{
  "id": "m0-mountain-man",
  "title": "The Mountain Man",
  "context": {
    "wallet": "own tooling + air-gapped signer",
    "platform": "own hardware",
    "network": "mainnet",
    "settings": "own archive node, self-hosted Otterscan"
  },
  "toggles": [],
  "_comment": "The platonic ideal from the call — the reference footprint every other route is measured against. provenance=reference: a constructed flow, not a traced product.",
  "steps": [
    {
      "id": "check-recipient",
      "phase": "home",
      "name": "Own node · check recipient",
      "host": "localhost:8545",
      "actor": "self",
      "purpose": "Fat-finger check: nonce, history, balance",
      "need": "R",
      "carries": [
        "recipient"
      ],
      "returns": "confidence the address is right",
      "can_block": false,
      "on_failure": "degrade",
      "worst_lie": {
        "outcome": "none",
        "note": "his own archive node"
      },
      "removable_by": "none",
      "provenance": {
        "status": "reference",
        "ref": "call 2026-08-20, ~52:30"
      },
      "tx_input": "gate",
      "gadget": "rpc"
    },
    {
      "id": "construct-local",
      "phase": "home",
      "name": "Own node · nonce · fees · gas",
      "host": "localhost:8545",
      "actor": "self",
      "purpose": "eth_getTransactionCount, eth_feeHistory, eth_estimateGas",
      "need": "RC",
      "carries": [
        "selected_address",
        "recipient",
        "amount"
      ],
      "returns": "everything needed to sign",
      "can_block": false,
      "on_failure": "blocks",
      "worst_lie": {
        "outcome": "none"
      },
      "removable_by": "none",
      "provenance": {
        "status": "reference",
        "ref": "same reads as M1, served locally"
      },
      "tx_input": "field",
      "gadget": "rpc"
    },
    {
      "id": "sign-airgap",
      "phase": "home",
      "name": "Air-gapped signer",
      "host": "no network",
      "actor": "self",
      "purpose": "Sign on an isolated machine",
      "need": "C",
      "carries": [
        "selected_address",
        "recipient",
        "amount"
      ],
      "returns": "the signed tx",
      "can_block": false,
      "on_failure": "blocks",
      "worst_lie": {
        "outcome": "none"
      },
      "removable_by": "none",
      "provenance": {
        "status": "reference",
        "ref": "call 2026-08-20, ~53:59"
      }
    },
    {
      "id": "p2p-broadcast",
      "phase": "broadcast",
      "name": "Public p2p mempool",
      "host": "devp2p gossip",
      "actor": "ethereum-p2p",
      "purpose": "Gossip the signed tx",
      "need": "W",
      "carries": [
        "ip",
        "signed_tx"
      ],
      "returns": "propagation",
      "can_block": false,
      "on_failure": "degrade",
      "failure_note": "rebroadcast to other peers",
      "worst_lie": {
        "outcome": "none"
      },
      "removable_by": "none",
      "provenance": {
        "status": "reference",
        "ref": "devp2p"
      },
      "gadget": "relay-broadcast"
    },
    {
      "id": "inclusion",
      "phase": "broadcast",
      "name": "Builders + relays",
      "host": "(builder network)",
      "actor": "builders",
      "purpose": "Build + propose the block",
      "need": "W",
      "carries": [
        "signed_tx"
      ],
      "returns": "finality",
      "can_block": true,
      "on_failure": "blocks",
      "failure_note": "OFAC filtering possible",
      "worst_lie": {
        "outcome": "none"
      },
      "removable_by": "none",
      "provenance": {
        "status": "code",
        "ref": "MEV-Boost relays"
      },
      "fixed_by": [
        "cr-broadcast"
      ],
      "gadget": "builder"
    },
    {
      "id": "receipt-local",
      "phase": "confirm",
      "name": "Own node · receipt",
      "host": "localhost:8545",
      "actor": "self",
      "purpose": "eth_getTransactionReceipt",
      "need": "R",
      "carries": [
        "tx_hash"
      ],
      "returns": "confirmed state",
      "can_block": false,
      "on_failure": "degrade",
      "worst_lie": {
        "outcome": "none"
      },
      "removable_by": "none",
      "provenance": {
        "status": "reference",
        "ref": "local RPC"
      },
      "gadget": "rpc"
    },
    {
      "id": "otterscan",
      "phase": "confirm",
      "name": "Otterscan (self-hosted)",
      "host": "localhost:5100",
      "actor": "self",
      "purpose": "Browse the confirmation",
      "need": "R",
      "carries": [
        "tx_hash"
      ],
      "returns": "human confirmation",
      "can_block": false,
      "on_failure": "degrade",
      "worst_lie": {
        "outcome": "none"
      },
      "removable_by": "none",
      "provenance": {
        "status": "reference",
        "ref": "call 2026-08-20, ~50:52"
      },
      "gadget": "verification-explorer"
    }
  ]
}