osm15

Octra Sign Message Standards - OSM-15

A high-performance Go library implementing the OSM-15 (Octra Structured Message) standard. Designed for secure, recursive, and domain-isolated data signing in the Octra ecosystem.

🚀 Key Functions for Developers

1. Identity & Address

Convert Ed25519 public keys into the official Octra address format.

// Convert public key bytes to "oct..." address
address := osm15.PublicKeyToAddress(publicKeyBytes)

2. Signing Structured Data

Sign complex messages with recursive type support.

data := osm15.TypedData{
    Domain: osm15.TypedDomain{Name: "OctraPay", Version: "1", ChainID: 1},
    Types: map[string][]osm15.TypedMember{
        "Transaction": {
            {Name: "amount", Type: "uint256"},
            {Name: "to", Type: "address"},
        },
    },
    PrimaryType: "Transaction",
    Message: map[string]interface{}{
        "amount": 5000,
        "to": "oct1abc...",
    },
}

// Returns Base64 signature
signature, err := osm15.SignTypedData(data, privateKeyBase64)

3. Verification & Signer Recovery

Verify if a signature is valid and recover the signer's address.

// Boolean verification
isValid, err := osm15.VerifyTypedData(data, signature, publicKeyBase64)

// Get signer's Octra address directly from signature
address, err := osm15.GetSignerAddress(data, signature, publicKeyBase64)

4. JSON Export & Import

Easily export the signed payload to JSON or verify directly from a JSON file.

// Export to formatted JSON
jsonBytes, err := osm15.ExportToJSON(data, signature)

// Verify directly from JSON payload
isValid, err := osm15.VerifyFromJSON(jsonBytes, publicKeyBase64)

5. Debugging Signing Text

Get the raw string that is being hashed and signed (for debugging or hardware wallet display).

rawText, err := osm15.GetSigningText(data)
fmt.Println(rawText)

⚙️ Technical Specifications

• Hashing: Recursive SHA-256 (EIP-712 Style)
• Signature: Ed25519
• Prefix: \x19Octra Typed Data:
• Encoding: Base64 (Signature & Keys) / Base58 (Address)

🛠 Installation

go get [github.com/dayuwidayadi57/osm15](https://github.com/dayuwidayadi57/osm15)

💡 Why OSM-15?

If you are familiar with Ethereum's EIP-712, you will feel at home. OSM-15 brings:

• Human-readable signing: Users see exactly what they sign.
• EIP-712 Style: Familiar domain separation and recursive hashing.
• Enhanced Security: Optimized for Ed25519 and SHA-256 (Octra Native). cat < README.md

OSM15

Octra Go SDK Standardized Protocol

Professional Open Source Contributor Mode.

Versioning

• Version: v0.2.2
• Status: Stable
• Date: 2026-01-19

📜 License

(c) 2026 QiubitLabs Team. Licensed under the MIT License.