CCC Direct Swap Server

From the Carbon Credit Coin Development Lab Team

Date Range: December 15, 2024 – September 15, 2025
Document Version: 1.0 (Prepared for technical partners and prospective investors)

Carbon Credit Coin

Confidentiality Notice

This report contains proprietary know-how, system designs, and operating procedures owned by Carbon Credit Coin (CCC). Do not distribute without written permission.

Executive Summary

Overview. The CCC Direct Swap Server Development Project is a nine-month R&D program that designed, implemented, and production-hardened a commission-free, allow-listed swap server for Carbon Credit Coin (CCC) on BNB Smart Chain (BSC). The objective is to deliver secure, fast, and transparent CCC swaps that protect users from common DEX pitfalls (malicious tokens, predatory routing, opaque fees) and pave the way for fintech-grade payment integrations.

Investment & effort. Over 2,500+ engineering hours were invested between Dec 15, 2024 and Sep 15, 2025. Engineering cost basis was USD $120/hour. Direct program costs also covered infrastructure (Linode), premium BSC RPC access (Chainstack), security testing and compliance consulting, and toolchain licenses.

  • Core components shipped: forward swap service (swap_ccc), reverse swap service (reverse_swap_ccc), API + logging service (api), hardened Nginx ingress, and MySQL persistence with structured telemetry.
  • Routing & quotes: deterministic pathing through curated pools (CCC/WBNB, CCC/USDT, allow-listed majors) with slippage controls, liquidity probing, and graceful fallback behavior.
  • Security & resilience: CSP, strict CORS allowlist, server-side schema validation, RPC fallback mesh, exponential back-off retry logic, idempotent logging, and comprehensive health/metrics endpoints.
  • Reliability (user-visible): Quote p95 < 220 ms, swap-build p95 < 280 ms (steady state); 99.95% monthly API uptime under PM2 supervision.
  • Demonstrated on-chain activity: example transactions include 0x34deb59e0e2d0d8273ef8455231b6eb78be325c071145bf2c5cb34e7ebb2bbac and 0xf2e170d179c147dae2338ecbbfa8181db464a899b758525cdfe04b20fcecf019.

Competitive advantage. Unlike generalized DEX frontends, CCC’s swap server is commission-free, allow-listed, and purpose-built for carbon assets. This reduces attack surface (malicious tokens/routes), shrinks user cognitive load, and aligns UX with climate-finance outcomes. The resulting IP—covering deterministic routing, liquidity-aware safety rails, and enterprise-grade observability—positions CCC ahead of competitors who rely on fee-extractive or ad-hoc swapping models.

Commercialization path. The same core can power a crypto payment gateway (e.g., WooCommerce/Shopify plugin) in which merchants accept crypto at checkout while CCC settles them in fiat (via partner rails). A 2% service fee is modeled for gateway transactions, with white-label licensing potential for climate-aligned brands.

Valuation (IP). Using a blended approach—cost to reproduce (2,500+ hours @ $120/hr), discounted cash flow for the payment gateway line, and comparable multiples for fintech routing layers—the current IP value is estimated at USD $2.5–$3.0 million, with upside as multi-token gateway and merchant plugins reach general availability.

Table of Contents

  1. Project Charter & Objectives
  2. Team, Roles & Operating Rhythm
  3. Systems Overview & Reference Architecture
  4. Technology Stack & Environments
  5. Security, Compliance & Risk Controls
  6. Chronological Development Log (Dec 2024 → Sep 2025)
  7. Technical Milestones & Breakthroughs
  8. Performance, Scalability & Reliability
  9. Data Model, Schemas & Auditability
  10. API Surface & Protocols
  11. DevOps, Observability & Runbooks
  12. Quality Engineering & Test Evidence
  13. Competitive Landscape & Differentiation
  14. Commercialization: Payment Gateway & Plugins
  15. Financial Model, Unit Economics & IP Valuation
  16. Governance, Documentation & Knowledge Transfer
  17. Roadmap (Q4 2025 – Q2 2026)
  18. Conclusions
  19. Appendices (Addresses, Configs, Snippets, Runbooks, Glossary)

1) Project Charter & Objectives

Goal. Deliver a direct, commission-free swap server for CCC that:

  • Supports CCC ↔ BNB/USDT/USDC at launch and scales to allow-listed majors.
  • Minimizes user risk via a token allowlist and deterministic routing.
  • Offers enterprise-grade APIs for integration (web, WordPress, merchant plugins).
  • Enables transparent logging, audit traces, and provable correctness.
  • Serves as the foundation for a crypto payment gateway line of business.

Non-goals. No custody of user keys/funds; no speculative MEV; no unsupported chain bridges in v1.

Success criteria. 99.95% uptime; median quote < 150 ms; clean security review; positive partner feedback.

2) Team, Roles & Operating Rhythm

Roles engaged. Software Engineers, Blockchain Architects, Data/DB Engineers, Security Analysts, Site Reliability Engineering, and Financial Modelers.

Cadence. Weekly engineering reviews; bi-weekly security sessions; monthly stakeholder demos. Git-based branching with CI gates (lint, unit tests, dependency audits).

3) Systems Overview & Reference Architecture

  • Core services (stateless): swap_ccc (forward path builder), reverse_swap_ccc (CCC → base assets), api (REST façade for quotes, swap-build, tokens, health/metrics, logging).
  • Ingress & security: Nginx TLS termination, rate-limits, strict headers; CORS allowlist to CCC domains; bot filtering.
  • Data tier: MySQL (transaction logs, audit trails, risk signals); optional Redis (quoting cache, rate limiting).
  • Chain connectivity: Primary RPC: Chainstack BSC; alternate RPC fallbacks with circuit-breaker.
  • Observability: /api/health; /api/metrics (Prometheus style); JSON logs with correlation ids.

4) Technology Stack & Environments

  • Node.js 18.x, Express, ethers.js
  • Nginx 1.24.x, Certbot (Let’s Encrypt)
  • MySQL (InnoDB; utf8mb4); mysql2 client; bash runbooks
  • PM2 process manager (cluster mode)
  • Ubuntu on Linode (baseline 4GB/2vCPU; mid-project scaling applied)
  • Third-party: Chainstack BSC RPC; CoinGecko reference rates

5) Security, Compliance & Risk Controls

  • Schema validation: server-side checks on all POST bodies; canonical error codes.
  • CORS/CSP: strict origins; CSP to prevent script injection on hosted UIs.
  • Secrets hygiene: environment variables with least privilege; no secrets in repo.
  • Transaction integrity: canonical tx hash format; idempotent logging; duplicate-safe writes.
  • Rate limiting: per-IP and per-wallet quoters; burst caps.
  • Threat model: spoofed tokens, path poisoning, RPC replay, timing attacks; compensating controls documented.
  • Compliance posture: non-custodial routing; fiat settlement handled via partners in gateway phase.

6) Chronological Development Log (Dec 2024 → Sep 2025)

Month 1: Dec 15, 2024 – Jan 15, 2025 — Foundations

  • Objectives: Define non-custodial design; stand up baseline infra; draft API surface.
  • Actions: Provision Linode; harden host; install Node/Nginx/MySQL; initialize empty schemas; draft /quote, /build-swap, /log-swap, /health.
  • Obstacle & solution: Module version skew → pinned lockfile and engines guard.
  • Outcome: “Hello-chain” prototype returning live BSC blockheight; green CI.

Month 2: Jan 16 – Feb 15 — Wallet Connect & DB Schema

  • Objectives: Solidify wallet UX and persistence.
  • Actions: Front-end gating on eth_requestAccounts success + chainId === 56; DB schema v1 (ccc_swap_transactions and ccc_reverse_swap_transactions with status transitions).
  • Issue resolved: Early “connected” false-positive; deterministic UI gating implemented.
  • Outcome: Swap UX gated correctly; first reliable DB writes.

Month 3: Feb 16 – Mar 15 — RPC Fallbacks & SSL

  • Objectives: Resilient connectivity and encryption.
  • Actions: Primary Chainstack + alternates with round-robin failover; TLS issuance; strict cipher suite.
  • Outcome: ~95% reduction in connectivity-related user errors; A-grade TLS.

Month 4: Mar 16 – Apr 15 — Logging & Observability

  • Objectives: Production-grade introspection.
  • Actions: Structured JSON logs; correlation ids; /api/metrics for Prometheus; dashboards for RPS/error%/latency.
  • Outcome: p50 quote ≈ 120 ms; p95 ≈ 210 ms; proactive alerting wired.

Month 5: Apr 16 – May 15 — Retry, Back-pressure & UX Hardening

  • Objectives: Reduce flakiness; improve UX messages.
  • Actions: Exponential back-off for read-only calls; idempotent log writes; canonical 422 for invalid tx hashes; liquidity probe with human-friendly reasons.
  • Outcome: >90% of transient RPC errors absorbed; actionable UX replaces generic failures.

Month 6: May 16 – Jun 15 — Reverse Swap & Security Sweep

  • Objectives: Close the loop (CCC → base assets) and deepen security.
  • Actions: Implemented reverse_swap_ccc; CORS allowlist tightened; CSRF tokens and nonces for WP forms.
  • Outcome: Clean security review (no criticals); reverse swaps reliable.

Month 7: Jun 16 – Jul 15 — Scale & Subdomain Isolation

  • Objectives: Isolation and performance.
  • Actions: Subdomain isolation; hardened Nginx rules; PM2 cluster; log rotation; DB index tuning.
  • Outcome: Stable >200 RPS quoting in soak tests; lower P95 due to indexes.

Month 8: Jul 16 – Aug 15 — Multi-Token Routing & Payment Gateway POC

  • Objectives: Support allow-listed majors; pilot merchant gateway flow.
  • Actions: Allow-listed tokens (BSC/56): WBNB/BNB, USDT, USDC, BTCB, ETH, XRP, ADA, DOGE, DOT, AVAX, LINK, CAKE, TWT. Deterministic routes via preferred intermediaries (WBNB/USDT/USDC), max 2 hops. Payment gateway POC with price-lock windows and proof-of-payment capture.
  • Outcome: Seamless quotes across majors; merchant demo of crypto checkout → fiat settlement (partner rails) with a modeled 2% fee.

Month 9: Aug 16 – Sep 15 — Production Hardening & Demo Readiness

  • Objectives: Finalize, measure, and prepare demonstrations.
  • Actions: Latency audits; 24-hour soak; chaos drills (RPC cycling). Demo transactions recorded (e.g., 0x34deb59e..., 0xf2e170d1...).
  • Outcome: Public demo completed; telemetry clean; incident-free.

7) Technical Milestones & Breakthroughs

  • RPC fallback mesh: automated endpoint selection cut downtime ~95%.
  • Idempotent, schema-validated logging: removed noisy 400s; improved forensics.
  • Deterministic routing with safety rails: allow-list + hop cap prevents long-path risk and scam tokens while keeping execution competitive.
  • Observability fabric: metrics + structured logs shortened detection and recovery times during drills.
  • Merchant gateway POC: clean separation of checkout, routing, and settlement for future monetization.

8) Performance, Scalability & Reliability

  • Latency (steady state): Quotes p50 ≈ 120 ms, p95 ≈ 210–220 ms; Swap-build p50 ≈ 160 ms, p95 ≈ 270–280 ms.
  • Throughput: 200–300 RPS quoting sustained with <1% error during induced RPC churn.
  • Availability: 99.95% monthly API uptime; PM2 cluster with graceful reloads.
  • Scale levers: horizontal API scale, MySQL read replica, optional Redis for hot pairs.

9) Data Model, Schemas & Auditability

Core tables (simplified)

ccc_swap_transactions: id (PK), created_at, wallet_hash, from_symbol, to_symbol, path, amount_in_wei, amount_out_wei, slippage_bps, price_impact_bps, tx_hash (unique), status

ccc_reverse_swap_transactions:
parallel schema with direction semantics

risk_events:
id (PK), created_at, event_type, detail(JSON)

Audit practices: deterministic status transitions, timestamps, request/response correlation ids, PII-light by design.

10) API Surface & Protocols

  • GET /api/health → { ok, uptime, node, ts }
  • GET /api/tokens → allow-list with decimals (hydrated at runtime)
  • POST /api/quote → { route, amountOutWei, minAmountOutWei, slippageBps, priceImpactBps }
  • POST /api/build-swap → unsigned tx envelope { to, data, value, deadline }
  • POST /api/log-swap → idempotent logging; 422 on invalid tx hash

Semantics: JSON throughout; canonical error codes; non-custodial (client signs/broadcasts).

11) DevOps, Observability & Runbooks

  • PM2: processes api, swap_ccc, reverse_swap_ccc (cluster).
  • Nginx: TLS 1.2+; gzip JSON; caching for /tokens.
  • Backups: nightly MySQL dumps; 30-day retention; tested restores.
  • Logs: rotated; shipped centrally; PII-light.

Daily checks: PM2 health; /api/health; latency/error dashboards; backup checksum.

Weekly checks: dependency audits; DB index stats; RPC failover drill.

12) Quality Engineering & Test Evidence

  • Unit tests: routing planner, slippage guards, schema validation.
  • Integration: live RPC quotes across allow-listed tokens.
  • Chaos drills: RPC de-preferencing, latency spikes, forced timeouts.
  • Pen tests (targeted): input fuzzing, CORS/CSP bypass attempts, log forgery attempts.
  • Results: no criticals; highs remediated; residual risks tracked with compensating controls.

13) Competitive Landscape & Differentiation

  • Generalized DEX frontends: broad access but high cognitive load, fee extraction, exposure to malicious routes.
  • Centralized processors: custodial risk; compliance overhead; regional constraints.
  • CCC differentiation: commission-free routing optimized for CCC and allow-listed majors; deterministic paths; enterprise-grade observability; climate-aligned utility.

14) Commercialization: Payment Gateway & Plugins (Spin-offs)

Concept. Merchant crypto acceptance powered by the swap server. Merchants accept crypto; CCC routes via allow-listed assets; settlement to fiat via partner rails. Components:

  • WooCommerce plugin (WordPress) and Shopify app (phase 2)
  • Checkout widget with price-lock windows (e.g., 5–10 minutes)
  • Merchant dashboard for invoices, payouts, reconciliation, statements
  • Fee model: 2% service fee; volume-tiered discounts at scale

Why CCC wins: reduced fraud via allow-list, reduced volatility by immediate settlement, and heavy reuse of existing swap logic (time-to-market advantage).

15) Financial Model, Unit Economics & IP Valuation

Cost to reproduce (lower bound):

  • Engineering effort: 2,500+ hours × $120/hr ≈ $300,000
  • Infrastructure, security, consulting, tooling (program period): $200,000–$300,000 (range reflects environment tiers and external reviews)

Gateway revenue (illustrative):

  • Year 1 pilot: 250 merchants × $20,000/month GTV = $5M/yr → $100k revenue @ 2%
  • Year 2 expansion: 1,000 merchants × $30,000/month = $360M/yr → $7.2M revenue @ 2%

Valuation triangulation: cost approach ($300k+), income approach (DCF), market comps (routing/checkout SDKs) → blended $2.5M–$3.0M with upside on merchant GA.

16) Governance, Documentation & Knowledge Transfer

  • Architecture docs, runbooks, threat model, and API specs maintained in repository wiki.
  • Onboarding guides for engineers and partners.
  • Versioned change logs with rollback procedures.

17) Roadmap (Q4 2025 – Q2 2026)

  • Q4 2025: WooCommerce plugin GA; enhanced price-impact estimator; merchant sandbox.
  • Q1 2026: Shopify app beta; automated invoicing & payout reconciliation; availability target 99.97%.
  • Q2 2026: White-label offering; reseller program; risk scoring v2 with behavioral heuristics.

18) Conclusions

The CCC Direct Swap Server is a purpose-built, production-hardened routing layer enabling safe, fast, and commission-free swaps for CCC and major BEP-20 tokens. Deterministic routing, allow-listing, and an observability-first design directly address the pitfalls of generalized DEX experiences—delivering a user journey and risk posture appropriate for both retail users and enterprise merchants.

This investment created defensible IP with immediate commercialization paths (payment gateway plugins) and strategic relevance to climate finance. CCC’s swap technology leads on safety-by-design and readiness for partner integrations—positioning the project for investor scale-up.

19) Appendices

Appendix A — Key Addresses & Identifiers

  • CCC Token (BSC/56): 0x9DfBb97B47854B0Ed19E064DA9B405c4Cd754EC9
  • Allow-listed Majors (BSC/56):
    • WBNB/BNB: 0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c
    • USDT: 0x55d398326f99059ff775485246999027b3197955
    • USDC: 0x8ac76a51cc950d9822d68b83fe1ad97b32cd580d
    • BTCB: 0x7130d2a12b9bcbfae4f2634d864a1ee1ce3ead9c
    • ETH: 0x2170ed0880ac9a755fd29b2688956bd959f933f8
    • XRP: 0x1d2f0da169ceb9fc7b3144628db156f3f6c60dbe
    • ADA: 0x3ee2200efb3400fabb9aacf31297cbdd1d435d47
    • DOGE: 0xba2ae424d960c26247dd6c32edc70b295c744c43
    • DOT: 0x7083609fce4d1d8dc0c979aab8c869ea2c873402
    • AVAX: 0x96412902aa9dce33c6ccf94e9f781a204a4a2ee7
    • LINK: 0xf8a0bf9cf54bb92f17374d9e9a321e6a111a51bd
    • CAKE: 0x0e09fabb73bd3ade0a17ecc321fd13a19e81ce82
    • TWT: 0x4b0f1812e5df2a09796481ff14017e6005508003

Appendix B — API Spec (Selected)

GET /api/tokens → chainId, symbols, addresses, decimals.

POST /api/quote → { route, amountOutWei, minAmountOutWei, slippageBps, priceImpactBps }

POST /api/build-swap → unsigned tx envelope { to, data, value, deadline }

POST /api/log-swap → idempotent; 422 when txHash fails canonical regex.

Appendix C — Data Schemas (Simplified)

CREATE TABLE ccc_swap_transactions ( id BIGINT AUTO_INCREMENT PRIMARY KEY, created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP, wallet_hash CHAR(64) NOT NULL, from_symbol VARCHAR(16) NOT NULL, to_symbol VARCHAR(16) NOT NULL, path VARCHAR(256) NOT NULL, amount_in_wei DECIMAL(78,0) NOT NULL, amount_out_wei DECIMAL(78,0), slippage_bps INT NOT NULL, price_impact_bps INT, tx_hash CHAR(66) UNIQUE, status ENUM('pending','submitted','confirmed','failed') NOT NULL ) ENGINE=InnoDB;

CREATE TABLE ccc_reverse_swap_transactions ( ... );
CREATE TABLE risk_events ( id BIGINT AUTO_INCREMENT PRIMARY KEY, created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP, event_type VARCHAR(32), detail JSON );

Appendix D — Selected Code Patterns (Illustrative)

// Health endpoint app.get('/api/health', (req,res) => res.json({ ok:true, service:'ccc-api', uptime:process.uptime(), node:process.version, ts:Date.now() }) );

// Strict txHash validation
if (!/^0x[0-9a-fA-F]{64}$/.test(txHash)) {
return res.status(422).json({ ok:false, error:'invalid_txHash' });
}

// Min-out calc from slippage (wei)
function minOut(amountOutWei, slippageBps) {
return (amountOutWei * BigInt(10000 - slippageBps)) / 10000n;
}

Appendix E — Runbooks (Abridged)

Daily: PM2 health; /api/health; latency/error dashboards; backup checksum.

Weekly: dependency audit; DB index stats; RPC failover drill.

Monthly: allow-list review; threat model delta; performance regression check.

Appendix F — Incident Post-Mortems (Sample)

Symptom: UI showed “Wallet Connected” before MetaMask prompt.
Root cause: State set on provider presence, not eth_requestAccounts resolution.
Fix: Gate on successful eth_requestAccounts + chainId === 56; disable UI until both pass.

Symptom: Repeated HTTP 400 to /api/log-swap.
Root cause: Unvalidated tx hashes and race on duplicate submissions.
Fix: Regex validation + unique index; return 200 on duplicate for idempotence.

Appendix G — Roadmap Gantt (ASCII)

Dec '24 |■■ Foundations ■■| Jan '25 |■■ Wallet & Schema ■■| Feb '25 |■■ RPC Fallbacks ■■| Mar '25 |■■ Observability ■■■| Apr '25 |■■ Retry & UX ■■| May '25 |■■ Reverse Swap & Security ■■| Jun '25 |■■ Scale & Isolation ■■■| Jul '25 |■■ Multi-Token Routing ■■■| Aug '25 |■■ Payment Gateway PoC ■■| Sep '25 |■■ Prod Hardening & Demo ■■| Q4 '25 |■■ WooCommerce GA ■■| Q1 '26 |■■ Shopify Beta ■■| Q2 '26 |■■ White-Label & Risk v2 ■■|

Appendix H — Glossary

  • Allow-list: approved set of tokens/routes to reduce attack surface.
  • Slippage (bps): basis points buffer to absorb price movement between quote and execution.
  • Deterministic routing: fixed intermediaries (e.g., WBNB/USDT/USDC) with a capped hop count.
  • Idempotent logging: safe to re-submit the same tx record without duplicate side-effects.

Investor Perspective: Why This IP Matters

  • Defensible moat: safety-by-design routing and operational excellence are hard to replicate without sustained engineering and disciplined operations.
  • Immediate monetization: merchant gateway with 2% fee, white-label licensing, enterprise integrations.
  • Strategic fit: reliable crypto rails aligned to climate finance; portable stack with natural upsells (analytics, invoicing, risk scoring).

Prepared by:
Carbon Credit Coin Development Lab Team
Engineering • Blockchain Architecture • Security • Data • SRE • Finance

Contact: labs@carboncreditcoin.net (partner due diligence and technical onboarding)

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