{
 "snapshot_date": "2026-07-24",
 "reference_route": "USD -> USDC (Coinbase, ACH funding) -> Base network -> local off-ramp",
 "note": "Component model per ADR-0003: every item carries verification status. pct items are % of amount sent; fixed items are USD. Totals are computed by the page as sum(pct) + sum(fixed)/amount.",
 "corridors": {
  "MEX": {
   "off_ramp_venue": "Bitso (Mexico)",
   "components": [
    {"label": "USD -> USDC on Coinbase (ACH funding)", "pct": 0.0, "fixed_usd": 0.0, "status": "secondary", "source": "Coinbase fee breakdowns (bitdegree.org/crypto/tutorials/coinbase-fees; cryptsy.com/coinbase-fees), 2026: no spread or trading fee on USD-USDC, ACH deposits free", "source_url": "https://www.bitdegree.org/crypto/tutorials/coinbase-fees"},
    {"label": "USDC transfer on Base", "pct": 0.0, "fixed_usd": 0.05, "status": "secondary", "source": "Base network fee guides (chaincost.app), 2026: Coinbase routes USDC to Base with no withdrawal fee; onchain fee typically under $0.05", "source_url": "https://chaincost.app/guides/base-network-fees/"},
    {"label": "USDC -> MXN on Bitso (taker, lowest volume tier)", "pct": 0.36, "fixed_usd": 0.0, "status": "verified", "source": "bitso.com/fees fetched 2026-07-24: USDC/MXN taker 0.360% under $1,000 volume", "source_url": "https://bitso.com/fees"},
    {"label": "Order-book spread allowance", "pct": 0.25, "fixed_usd": 0.0, "status": "estimate", "source": "Conservative allowance; spot spread not captured in snapshot", "source_url": null},
    {"label": "MXN payout via SPEI", "pct": 0.0, "fixed_usd": 0.0, "status": "estimate", "source": "SPEI withdrawal fee not listed on the public fee page fetched 2026-07-24; assumed 0, flagged per ADR-0003", "source_url": "https://bitso.com/fees"}
   ]
  },
  "COL": {
   "off_ramp_venue": "Bitso (Colombia)",
   "components": [
    {"label": "USD -> USDC on Coinbase (ACH funding)", "pct": 0.0, "fixed_usd": 0.0, "status": "secondary", "source": "Coinbase fee breakdowns (bitdegree.org/crypto/tutorials/coinbase-fees; cryptsy.com/coinbase-fees), 2026: no spread or trading fee on USD-USDC, ACH deposits free", "source_url": "https://www.bitdegree.org/crypto/tutorials/coinbase-fees"},
    {"label": "USDC transfer on Base", "pct": 0.0, "fixed_usd": 0.05, "status": "secondary", "source": "Base network fee guides (chaincost.app), 2026: Coinbase routes USDC to Base with no withdrawal fee; onchain fee typically under $0.05", "source_url": "https://chaincost.app/guides/base-network-fees/"},
    {"label": "USDC -> COP on Bitso (taker, lowest COP tier)", "pct": 0.65, "fixed_usd": 0.0, "status": "verified", "source": "bitso.com/fees fetched 2026-07-24: COP pairs taker 0.650% lowest tier. Direct USDC/COP pair not explicitly confirmed on the fee page; routing may add a hop", "source_url": "https://bitso.com/fees"},
    {"label": "Order-book spread allowance", "pct": 0.35, "fixed_usd": 0.0, "status": "estimate", "source": "Conservative allowance, wider than MXN reflecting thinner COP books; not captured in snapshot", "source_url": null},
    {"label": "COP payout (local transfer)", "pct": 0.0, "fixed_usd": 0.0, "status": "estimate", "source": "COP withdrawal fee not listed on the public fee page fetched 2026-07-24; assumed 0, flagged per ADR-0003", "source_url": "https://bitso.com/fees"}
   ]
  },
  "GTM": {
   "off_ramp_venue": "No regulated local exchange; P2P off-ramp",
   "components": [
    {"label": "USD -> USDC on Coinbase (ACH funding)", "pct": 0.0, "fixed_usd": 0.0, "status": "secondary", "source": "Coinbase fee breakdowns (bitdegree.org/crypto/tutorials/coinbase-fees; cryptsy.com/coinbase-fees), 2026: no spread or trading fee on USD-USDC, ACH deposits free", "source_url": "https://www.bitdegree.org/crypto/tutorials/coinbase-fees"},
    {"label": "USDC transfer on Base", "pct": 0.0, "fixed_usd": 0.05, "status": "secondary", "source": "Base network fee guides (chaincost.app), 2026: Coinbase routes USDC to Base with no withdrawal fee; onchain fee typically under $0.05", "source_url": "https://chaincost.app/guides/base-network-fees/"},
    {"label": "USDC -> GTQ via P2P (spread band midpoint)", "pct": 1.75, "fixed_usd": 0.0, "status": "estimate", "source": "No regulated GTQ off-ramp found in snapshot; P2P spreads observed in the 1.0-2.5% range historically. Shipped as flagged band midpoint per ADR-0003; band shown on page", "source_url": null, "band_pct": [1.0, 2.5]}
   ],
   "caveat": "This corridor is the honest asymmetry: the stablecoin rail's cost is dominated by missing off-ramp infrastructure, not by protocol fees."
  }
 }
}