Wallets, Custody, Nodes, Payments & Compliance — Engineered, Secure, and Proven
“Crypto” only works for the business when keys are safe, transactions are reliable, policies are enforced, and evidence is easy to produce.
SolveForce treats cryptocurrency like any other mission-critical system: secure key custody, wallet & policy orchestration, node/RPC reliability, payments/on-ramp/off-ramp workflow, smart-contract safety, and compliance—all wrapped in Zero-Trust access and SIEM/SOAR evidence so operations are auditable every day.
Related pages
• Ledgers & apps → /blockchain • Cloud/Edge → /cloud • DC/Interconnect → /wavelength
• Keys & Vaults → /key-management • Secrets → /secrets-management • Boundary → /waf
• Zero-Trust → /ztna • Evidence → /siem-soar • DR/Backups → /backup-immutability
• Governance → /grc • Security Program → /cybersecurity
🎯 Outcomes We Optimize
- Key safety above all — HSM/MPC custody with policy gates; no single human can lose the treasury.
- Operational clarity — wallet policies, spend limits, velocity controls, whitelists, and approvals that work under pressure.
- Reliable transactions — low RPC latency, confirmation/finality guarantees, fee policy, and reorg tolerance you can measure.
- Payments you can run — invoicing, stablecoins, payouts, and reconciliation that match your books.
- Compliance without chaos — KYC/AML screening, Travel-Rule integrations, audit logs, sanctions filters, and exportable evidence.
We do not provide investment advice. We engineer infrastructure, controls, and operations.
🧭 Reference Architecture (enterprise crypto stack)
1) Custody & Wallet Orchestration
- HSM or MPC for key custody (FIPS-validated HSMs or reputable MPC).
- Wallet policies: M-of-N approvals, role-based limits, address allow/deny lists, daily spend ceilings, time-lock windows.
- Hot/Warm/Cold tiers with automated sweeping and emergency pause.
2) Nodes, RPC & Indexing
- Self-hosted validator/full nodes (where required) and/or managed RPC providers with multi-region failover.
- Chain ETL to warehouse + vector index of contract ABIs, policies, and runbooks for fast search & RAG.
→ /data-warehouse • /vector-databases
3) Payments, On-/Off-Ramps & Treasury
- Stablecoin rails (e.g., USDC) for B2B/B2C; invoice → address/QR → monitoring → auto-credit via oracles & confirmations.
- On/off-ramps & exchanges integrated with KYC/AML, Travel-Rule providers, and accounting systems.
- FX & price oracles with medianization and circuit-breakers.
4) Smart Contracts (optional)
- Contract templates with pause/upgrade keys under PAM JIT; audits/formal checks where warranted; allow-listed methods for automation.
→ /pam • /blockchain
5) Security & Zero-Trust
- ZTNA for consoles and signers; SIEM detections for unusual spend/velocity; WAF/Bot for public APIs; email auth (DMARC) for payment comms.
→ /ztna • /waf • /email-auth
6) Observability, Evidence & DR
- Every tx, approval, key event, RPC call, oracle feed, and change diff → /siem-soar.
- Immutable backups of policies, wallet metadata, and index DBs; DR runbooks with screenshots & checksums.
→ /backup-immutability
📦 Wallet & Custody Options (choose your posture)
| Tier | Where Keys Live | Typical Use | Pros | Trade-offs |
|---|---|---|---|---|
| Hot | HSM/MPLS-protected or MPC with online signers | Commerce, payouts | Instant ops; policy-gated | Higher exposure; needs tight limits |
| Warm | HSM/MPC online but restricted | Ops treasury | Good balance; scheduled batches | Slight latency for approvals |
| Cold | HSM offline / air-gapped (or MPC with offline cosigners) | Long-term reserves | Max safety | Manual logistics; slower RTO |
Baseline controls: multi-person approvals, address allow-lists, spend/velocity caps, session timeouts, emergency freeze, attested signer hosts, PAM JIT for escalations.
💸 Payments & Treasury (stablecoins included)
- Invoicing & settlement: generate invoice (amount, chain, asset, address/QR); watch mempool; credit on N confirmations; post to ERP.
- Payouts & payroll: bulk templates with on-chain proofs; Travel-Rule & sanctions checks upstream; webhook to receipients.
- Stablecoins: reduce volatility; segregate hot/warm addresses; daily sweep to policy vault.
- Reconciliation: chain ETL → accounting; tag costs (gas, spreads, fees) and counterparties for audit.
🛡️ Risk & Countermeasures (what we defend)
| Risk | Countermeasure |
|---|---|
| Key compromise | HSM/MPC; allow-lists; spend caps; emergency pause; attested signers; JIT approvals |
| Smart-contract bugs | Audits, formal checks, pause keys; small caps; upgrade with time-lock & quorum |
| Oracle manipulation | Multiple sources; signed payloads; medianization; bounded deltas & circuit-breakers |
| Bridge/L2 risk | Canonical bridges or proven rollups; TVL limits; exit/escape hatches |
| RPC outage/reorgs | Multi-provider RPC; reorg-aware confirmation policy; backlog drain; SLAs |
| Sanctions/AML | Screening, Travel-Rule integration, risk scoring, deny-lists; periodic re-screen |
| Phishing/BEC | DMARC/BIMI; ZTNA; step-up auth for payouts; signer host isolation; dual-channel approvals |
📐 SLO Guardrails (crypto you can measure)
| Domain | KPI / SLO (p95 unless noted) | Target |
|---|---|---|
| RPC read latency | Regional | ≤ 100–300 ms |
| Tx inclusion time | Mempool → block | ≤ 1–2 blocks (chain-dependent) |
| Finality | Confirms to spend | ≤ 2–12 blocks or protocol finality < 2–5 min |
| Reorg tolerance | Max tolerated depth | ≤ 1–2 blocks (alert >2) |
| Custody | HSM/MPC uptime | ≥ 99.99% |
| Policy | Approval→signature SLA | ≤ 1–5 min (warm), ≤ 15–30 min (cold) |
| Screening | AML/Travel-Rule coverage | = 100% of in-scope flows |
| Evidence | Logs/events → SIEM | ≤ 60–120 s |
| DR | Wallet policy restore | ≤ 60–120 min (documented) |
| Change | Unapproved prod changes | = 0 (policy gates) |
When a guardrail trips, SOAR auto-opens a case and can: pause wallets, switch RPCs, raise confirms, revoke signers, rotate keys, throttle rules, or roll back releases—attaching artifacts.
🧪 Acceptance Tests & Artifacts (we keep the receipts)
- Key ceremonies: HSM/MPC setup, quorum, shards/roles, recovery drills; videos & signed attestations.
- Policy: allow-list tests, spend/velocity limits, emergency freeze rehearsal.
- RPC/Reliability: latency & inclusion tests; multi-provider failover; reorg simulation.
- Payments: invoice → confirm → credit path; Travel-Rule → exchange handoff; reconciliation exports.
- Smart contracts: unit/property tests, audit reports, pause/upgrade tests; deploy tx hashes.
- Compliance: KYC/AML logs, sanctions screens, address risk scores; retention & access logs.
- DR: wallet policy restore, cold→warm promotion, ETL rebuild with checksums; timing captured.
All artifacts stream to /siem-soar and roll into QBR/audit packs.
🔢 Chain & Wallet Planning (quick tables)
A) Chains & Typical Uses (illustrative)
| Chain Type | Example Uses | Notes |
|---|---|---|
| Bitcoin (L1) | Treasury, durable settlement | Longer finality, fewer moving parts |
| Ethereum (L1) | Stablecoins, DeFi, NFT, L2 anchor | Smart-contract rich; watch gas & MEV |
| L2 Rollups (OP/ZK) | Low-fee apps, payroll, commerce | Set confirmation policy vs bridge risk |
| Permissioned | B2B networks, compliance | Governance matters; anchor proofs to public |
B) Wallet Tiers (operational)
| Tier | Typical Balance | Approvals | Rotation Cadence |
|---|---|---|---|
| Hot | Minimal | 2–of–N + policy | 30–90 d signer refresh |
| Warm | Medium | 3–of–N + time-lock | 90–180 d |
| Cold | Large | 4–of–N + ceremony | 180–365 d (exercise recovery, not just rotate) |
🔒 Compliance Overlays (sector-ready)
- KYC/AML & Sanctions — Travel-Rule, OFAC/EU screening, recordkeeping, suspicious activity workflows.
- SOC 2 / ISO 27001 — access/change/logging; evidence packs for auditors.
- PCI DSS — for fiat card rails intertwined with crypto front ends (WAF, tokenization, key ceremonies). → /pci-dss
- HIPAA — if PHI touches blockchain-adjacent workflows (labels, minimum necessary, immutable logs). → /hipaa
- NIST/CMMC / FedRAMP-adjacent — if public sector is involved; map AC/IA/AU/SC/CM controls. → /nist
🧱 Best Practices (field-tested)
- Prefer HSM/MPC + policy orchestration; never plain hot keys in app servers.
- Treat oracles and bridges like external dependencies—limit exposure, add circuit-breakers, and stage releases.
- Use stablecoins for operations; separate hot vs warm addresses; sweep daily.
- Tag everything (policy, purpose, counterparty) in ETL for reconciliation and audits.
- Run quarterly DR: key recovery, RPC provider failover, policy restore; keep artifacts.
- DMARC to p=reject to prevent invoice/addr spoofing; step-up auth for payout emails.
- Publish a runbook for incident classes (key suspicion, bad contract, RPC outage, sanctions hit).
📝 Cryptocurrency Intake (copy-paste & fill)
- Use-cases (treasury, payouts, invoicing, stablecoins, DeFi interaction, NFTs, contracts) & KPIs
- Assets & chains (BTC, ETH, stablecoins, L2s; permissioned networks?)
- Custody (HSM vs MPC; hot/warm/cold tiers; approvals; limits; allow-lists)
- Nodes/RPC (self-hosted vs provider; latency targets; regions; reorg policy)
- Payments (invoice flow, confirmations, reconciliation; Travel-Rule & AML)
- Smart contracts (needed? audits? pause/upgrade roles?)
- Security (ZTNA/PAM, WAF, email auth, vault/KMS, screening)
- Observability (SIEM destination, dashboards, alerting; ETL cadence)
- Continuity (backup/immutability, policy restore, DR drills)
- Compliance (KYC/AML/Travel-Rule, SOC2/ISO/NIST/HIPAA/PCI), artifact retention
- Operations (managed vs co-managed, change windows, escalation)
- Timeline & budget, success metrics (latency, inclusion/finality, failures, audit readiness)
We’ll return a design-to-operate plan with custody choices, RPC architecture, payments & compliance wiring, SLO-mapped pricing, and an evidence plan you can reuse in audits and QBRs.
📞 Run Crypto as a System—Securely, Reliably, and With Proof
- Call: (888) 765-8301
- Email: contact@solveforce.com
From keys and wallets to nodes and payments, from smart contracts to compliance evidence, we’ll make cryptocurrency operable, auditable, and safe.