Accounts

Accounts on c8ntinuum are compatible with both Ethereum and Cosmos SDK tooling. Every account has dual representation for cross-ecosystem compatibility.

Address Formats

Hex (Ethereum)

0x91defC7fE5603DFA8CC9B655cF5772459BF10c6f

Bech32 (Cosmos)

c81j800cll9vq7l4rxfke2u74mjgkdlzrr0nfjdlj

Both formats reference the same underlying account. Use whichever is appropriate for your context — 0x for EVM interactions, c8 for Cosmos SDK operations.

Key Derivation

c8ntinuum uses Ethereum-compatible HD key derivation:

Property	Value
Curve	ECDSA secp256k1
Default HD Path (`ctmd`)	`m/44'/60'/0'/0/0`
Ledger Ethereum HD Path	`m/44'/60'/0'/0/0`
Default Coin Type (`ctmd`)	60 (Ethereum)
Ledger Ethereum Coin Type	60 (Ethereum)
Key Type	`eth_secp256k1`

ctmd keys add uses coin type 60 by default, so a mnemonic recovered with ctmd derives the same 0x address as the first MetaMask account for that mnemonic. Coin type 118 (m/44'/118'/0'/0/0) is used only when you pass --coin-type 118, for example with the Ledger Cosmos app. c8ntinuum supports eth_secp256k1 account keys. Ledger coin type 60 uses the Ethereum app and creates an eth_secp256k1 public key; Ledger coin type 118 uses the Cosmos app and creates a Cosmos secp256k1 public key.

Account Types

Type	Prefix	Key
User accounts	`c8` / `0x`	`eth_secp256k1`
Validator operators	`c8valoper`	`eth_secp256k1`
Consensus nodes	`c8valcons`	`ed25519`

EIP-7702 Status

EIP-7702 Set Code is fully supported for EOA code delegation on c8ntinuum.

Querying Accounts

JSON-RPC (standard Ethereum):

curl -X POST https://public-evm-rpc.c8ntinuum.com \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_getBalance","params":["0x...","latest"],"id":1}'

Cosmos REST API:

# Mainnet REST/LCD endpoint:
curl "https://public-comet-grpc-web.c8ntinuum.io/cosmos/auth/v1beta1/accounts/{address}"

# On local nodes, REST uses tcp://127.0.0.1:1317 when enabled:
curl "http://127.0.0.1:1317/cosmos/auth/v1beta1/accounts/{address}"

Learn

Core Concepts

Chain Architecture

Execution and EVM

Interoperability and IBC

Modules & Precompiles

Transaction Lifecycle

Address Formats

Hex (Ethereum)

Bech32 (Cosmos)

Key Derivation

Account Types

EIP-7702 Status

Querying Accounts

​Address Formats

​Hex (Ethereum)

​Bech32 (Cosmos)

​Key Derivation

​Account Types

​EIP-7702 Status

​Querying Accounts

Address Formats

Hex (Ethereum)

Bech32 (Cosmos)

Key Derivation

Account Types

EIP-7702 Status

Querying Accounts