Encrypted Messaging (SRC-201)

Per-chain messaging parameters.

{"jsonrpc":"2.0","method":"messaging_getConfig","params":[],"id":1}

{
  "jsonrpc": "2.0",
  "result": {
    "daily_quota": 100,
    "max_message_size": 65535,
    "min_trust_stake": "100000000000",
    "sponsorship_enabled": true
  },
  "id": 1
}

Builds, signs, and submits a sponsored RegisterPublicKeySponsoredV1 transaction (fee paid by the relayer) that registers the caller's messaging public key through consensus. The registrant signs the canonical preimage "SUMCHAIN/SRC-201/REGISTER-SPONSORED/v1" || chain_id_le || sponsor_address || registrant_pubkey. Returns { success, tx_hash } on submission — success means submitted/pending, NOT yet registered; poll account_getPublicKey (or the tx receipt) to confirm inclusion. Requires the chain to have messaging_sponsored_registration_enabled_from_height active.

Submits an encrypted message via a sponsoring relayer.

Quota status for a sender.

Recipient inbox-filter rules.

Inbox query.

Outbox query.

Message lookup by tx.

Messages in a block.

Message ciphertext.

Pending sponsorship payment.

All pending payments.

Trust-stake balance.

Spam-score lookup.

Contact-list check.

Block-list check.