EIP-712 Types

All EWP signed messages use EIP-712 structured data format.

Domain Separator

All EWP messages share the same domain:

{
  "name": "epress world",
  "version": "1",
  "chainId": 1
}

Field	Value	Note
name	"epress world"	Protocol namespace. Prevents cross-application signature reuse.
version	"1"	Domain schema version. Verifiers MUST reject mismatched versions.
chainId	1	Retained for full EVM tooling compatibility.

Primary Types

CreateConnection

Initiates a follow relationship. Signed by follower.

Field	Type	Description
followerAddress	address	Follower's Ethereum address
followeeAddress	address	Followee's Ethereum address
followeeUrl	string	Followee's canonical URL
followerUrl	string	Follower's canonical URL
timestamp	uint64	Unix seconds

Signer: follower. Recovered address MUST equal followerAddress.

DestroyConnection

Terminates a connection. Signed by either party.

Field	Type	Description
followerAddress	address	The follower in the connection
followeeAddress	address	The followee in the connection
timestamp	uint64	Unix seconds

Signer: either party. Operation inferred from recovered signer:

• Recovered = followerAddress → Unfollow
• Recovered = followeeAddress → RemoveFollower
• Recovered = neither → MUST reject

Field Ordering

followerAddress is listed first for consistency. Field order matters for EIP-712 typeHash computation; implementations MUST preserve this ordering.

NodeProfileUpdate

Broadcasts profile changes. Signed by node owner.

Field	Type	Description
ownerAddress	address	Node owner's Ethereum address
url	string	Updated canonical URL
title	string	Display name
description	string	Node description; MUST be "" when not set
timestamp	uint64	Must be strictly greater than prior accepted value

Signer: node owner. Recovered address MUST equal ownerAddress.

StatementOfSource

Content provenance. Signed by publisher.

Field	Type	Description
contentHash	bytes32	SHA-256 of content
publisherAddress	address	Publisher's address
timestamp	uint64	Publication time; used for ordering and deduplication

Signer: publisher. Recovered address MUST equal publisherAddress.

The StatementOfSource is an immutable record.

Encoding Rules

bytes32 (contentHash): In JSON, contentHash is a 0x-prefixed 64-character lowercase hex string. For EIP-712 encoding, decode to raw 32 bytes. SHA-256 output is exactly 32 bytes; no truncation or padding needed. bytes32 values are encoded as raw bytes directly — not keccak256-hashed.

string: Encoded as keccak256(UTF-8(value)) per EIP-712.

address: 20 bytes, left-padded with 12 zero bytes to form a 32-byte word.

uint64: 8-byte unsigned integer, left-padded with 24 zero bytes to form a 32-byte word.

Timestamp Field Semantics

All timestamp fields use Unix epoch seconds encoded as uint64.

Field	Semantic	Freshness Check
CreateConnection.timestamp	Request time	REQUIRED: receiver's clock ± 1 hour
DestroyConnection.timestamp	Request time	REQUIRED: receiver's clock ± 1 hour
NodeProfileUpdate.timestamp	Profile version	NO freshness; MUST be > prior accepted value
StatementOfSource.timestamp	Publication time	NO freshness; deduplication only

JSON Schemas

Machine-readable JSON schemas are available in the schemas/ directory.