sol mainnet payouts tasks

docs/PRD.md

@@ -92,7 +92,7 @@ The gateway receives a client request, asks the tracker for an inference route (
 7. Begin accepting inference connections
 
 ### Payment flow (ADR-0015 supersedes ADR-0002 settlement mechanics)
-Clients pre-fund an API key with USDT. The tracker meters each request against the off-chain ledger. Periodic settlement batches USDT payouts from the custodial treasury to node operators proportional to work units. Fraud penalties forfeit pending balance (ADR-0018); strike/ban state persists in the tracker registry. TAI token emission remains deferred (ADR-0002 roadmap).
+Clients pre-fund an API key with USDT. The tracker meters each request against the off-chain ledger. Periodic settlement batches USDT payouts from the custodial treasury to node operators proportional to work units (default: every 24 h or when pending ≥ 5 USDT). Fraud penalties forfeit pending balance (ADR-0018); strike/ban state persists in the tracker registry. TAI reward accrual is deferred — see ADR-0025 for reserved-mint / off-chain phase B/C; ADR-0002 roadmap for public listing.
 
 ### Fraud detection (ADR-0018; historical ADR-0003)
 Validators re-run ~5% of completed requests with TOPLOC activation verification. Caught cheaters forfeit pending balance and receive strikes; three strikes bans the wallet. Probation (first N unpaid jobs) remains the anti-sybil re-entry cost.

docs/adr/0025-tai-off-chain-accrual-and-reserved-mint.md

@@ -0,0 +1,52 @@
+# ADR-0025: TAI reserved mint and off-chain accrual (phase B/C)
+
+## Status: Accepted
+
+## Context
+
+ADR-0015 chose **USDT-direct custodial settlement** for alpha and near-term production. Clients pay USDT; nodes receive batched USDT SPL payouts. ADR-0002's TAI reward token, revenue-backed floor, and open-market listing gates remain the long-term design but are **not** the live payment path.
+
+The owner wants TAI to exist without the cost and legal surface of a public launch: no AMM, no open listing, no client-facing TAI, no on-chain stake machinery.
+
+## Decision
+
+### Phase B — Reserved mainnet mint (cheap, optional early)
+
+- Create a fixed-supply TAI SPL mint on **mainnet** when treasury work happens (~0.002 SOL).
+- Entire initial supply sits in a **team-controlled** wallet (same custody posture as the USDT treasury today).
+- **No public emission, no market, no client UX.** Mint exists for name reservation and future programmatic rewards only.
+- Document mint address in operator config; do not advertise to users.
+
+### Phase C — Off-chain TAI accrual alongside USDT (before automatic on-chain TAI payouts)
+
+- Extend the billing ledger with **`tai_pending[wallet]`** accrued from completed inference work using a simple rule (e.g. USDT node share × configurable TAI-per-USDT rate, or fixed TAI per work unit).
+- TAI accrual is **display-only + ledger-persisted** initially; nodes see pending TAI in dashboard/CLI.
+- **Clients never pay or hold TAI.** USDT remains the only client-facing asset.
+- Optional manual or scheduled **TAI SPL batch transfers** from the team wallet (same batching pattern as USDT `send_payouts`) — operator-triggered until automatic emission is justified by volume.
+- The existing **10% protocol USDT cut** continues to accumulate as future TAI liquidity per ADR-0015/0002; do not redirect it until a deliberate liquidity event.
+
+### Explicit non-goals (this ADR)
+
+- Open-market listing, AMM, or DEX liquidity
+- Buyback floor endpoint or backing-price oracle (ADR-0002 machinery)
+- On-chain stake deposits or slash contracts
+- Paying clients rebates or accepting TAI for inference
+- Replacing USDT node payouts with TAI-only payouts before volume gates in ADR-0002 pass
+
+## Relation to ADR-0002 listing gates
+
+Public TAI listing stays gated on **$50k cumulative USDT volume** and **25+ nodes / 15+ wallets**. Phase B/C may proceed **below** those gates because they do not create a public market — only reserved supply and off-chain accounting.
+
+Securities review remains required before any **public** distribution or listing; off-chain accrual to hired/known operators with manual SPL transfers is an operator discretion, not a product promise.
+
+## Consequences
+
+- USDT mainnet pilot (two-wallet setup) is unblocked without TAI complexity.
+- TAI narrative is preserved at minimal cost (mint + ledger column + optional manual transfers).
+- Automatic TAI emission can later reuse the US-033 settlement loop shape with a second mint and separate pending bucket.
+- Dashboard and APIs must label TAI balances as **non-withdrawable** until an on-chain payout batch confirms.
+
+## Verification
+
+- USDT settlement tests remain authoritative for production payouts (`tests/test_settlement_loop.py`).
+- When phase C lands: ledger tests for `tai_pending` accrual, idempotent gossip replication, and optional TAI batch payout adapter tests mirroring USDT.

docs/issues/49-mainnet-usdt-cutover-two-wallet-pilot.md

@@ -0,0 +1,101 @@
+Status: ready-for-agent
+
+# US-049 — Mainnet USDT cutover: two-wallet pilot checklist
+
+Priority: High (first real-money friends test)
+Stage: Operator runbook + config verification
+
+## Goal
+
+Move from **Solana devnet + mock-USDT** to **Solana mainnet + real USDT** for a minimal pilot: **one client wallet** (inference payer) and **one node-operator wallet** (payout recipient). Treasury holds USDT and pays SOL fees. TAI stays phase B/C per [ADR-0025](../adr/0025-tai-off-chain-accrual-and-reserved-mint.md).
+
+## Wallet roles
+
+| Role | Keypair | On-chain use |
+|---|---|---|
+| **Treasury** | Operator `treasury-keypair.json` (multisig when ready) | Holds USDT float + SOL for fees; sends batched node payouts |
+| **Client** | Your inference-user wallet | SPL USDT → treasury; bound to API key for ledger credit |
+| **Node** | Your node-operator wallet | Receives USDT payout batches from treasury |
+
+The node process already creates/loads a Solana wallet at startup; the client wallet is bound via accounts/dashboard (`POST /v1/wallet/register` or US-041 flows).
+
+## Pre-flight (devnet smoke — do not skip)
+
+- [ ] Tracker with `--solana-rpc-url https://api.devnet.solana.com`, mock mint, treasury keypair
+- [ ] `--settle-period 60 --payout-threshold 0` — confirm payout appears on dashboard **Settlement history** with explorer link
+- [ ] Run `python -m pytest tests/test_settlement_loop.py -q` — includes prod 24h/5 USDT gate tests
+- [ ] One inference request → node pending → settlement tx → node wallet balance increases
+
+## Mainnet config change (config-only cutover)
+
+Replace devnet values; **no code deploy required** beyond what is already on the branch.
+
+```bash
+# Example — use your mainnet RPC provider
+meshnet-tracker start \
+  --solana-rpc-url https://api.mainnet-beta.solana.com \
+  --usdt-mint EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v \
+  --treasury-keypair ~/.config/solana/meshnet-treasury-mainnet.json \
+  --settle-period 86400 \
+  --payout-threshold 5.0 \
+  --payout-dust-floor 0.01 \
+  --starting-credit 0 \
+  --devnet-topup 0
+```
+
+| Flag | Devnet (test) | Mainnet (pilot) |
+|---|---|---|
+| RPC | `api.devnet.solana.com` | Mainnet RPC (Helius/QuickNode/etc.) |
+| `--usdt-mint` | mock mint from `devnet_setup.py` | Real USDT mint (`EPjF…` on Solana) |
+| `--settle-period` | `60` (fast verify) | `86400` (24 h) |
+| `--payout-threshold` | `0` | `5.0` USDT |
+| `--starting-credit` | `1.0` (optional) | `0` |
+| `--devnet-topup` | `1.0` | `0` |
+
+## Treasury funding
+
+- [ ] Fund treasury wallet with **SOL** for fees (~0.1–0.5 SOL to start; ~$0.001 per daily batch + ~$0.30 once per new node ATA)
+- [ ] Fund treasury with **USDT** for node payouts (your float — e.g. first week of expected node earnings)
+- [ ] Client wallet holds USDT; send a test SPL transfer to treasury ATA; confirm deposit watcher credits API key within one poll interval
+
+## Two-wallet pilot steps
+
+1. **Start tracker** on mainnet config above (single settlement tracker per ADR-0016).
+2. **Client path:** register account → create API key → bind **client wallet** → deposit USDT to treasury → verify ledger balance on dashboard.
+3. **Node path:** start `meshnet-node` with **node wallet** keypair → register → serve inference.
+4. **Inference:** client sends `POST /v1/chat/completions` with API key; verify 402 before deposit, success after.
+5. **Accrual:** confirm node **pending USDT** on dashboard rises; client balance debits.
+6. **Payout (24 h):** wait for `--settle-period` **or** temporarily lower to `300` for first pilot verification, then restore `86400`.
+7. **Threshold path:** alternatively, accumulate ≥ `5` USDT pending in one session to trigger immediate batch without waiting 24 h.
+8. **Verify on-chain:** settlement history shows mainnet tx signature; node wallet USDT ATA balance increased; pending zeroed.
+
+## Safety checks
+
+- [ ] `--devnet-topup 0` — no faucet on mainnet
+- [ ] `--starting-credit 0` — no free inference credit
+- [ ] Treasury keypair not committed to git; file mode 600
+- [ ] Plan multisig migration before large float ([alpha runbook](../../.scratch/alpha-hardening/runbooks/02-treasury-key-rotation.md) intent)
+- [ ] Issue **21** (TOPLOC calibration) before production audit thresholds on untrusted nodes
+
+## Cost estimate (this pilot)
+
+- **SOL fees:** pennies per day at 1 batch × 1 node
+- **USDT:** whatever clients deposit and nodes earn (treasury is passthrough for payouts)
+- **TAI mint (optional, ADR-0025 phase B):** ~0.002 SOL one-time — defer if not needed for pilot
+
+## Acceptance criteria
+
+- [ ] Devnet checklist completed once
+- [ ] Mainnet tracker serves dashboard; billing enabled
+- [ ] Client wallet deposit → ledger credit → inference → debit
+- [ ] Node wallet receives ≥1 confirmed USDT payout batch on mainnet
+- [ ] 24 h period enforced: sub-threshold pending not paid before period (covered by `tests/test_settlement_loop.py`)
+- [ ] ≥5 USDT pending triggers payout without waiting full period (covered by tests)
+- [ ] Rollback documented: switch RPC + mint back to devnet if needed
+
+## Related
+
+- ADR-0015 (USDT custodial settlement)
+- ADR-0025 (TAI reserved mint / off-chain accrual — not blocking this pilot)
+- US-033 / US-032 (settlement + deposits)
+- `scripts/devnet_setup.py` (devnet only)

docs/prd.json

@@ -1051,10 +1051,31 @@
         "US-046"
       ],
       "completionNotes": "Skip auto-join when model explicit; sequential source try with progress; 30 s model-source timeout; assignment_vram_mb for CPU; per-file /v1/model-files/download with manifest and retries. Remaining: live Windows two-machine retest."
+    },
+    {
+      "id": "US-049",
+      "title": "49 — Mainnet USDT cutover: two-wallet pilot checklist",
+      "description": "Operator runbook to move from Solana devnet + mock-USDT to mainnet + real USDT for a minimal pilot: one client wallet (deposits USDT, pays for inference) and one node wallet (receives batched payouts). Treasury holds USDT float and SOL for fees. TAI deferred per ADR-0025.",
+      "acceptanceCriteria": [
+        "Devnet smoke completed: settlement loop pays with --settle-period 60 and mock mint",
+        "python -m pytest tests/test_settlement_loop.py -q passes (includes 24 h / 5 USDT gate tests)",
+        "Mainnet tracker configured: real USDT mint, --starting-credit 0, --devnet-topup 0, --settle-period 86400",
+        "Client wallet deposit credits API key ledger; inference debits balance",
+        "Node wallet receives at least one confirmed mainnet USDT payout batch",
+        "Sub-threshold pending not paid before 24 h; ≥5 USDT pending triggers immediate payout"
+      ],
+      "priority": 49,
+      "status": "open",
+      "notes": "Source issue: docs/issues/49-mainnet-usdt-cutover-two-wallet-pilot.md. ADR-0025 covers optional TAI mint; not blocking this pilot.",
+      "dependsOn": [
+        "US-032",
+        "US-033",
+        "US-039"
+      ]
     }
   ],
   "metadata": {
-    "updatedAt": "2026-07-13T16:15:00.000Z",
+    "updatedAt": "2026-07-13T16:40:00.000Z",
     "statusVocabulary": {
       "open": "Not started",
       "in-design": "Decisions pending before implementation can begin",

packages/tracker/meshnet_tracker/billing.py

@@ -21,6 +21,9 @@ import uuid
 DEFAULT_PRICE_PER_1K_TOKENS = 0.02  # USDT
 DEFAULT_STARTING_CREDIT = 0.0  # USDT; accounts must be funded before inference
 DEFAULT_BILLING_DB_PATH = "billing.sqlite"
+DEFAULT_SETTLE_PERIOD = 86400.0  # seconds — max time between node payouts (24 h prod)
+DEFAULT_PAYOUT_THRESHOLD = 5.0  # USDT — immediate payout when pending exceeds this
+DEFAULT_PAYOUT_DUST_FLOOR = 0.01  # USDT — never pay less than this
 NODE_REVENUE_SHARE = 0.90  # nodes 90% / protocol cut 10% (ADR-0015)
 
 

packages/tracker/meshnet_tracker/cli.py

@@ -8,7 +8,12 @@ import time
 from pathlib import Path
 
 from .accounts import DEFAULT_ACCOUNTS_DB_PATH
-from .billing import DEFAULT_BILLING_DB_PATH
+from .billing import (
+    DEFAULT_BILLING_DB_PATH,
+    DEFAULT_PAYOUT_DUST_FLOOR,
+    DEFAULT_PAYOUT_THRESHOLD,
+    DEFAULT_SETTLE_PERIOD,
+)
 from .capability import ALL_POLICIES as ALL_CAPABILITY_POLICIES
 from .hf_pricing import DEFAULT_HF_PRICING_LOG_DB_PATH
 from .logging_setup import (
@@ -237,19 +242,19 @@ def main() -> None:
     common.add_argument(
         "--settle-period",
         type=float,
-        default=86400.0,
+        default=DEFAULT_SETTLE_PERIOD,
         help="Max seconds between payouts to a node (dev: 60, prod: 86400)",
     )
     common.add_argument(
         "--payout-threshold",
         type=float,
-        default=5.0,
+        default=DEFAULT_PAYOUT_THRESHOLD,
         help="Pending USDT that triggers an immediate payout (dev: 0)",
     )
     common.add_argument(
         "--payout-dust-floor",
         type=float,
-        default=0.01,
+        default=DEFAULT_PAYOUT_DUST_FLOOR,
         help="Never pay out less than this many USDT",
     )
     common.add_argument(

tests/test_settlement_loop.py

@@ -12,7 +12,12 @@ import urllib.request
 import pytest
 
 from meshnet_contracts import LocalSolanaContracts
-from meshnet_tracker.billing import BillingLedger
+from meshnet_tracker.billing import (
+    BillingLedger,
+    DEFAULT_PAYOUT_DUST_FLOOR,
+    DEFAULT_PAYOUT_THRESHOLD,
+    DEFAULT_SETTLE_PERIOD,
+)
 from meshnet_tracker.server import TrackerServer
 
 MODEL = "stub-model"
@@ -172,3 +177,115 @@ def test_non_leader_never_signs():
         assert ledger.get_node_pending("wallet-a") > 0
     finally:
         tracker.stop()
+
+
+# Production defaults — sourced from billing.py (cli.py uses the same constants)
+PROD_SETTLE_PERIOD = DEFAULT_SETTLE_PERIOD
+PROD_PAYOUT_THRESHOLD = DEFAULT_PAYOUT_THRESHOLD
+PROD_DUST_FLOOR = DEFAULT_PAYOUT_DUST_FLOOR
+
+
+def _set_pending_since(ledger: BillingLedger, wallet: str, ts: float) -> None:
+    with ledger._lock:
+        ledger._pending_since[wallet] = ts
+
+
+def test_prod_settlement_constants():
+    "Production settlement policy is 24 h period, 5 USDT threshold, 0.01 dust floor.\n\nTags: billing, settlement"
+    assert DEFAULT_SETTLE_PERIOD == 86400.0
+    assert DEFAULT_PAYOUT_THRESHOLD == 5.0
+    assert DEFAULT_PAYOUT_DUST_FLOOR == 0.01
+
+
+def test_payables_24h_period_not_due_before_elapsed():
+    "Sub-threshold pending is not payable until the 24 h period elapses.\n\nTags: billing, settlement"
+    ledger = BillingLedger(starting_credit=100.0, default_price_per_1k=0.02)
+    ledger.charge_request("client", MODEL, 1000, [("node-wallet", 12)])
+    assert ledger.get_node_pending("node-wallet") == pytest.approx(0.018)
+
+    t0 = 1_700_000_000.0
+    _set_pending_since(ledger, "node-wallet", t0)
+    due_early = ledger.payables(
+        threshold=PROD_PAYOUT_THRESHOLD,
+        max_period=PROD_SETTLE_PERIOD,
+        dust_floor=PROD_DUST_FLOOR,
+        now=t0 + PROD_SETTLE_PERIOD - 1.0,
+    )
+    assert due_early == []
+
+
+def test_payables_24h_period_triggers_at_boundary():
+    "Sub-threshold pending becomes payable exactly after the 24 h period.\n\nTags: billing, settlement"
+    ledger = BillingLedger(starting_credit=100.0, default_price_per_1k=0.02)
+    ledger.charge_request("client", MODEL, 1000, [("node-wallet", 12)])
+    pending = ledger.get_node_pending("node-wallet")
+
+    t0 = 1_700_000_000.0
+    _set_pending_since(ledger, "node-wallet", t0)
+    due = ledger.payables(
+        threshold=PROD_PAYOUT_THRESHOLD,
+        max_period=PROD_SETTLE_PERIOD,
+        dust_floor=PROD_DUST_FLOOR,
+        now=t0 + PROD_SETTLE_PERIOD,
+    )
+    assert due == [("node-wallet", pytest.approx(pending))]
+
+
+def test_payables_threshold_triggers_before_24h_period():
+    "Pending ≥ 5 USDT pays immediately without waiting the 24 h period.\n\nTags: billing, settlement"
+    ledger = BillingLedger(starting_credit=1000.0, default_price_per_1k=0.02)
+    # cost = 300k * 0.02 / 1k = 6.0 USDT → node share 5.4 USDT
+    ledger.charge_request("client", MODEL, 300_000, [("node-wallet", 12)])
+    assert ledger.get_node_pending("node-wallet") >= PROD_PAYOUT_THRESHOLD
+
+    due = ledger.payables(
+        threshold=PROD_PAYOUT_THRESHOLD,
+        max_period=PROD_SETTLE_PERIOD,
+        dust_floor=PROD_DUST_FLOOR,
+        now=time.time(),
+    )
+    assert len(due) == 1
+    assert due[0][0] == "node-wallet"
+
+
+def test_prod_defaults_hold_sub_threshold_pending():
+    "Tracker with prod 24 h / 5 USDT settings does not pay tiny balances early.\n\nTags: billing, settlement"
+    ledger = BillingLedger(starting_credit=100.0, default_price_per_1k=0.02)
+    ledger.charge_request("client", MODEL, 1000, [("node-wallet", 12)])
+    treasury = _FakePayoutTreasury()
+    tracker = _make_tracker(
+        ledger,
+        treasury,
+        threshold=PROD_PAYOUT_THRESHOLD,
+        period=PROD_SETTLE_PERIOD,
+        dust=PROD_DUST_FLOOR,
+    )
+    tracker.start()
+    try:
+        time.sleep(0.5)
+        assert treasury.batches == []
+        assert ledger.get_node_pending("node-wallet") > 0
+    finally:
+        tracker.stop()
+
+
+def test_prod_threshold_triggers_immediate_payout():
+    "Tracker with prod 24 h period still pays when pending ≥ 5 USDT.\n\nTags: billing, settlement"
+    ledger = BillingLedger(starting_credit=1000.0, default_price_per_1k=0.02)
+    ledger.charge_request("client", MODEL, 300_000, [("node-wallet", 12)])
+    treasury = _FakePayoutTreasury()
+    tracker = _make_tracker(
+        ledger,
+        treasury,
+        threshold=PROD_PAYOUT_THRESHOLD,
+        period=PROD_SETTLE_PERIOD,
+        dust=PROD_DUST_FLOOR,
+    )
+    tracker.start()
+    try:
+        assert _wait_for(lambda: treasury.batches)
+        assert ledger.get_node_pending("node-wallet") == pytest.approx(0.0)
+        assert treasury.batches[0][0][0] == "node-wallet"
+        assert treasury.batches[0][0][1] >= PROD_PAYOUT_THRESHOLD
+    finally:
+        tracker.stop()