},
"max_priority_fee_per_gas": {
"gwei": 0.0015,
"wei": "1500000"
},
"min_max_fee_gwei": 0.004400001,
"min_priority_fee_gwei": 0.000110001,
"nonce": 499417,
"priority_basis": "node eth_maxPriorityFeePerGas",
"rule": "same nonce; maxPriorityFeePerGas AND maxFeePerGas each >= original x 1.10 (geth / op-geth), never below the chosen tier, maxFee >= 2 x base fee + priority",
"tier": "fast",
"urgency": "high"
},
"speed_up": {
"chainId": "0x2105",
"data": "0xa9059cbb000000000000000000000000128b1240168fcb68bd2d98d718e559337722c93a000000000000000000000000000000000000000000000000000000000038c340",
"from": "0xf977814e90da44bfa03b6295a0616a897441acec",
"gas": "0x124f8",
"maxFeePerGas": "0xaf79e0",
"maxPriorityFeePerGas": "0x16e360",
"nonce": "0x79ed9",
"note": "the original call with the bumped fees (same nonce, to, value, data, gas): re-simulate before signing at /v1/base/tx-precheck",
"to": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
"type": "0x2",
"value": "0x0"
},
"tx": {
"block_number": null,
"found": true,
"gas_limit": 75000,
"hash": "0x5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c5c",
"input": {
"args": {
"amount_raw": "3720000",
"spender_or_to": "0x128b1240168fcb68bd2d98d718e559337722c93a"
},
"kind": "transfer",
"method": "transfer",
"selector": "0xa9059cbb",
"signature": "transfer(address,uint256)",
"to_known": "USDC (Circle)"
},
"low_tip": true,
"max_fee_per_gas_gwei": 0.004,
"max_priority_fee_per_gas_gwei": 0.0001,
"mined": false,
"nonce": 499417,
"queued_behind": 0,
"state": "next",
"status": "pending",
"to": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
"type": "eip-1559",
"underpriced": true,
"value_eth": "0",
"value_wei": "0"
},
"verdict": {
"action": "replace",
"level": "STUCK_UNDERPRICED",
"reasons": [
"maxFeePerGas 0.004 gwei is below the current base fee 0.005 gwei: the tx cannot be included until the base fee drops; replace it with the same nonce 499417 at the fast tier (+10 % rule applied)"
],
"stuck": true
}
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"additionalProperties": false,
"properties": {
"address": {
"description": "the sender wallet of the stuck transaction (0x + 40 hex)",
"type": "string"
},
"chain": {
"description": "optional; must be base / 8453 on this route",
"type": "string"
},
"nonce": {
"description": "optional: the stuck nonce when you have no hash",
"minimum": 0,
"type": "integer"
},
"tx": {
"description": "optional: the pending transaction hash to replace (0x + 64 hex); its state, fees and a ready-to-sign speed-up come from it",
"type": "string"
},
"urgency": {
"description": "fee tier of the replacement: low / normal / high / next_block (default high)",
"type": "string"
}
},
"required": [
"address"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"address": {
"type": "string"
},
"also_available": {
"type": "object"
},
"block_number": {
"type": "integer"
},
"cancel": {
"type": [
"object",
"null"
]
},
"chain": {
"type": "string"
},
"chain_id": {
"type": "integer"
},
"cost": {
"type": [
"object",
"null"
]
},
"fee_market": {
"type": "object"
},
"headline": {
"type": "string"
},
"kind": {
"type": "string"
},
"nonces": {
"type": "object"
},
"rail": {
"type": "string"
},
"replacement": {
"type": [
"object",
"null"
]
},
"speed_up": {
"type": [
"object",
"null"
]
},
"tx": {
"type": [
"object",
"null"
]
},
"verdict": {
"type": "object"
}
},
"required": [
"chain",
"address",
"verdict",
"nonces",
"fee_market",
"headline"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
},
"builder-code": {
"info": {
"a": "bc_d5i1omim"
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false,
"properties": {
"a": {
"description": "App builder code",
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
},
"s": {
"description": "Service builder codes",
"items": {
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
},
"maxItems": 11,
"type": "array"
},
"w": {
"description": "Wallet builder code",
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
}
},
"type": "object"
}
}
},
"lastUpdated": "2026-11-02T17:35:09.361Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-11-02T17:35:09.244Z"
},
"resource": "https://agents.avasis.ai/v1/base/tx-unstick",
"serviceName": "Avasis Agent Platform",
"tags": [
"tx-unstick",
"stuck-transaction",
"replacement-fee",
"nonce",
"evm"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Tx unstick on Base (chain 8453, $0.02): address (+ tx hash or nonce, urgency) -> stuck transaction diagnosis: confirmed vs pending nonce (nonce gap), tx state next / queued / superseded / mined, max fee below base fee, low tip; EIP-1559 replacement plan (+10 % rule, fee tier), ready-to-sign cancel + speed-up, cost ETH + USD, can_pay. Phrases: stuck transaction, tx unstick, replace transaction, cancel transaction, nonce gap. GET or POST JSON. Unknown hash + nothing pending -> 404, never charged."
}What the leaf hashes
{"body":"080198eb20592097731d71a4733462c6b10f4ddbaf147bcb6a280db0e2374b44","id":2199936,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646793678475,"prev":null,"subject":"x402_bazaar:https://agents.avasis.ai/v1/base/tx-unstick","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (444186 rows).
- 0x2eb15b83071bab04166c7f96588d899d2099bed082bcfb91924ec86b588a4f01
- 0x0b77c80db808844998043d411741ea44827ff40fb6ee95df165d07d0be1a0863
- 0x7d9501775d342d72dff1e1079d96af6db1b0ec111b727b91edf71d2d6d3104cc
- 0x2fcef2ffb4bb756a8099c1753ede748969cf0dd764e7551d92368803a5d31180
- 0x6e1b683cb90ccb75993d5e4b75d266022457437971e72edb4d057c20e8ef90a9
- 0xf4a77686fe9a23a1b3568ef60d7cd34f1251705ee26df6607eaf4bc99cee4e20
- 0x71e047252198a5f8e10e7bc4141b1919a70df257e1d094c9c13dc2785cbc1b1d
- 0x45fbd2dc70c034e699592bcff133714a79bcbf4ed95d46284977a30e3f045781
- 0x9d30696313177c6a8378ef1175eb5703d7cfd91b81ff1412a735b4e130326ded
- 0x6623e510198d6996a478259073afb23fc5bf6880d01aa652867f79adfd254074
- 0xe24a6c1708ae5167e88e2d01e0d5eed4eaaac23736fdc7b30192d6ac9ae9e781
- 0xa39f479631c3d9f1120fe6d97a0b21058e85f7acd7b66ba73bd6582ec4dd0f36
- 0xf1aa667ce80c3cfa851957b2154c374229551d079e3666ba4d1ea5e32bfbe79b
- 0x037a66c2ea899586d58b52761f6b950a97cda22bb80294e40013ebea171a684f
- 0x9cb76be6423133397c3da69f801d6af35dcce77b458aa17bd796c877ed7bc8fd
- 0xd42916b5c6441e9c8d91ff91715af1489cb83dee26d47e7da107caa4d2a68b65
- 0xa20b9be86af7d690e040c9060a373b2fc5498edf3432f43c26f74fa2febc1e9a
- 0x050f2978b537f7afb21ee1551577cdf146d1c56f4df12d24315ae5e69366b0a4
- 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e
- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af