What is Komodo?
👋 New to this? Just start reading at the top — it begins in plain English and gets more detailed as you scroll. Jump to any level:
🟢 The simple version
Plain English — no jargon. Start here.
Komodo is a multi-chain blockchain platform where independent blockchains (Smart Chains) can be created easily and secured through "delayed proof of work" — a mechanism that periodically writes each chain's state into Bitcoin's blockchain, making reorgs mathematically impossible once Bitcoin has confirmed the checkpoint.
Delayed Proof of Work — security borrowed from Bitcoin
The core innovation of Komodo is dPoW (Delayed Proof of Work). Most independent blockchains are vulnerable to 51% attacks because they have limited hashrate — a well-funded attacker can rent enough hashing power to reorganise the chain and double-spend. Komodo addresses this by regularly "notarising" its state into Bitcoin's blockchain.
How it works: a set of 64 notary nodes (elected by KMD stakeholders) write a hash of Komodo's current block into the Bitcoin blockchain every few minutes as a standard Bitcoin transaction. Once that notarisation is buried several Bitcoin confirmations deep, Komodo's consensus rules prevent any reorganisation that would contradict it. To undo a confirmed Komodo transaction, an attacker would need to reorganise Bitcoin itself — computationally infeasible at Bitcoin's hashrate.
Komodo Smart Chains
Smart Chains are independent blockchains that anyone can create using Komodo's technology. Each Smart Chain is a separate chain with its own transaction history, token supply, and consensus rules — but all benefit from dPoW security if they connect to Komodo's notary network. Smart Chains can be customised: different block times, supply schedules, privacy features (using Zcash's zk-SNARK code), and replay protection.
AtomicDEX — cross-chain trading
AtomicDEX (now rebranded as Komodo Wallet) is Komodo's atomic swap-based decentralised exchange — allowing direct peer-to-peer trading between different blockchains without any intermediary. Like Decred's DEX, atomic swaps ensure neither party can steal from the other. AtomicDEX supports Bitcoin, Ethereum, and hundreds of other chains.
Is it legal in India?
Yes. KMD is a VDA under Indian law. 30% tax and 1% TDS apply. See India regulation.
🟡 A bit more detail
For when you want to go a little deeper.
The notary node system
Komodo's 64 notary nodes are elected annually by KMD stakeholders through a proof-of-stake voting process. Each notary node operator runs both a full Bitcoin node and a full Komodo node. Every ~10 minutes, notary nodes reach consensus on the current Komodo block hash and broadcast a Bitcoin transaction containing this hash. They use a special Bitcoin mining difficulty that is much lower than standard — meaning notary nodes can mine their own low-difficulty Bitcoin blocks containing the notarisation data without competing with standard Bitcoin miners.
The security guarantee: once a Komodo block's hash is written into a Bitcoin block that is 6+ confirmations deep, that Komodo block can never be reorganised. The cost of reorganising Bitcoin to invalidate a Komodo notarisation exceeds any realistic attack budget on a Komodo Smart Chain.
Komodo was an early platform for independent blockchain projects that wanted dedicated chains rather than ERC-20 tokens. Several gaming projects and community tokens have launched as Komodo Smart Chains. AtomicDEX/Komodo Wallet supports trading across over 100 blockchain networks. The Komodo team has produced several open-source multi-chain tools used beyond just the Komodo ecosystem. Pirate Chain (ARRR) — a privacy coin using Komodo's technology — uses dPoW security while enforcing shielded-only transactions (all transactions must use zk-SNARKs).
Pirate Chain — a Komodo ecosystem project
Pirate Chain is a notable Komodo ecosystem project. It forked Komodo's technology and enforces mandatory shielded transactions — unlike Zcash where transparent transactions are the default, Pirate Chain makes shielded zk-SNARK transactions the only option. Combined with dPoW security (notarised into Komodo's chain), Pirate Chain claims to be one of the most private and secure cryptocurrencies. It is technically a separate chain, not KMD itself, but illustrates the Smart Chain model's flexibility.
Key Komodo metrics: number of active Smart Chains, notary node uptime and notarisation frequency, AtomicDEX trading volume, and KMD staking participation. Komodo's multi-chain architecture was ahead of its time — the concept of application-specific chains with shared security resembles what Polkadot and Cosmos later popularised. The dPoW security mechanism remains technically distinctive. Live data: CoinGecko · KMD Explorer.
🟣 The full technical picture
For the technically curious.
Komodo whitepaper: the dPoW security model formalised
The Komodo whitepaper (authored by jl777, Komodo's lead developer) formalises dPoW as "recycled proof of work." The notarisation transaction format: a special OP_RETURN output containing the hash of the Komodo (or Smart Chain) block being secured, the chain name, and metadata. The notary node consensus uses a modified version of Zcash's Equihash proof-of-work for the low-difficulty mining that allows notary nodes to write notarisations affordably. The whitepaper proves that the cost to reorg a notarised Komodo block equals the cost to reorg the corresponding Bitcoin block — making the security equivalent to Bitcoin for any transaction older than the most recent notarisation.
Source: jl777 et al. (2018). Komodo: An Advanced Blockchain Technology Focused on Freedom. komodoplatform.com/en/whitepaper · Komodo docs: developers.komodoplatform.com
Atomic swap mechanics in AtomicDEX
AtomicDEX uses Hash Time Locked Contracts (HTLCs) for atomic swaps. The protocol: (1) Alice generates a secret and hashes it; (2) Alice creates a Bitcoin HTLC locking her BTC — redeemable by Bob with the secret, or refundable to Alice after a timeout; (3) Bob creates a Komodo HTLC locking his KMD — redeemable by Alice with the same secret (which Bob has seen hashed but not revealed), or refundable to Bob after a shorter timeout; (4) Alice reveals the secret to claim Bob's KMD; (5) Bob sees the revealed secret and claims Alice's BTC. Either both swaps complete, or both time out and funds are returned. No intermediary can steal — the only risk is trade failure (refunded), not fund loss.
Komodo's Smart Chain creation is launched using the komodod command-line with parameters specifying chain rules: supply, block time, mining algorithm, privacy features (ac_private=1 enables Zcash-based shielded transactions), and whether to activate various features like the DEX. Each Smart Chain produces its own genesis block and runs as a completely independent node network. Smart Chains can have their own token economics, governance, and features while sharing AtomicDEX's liquidity and optionally registering with Komodo's notary nodes for dPoW security. The modularity allows significant customisation without forking core consensus code.
Key facts
- Security mechanism: Delayed Proof of Work (dPoW) — notarised into Bitcoin
- Notary nodes: 64 (elected by KMD stakeholders annually)
- Smart Chains: Custom independent blockchains with optional dPoW
- DEX: AtomicDEX / Komodo Wallet (HTLC atomic swaps)
- KMD supply: ~200 million
- Privacy: Optional zk-SNARKs (Zcash-based code)
- Founded: 2016 (jl777, SuperNET community)