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Version: 1.0.0

DLTM Derivatives API

REST API for derivatives trading on DLT Markets.

The API abstracts exchange-specific details behind a unified interface using canonical instrument symbols.

Authentication​

All requests require ed25519 signature authentication via three headers:

HeaderDescription
X-Public-KeyYour public key, hex-encoded. Obtained from the DLT dashboard.
X-NonceNanosecond Unix timestamp. Must be within 30 seconds of server time. Each nonce can only be used once and must be greater than the last used nonce.
X-Signatureed25519 signature of the request, hex-encoded.

Signature construction:

message = {METHOD}{uri}{body}{nonce}
  • METHOD — HTTP method in uppercase (e.g. POST)
  • uri — Full path including query string, excluding domain (e.g. /v1/derivatives/orders)
  • body — JSON request body for POST/PUT/PATCH; empty string otherwise
  • nonce — Same nanosecond timestamp sent in X-Nonce

Example (POST order):

POST/v1/derivatives/orders{"customer_code":"3a034186-...","instrument_symbol":"BTCUSD_PERP",...}1531816217872000000

Sign the resulting message with your ed25519 private key and hex-encode the result.

Conventions​

  • Decimal values are represented as strings to avoid floating-point precision issues
  • Identifiers use UUID format and are referred to as code (e.g., order_code)
  • Timestamps use ISO 8601 format (date-time)
  • Pagination uses page and limit query parameters
  • Sorting uses sort_by and sort_direction query parameters
  • List responses follow the format {total: int, records: [Item]}

Rate Limiting​

API requests are subject to rate limiting. When the limit is exceeded, the API returns a 429 Too Many Requests response with a Retry-After header.

Authentication​

ed25519 API key. Must be accompanied by X-Nonce and X-Signature headers. See Authentication section for signature construction details.

Security Scheme Type:

apiKey

Header parameter name:

X-Public-Key

Contact

DLT Markets:

URL: https://dlt-finance.com