Drone Swarm Demo (No Full Nodes)
A swarm of drones coordinating missions without any full node.
→ No global state
→ No full nodes
→ Real-time consensus via DAG
"What if a blockchain didn't need full nodes?"
Bitcoin, Ethereum, Solana — every blockchain shares one premise:
Someone, somewhere, must store the entire ledger.
Full nodes. Archive nodes. Validators holding the entire state. Removing them was considered impossible — without them, transactions can't be verified, double-spends can't be detected, consensus breaks down.
We removed them. It still works.
CDML (Cross-Density Mutual Surveillance Ledger) is a DAG-based distributed ledger that operates without full nodes, archive nodes, or global consensus.
Instead of one entity holding everything, the sum of cross-validation records between nodes forms a distributed full node.
Every time two nodes exchange state hashes (a "cross"), a mutual surveillance record is created. An attacker attempting to forge past records must simultaneously modify cross records spanning hundreds of unrelated nodes.
Being DAG-based, CDML supports parallel transaction processing, enabling high TPS scalability that traditional block-structured chains cannot achieve.
Traditional Blockchain: CDML:
┌─────────────────┐ A ←→ B ←→ C
│ Full Node │ ↕ ↕
│ (stores all) │ D ←→ E ←→ F
└─────────────────┘ ↕ ↕
Single point G ←→ H ←→ I
of failure
Every cross = a witness.
Sum of crosses = distributed full node.
| Property | Bitcoin / Ethereum | CDML |
|---|---|---|
| Full node required | ✅ Required | ❌ Not required |
| Archive node required | ✅ Required | ❌ Not required |
| Global consensus | ✅ Required | ❌ Not required |
| Storage per node | Entire chain | Cross history only |
| Confirmation time | 10 min ~ 2 sec | ~1–1.5 seconds |
| Storage growth | Linear, permanent | Compressed per cross |
| TPS scalability | Limited by block structure | Scalable via DAG parallel processing |
┌─────────────────────────────────────────────────┐
│ API Layer │
│ REST Endpoints (balance, tx, status) │
├─────────────────────────────────────────────────┤
│ Protocol Layer │
│ TxProcessor │ DAGManager │ WitnessManager │
├─────────────────────────────────────────────────┤
│ Crypto Layer │
│ Ed25519 │ Blake2b-256 │
├─────────────────────────────────────────────────┤
│ Storage Layer │
│ BadgerDB │ ChainStore │ CrossStore │
├─────────────────────────────────────────────────┤
│ Network Layer │
│ TCP P2P │ Gossip │ NonceLock │
└─────────────────────────────────────────────────┘
No full node. No archive. No global state sync.
1. Sender constructs TX (snapshot + merkle root)
2. NonceLock broadcast → double-spend preemption
3. TxVerify sent to active witnesses
4. Each witness validates and returns signature
5. Quorum reached → ConfirmTx atomic write
Confirmation time: ~1–1.5 seconds. No mempool. No blocks. No waiting.
# Clone and build
git clone https://github.com/andogi7777/cdml
cd cdml
go mod tidy
go build -o testnet/cdml.exe ./cmd/cdml # Windows
go build -o testnet/cdml ./cmd/cdml # Linux/Mac
# Generate testnet config (5 nodes)
go run scripts/localnet/setup.go
# Start all nodes
testnet\start_all.bat # Windows
./testnet/start_all.sh # Linux/Mac
# Initialize (fund balances + register witnesses)
go run scripts/localnet/init.go
# Check status
go run scripts/cli/main.go statusThis is a Research Preview. The infrastructure layer is open-sourced to demonstrate that a full-node-free design actually works.
Public:
- P2P networking layer (TCP, Gossip)
- Transaction signing and basic verification flow
- DAG management and storage layer
- Basic quorum mechanism
- 5-node local testnet scripts
Private (under active research):
- TLC calculation formula
- Cross-partner selection algorithm
- Dynamic witness rotation mechanism
- Stake slashing enforcement
Issues: Bug reports, design challenges, attack vectors
PRs: Infrastructure layer only (network, storage, crypto)
Core protocol changes (consensus, witness selection, TLC) require prior discussion.
Contact: andogi@naver.com
Apache 2.0 — Use it, fork it, learn from it.
The core consensus mechanism (TLC + cross-based trust) is patent pending. This is a precautionary measure only — to prevent early monopolization by any single entity. It is not intended to restrict open research or development.
CDML: Cross-Density Mutual Surveillance Ledger
A full-node-free, cross-based mutual surveillance DAG ledger
https://github.com/andogi7777/cdml
"We didn't build a better blockchain. We asked whether its most fundamental assumption was necessary."