Interactive Demo
Kerala
Blockchain
Academy
ECDSA · Keccak-256
Ethereum Addresses
Derive a real externally owned address and a CREATE contract address, byte by byte.
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Wei · Gwei · Ether
Ether Denominations
Live-convert between wei and every denomination up to ether.
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EIP-1559 · gas × price
Tx Cost Calculation
Calculate a transaction's total fee from gas used, base fee, and tip.
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BIP-39 · BIP-32/44
MetaMask Seed & Address
Build a 12-word recovery phrase, then derive an account's address from it.
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selector · head & tail
Calldata & ABI Encoding
See how a function selector is made and how a call's arguments are encoded, word by word.
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Hoodi testnet · MetaMask
Certificate dApp
Verify a certificate straight from the chain, or connect MetaMask and issue one on a live contract.
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Hoodi testnet · deposit & withdraw
Bank dApp
See the bank's balance and any address's balance, then deposit and withdraw ETH through MetaMask.
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eth_getBlockByNumber · eth_getTransactionByHash
JSON-RPC Explorer
Paste any node's JSON-RPC URL and call it yourself — raw request and response, decoded.
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Channel-based · permissioned
Hyperledger Fabric
Modular consensus, MSP/CA identity, endorsement-policy driven transactions.
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EVM-compatible · enterprise Ethereum
Hyperledger Besu
Familiar Ethereum tooling with QBFT/IBFT consensus for permissioned networks.
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UTXO · need-to-know
R3 Corda
Point-to-point flows and notarised states — no global broadcast of data.
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D theme · F fullscreen
