sum

What sum does

SUM Innovation Inc. operates sum, a Layer-1 blockchain protocol written entirely in Rust for verifiable transfers of files, credentials, payments, and encrypted messages across a distributed proof-of-stake network. The protocol integrates four subsystems on a single validator set: a fast ledger for the native Koppa (ϴ) token (800 billion fixed supply, minted at genesis, no inflation), a smart contract platform executing Rust-compiled WebAssembly (sum Contracts), content-addressed decentralized file storage with proof-of-retrievability (sum Storage), and a document delivery protocol using X25519 key exchange and XChaCha20-Poly1305 authenticated encryption (sum Mail). Consensus uses depth-based finality at approximately 12 seconds (6 blocks at 2-second block time), with a BFT module available but not yet activated, and validator slashing of 5% for double-signing and 0.1% for downtime.

The go-to-market is dual-tracked: product-led growth through a public mainnet JSON-RPC endpoint, an iOS mobile wallet in closed Apple TestFlight beta, a CLI wallet compiled from the node workspace, and JavaScript/TypeScript and Rust SDKs distributed via npm and crates.io; and community-led growth via validator node operators who stake Koppa, process transactions, and earn fees. The pricing model is purely transactional at approximately $0.0008 per transaction (0.001 ϴ minimum fee), with the entire fee paid to the block-proposing validator and no share captured by any protocol treasury.

The company targets multiple verticals including education (transcript delivery at claimed cost advantage versus $10–$15 incumbents such as Parchment), healthcare (patient-controlled medical record transfer), legal (multi-party document signing), financial services (cross-border payments without SWIFT delays or correspondent bank fees), credentialing, and invoicing. As of the most recent reporting, the network is in private beta with 1-10 employees, no disclosed funding rounds, no named customers, and no disclosed corporate revenue.

Name

sum

Legal name

SUM Innovation Inc.

Website

https://quosum.com

Company type

Private

Founded year

2025

Operating status

Operating

Headcount range

1–10 employees

Short description

SUM Innovation Inc. operates sum, a Layer-1 Rust-built proof-of-stake blockchain protocol for verifiable transfers of files, credentials, payments, and encrypted messages, targeting education, healthcare, legal, and cross-border payment use cases via developer SDKs, a mobile wallet, and a validator network.

Ownership category

akta.pro rank

Product category

Layer-1 Blockchain Protocol

NAICS

Financial Transactions Processing, Reserve, and Clearinghouse Activities (522320), Financial Transactions Processing, Reserve, and Clearinghouse Activities (52232)

SIC

Security & Commodity Brokers, Dealers, Exchanges & Services (6200)

akta.pro primary industry

Enterprise Payments & Tokenized Money (stablecoins, tokenized deposits, CBDC rails) (FSAPAIAJ)

akta.pro secondary industries

Payments, Remittances & Merchant Acceptance (checkout, invoicing, payroll) (FSAPAEAE), Digital Asset Custody & Wallet Infrastructure for Institutions (MPC/HSM, key mgmt, policy controls) (FSAPAIAE)

Keywords

• Layer-1 blockchain protocol
• Smart contract platform
• Decentralized file storage
• Cryptocurrency network
• Document verification protocol

Headquarters

HQ city

San Francisco

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Software

Cost components

Technology or R&D, Infrastructure, Personnel, Marketing or Sales

Revenue model

1. Transaction Fees: Every transaction must include a fee paid in Koppa base units. The entire fee goes to the validator who proposes the block. No fees are burned and no protocol treasury receives a share. Fee revenue scales directly with network usage, tying validator income to adoption. Minimum fee is 0.001 Ϙ.

Pricing tiers

Go-to-market motion2 records

Distribution channels7 records

Marketing channels5 records

Core offering

sum is a Layer-1 blockchain protocol written in Rust that enables verifiable transfers of files, credentials, payments, and encrypted messages across a distributed proof-of-stake network. The protocol bundles four integrated subsystems on a single validator set: a fast ledger for Koppa (ϟ) token transfers, a Rust-to-WebAssembly smart contract platform, decentralized file storage with proof-of-retrievability, and a document delivery protocol with end-to-end encryption. Transactions are cryptographically signed and recorded on an append-only ledger with depth-based finality of approximately 12 seconds.

Product overview

sum is a Layer-1 blockchain protocol and network built entirely in Rust. The portfolio consists of the core sum Protocol/Chain (the base blockchain), which runs four integrated subsystems: sum Contracts (smart contract platform using Rust-compiled WASM), sum Storage (decentralized encrypted file storage), sum Mail (end-to-end encrypted document messaging), and Koppa (the native cryptocurrency token). Supporting products include the sum Wallet App (iOS mobile wallet), sum CLI Wallet, sumchain Node Binary, JavaScript SDK, and Rust SDK for developers. The network uses a distributed proof-of-stake consensus with validator nodes, and the Koppa token (800B fixed supply) powers transaction fees, staking, and storage rent.

Differentiator

Problem solved

Functional benefit

Products and services

• sum Protocol A Layer-1 blockchain protocol for verifiable transfers of files, credentials, payments, and encrypted messages across a distributed proof-of-stake network. Transactions are cryptographically signed and recorded on an append-only ledger with finality under five seconds.
• sum Chain The Layer-1 blockchain at the foundation of the sum network, written entirely in Rust. Settles its own transactions rather than depending on another chain. Runs four functions: a fast ledger for Koppa, a smart contract platform, a decentralized file store, and a document delivery protocol.
• sum Contracts Smart contract platform for sum chain. Contracts are written in Rust, compiled to WebAssembly, and executed inside nodes with strict gas metering. Contracts have their own accounts, can hold Koppa, and are interacted with via ContractCall transactions.
• sum Storage Decentralized file storage layer for the sum network. Files are content-addressed, encrypted client-side, and replicated across storage nodes. The chain maintains metadata for locating and verifying files. Storage nodes periodically prove they still hold data.
• sum Mail Document delivery protocol that sends documents and messages with on-chain proof of authenticity. Messages are encrypted end-to-end using X25519 key exchange and XChaCha20-Poly1305 authenticated cipher. The recipient can verify document integrity and origin without a relay server.
• Koppa (ϟ) Native token of the sum network with 800 billion total supply (fixed at genesis, no inflation). Required for transaction fees, validator staking, delegation bonds, and storage rent. Has 9 decimal places with 1 ϟ = 1,000,000,000 base units.
• sum Wallet App (iOS) Mobile wallet application for iOS that enables users to create accounts, view Koppa balance, and send and receive payments. Keys are generated and stored on-device. Currently in closed Apple TestFlight beta.
• sum CLI Wallet (sumchain-wallet) Command-line wallet for account management, Koppa transfers, and chain queries. Handles key generation, encrypted keystore files, transaction signing, and balance queries. Compiled from Rust alongside the node binary.
• sumchain Node Binary Node binary that runs full nodes or validator nodes on the sum network. Full nodes store the blockchain, execute transactions, maintain state, and serve the JSON-RPC API. Validator nodes additionally participate in block production.
• JavaScript SDK (@sumchain/sdk) Official TypeScript/JavaScript SDK for interacting with sum chain. Works in Node.js and browser environments. Provides Provider class for RPC communication, methods for account queries, transaction submission, and NFT operations.
• Rust SDK (sumchain-crypto, sumchain-primitives) Rust SDK for building and signing sum chain transactions. The sumchain-crypto crate provides Ed25519 signing, Blake3 hashing, X25519 ECDH, and ChaCha20-Poly1305 encryption. The sumchain-primitives crate provides core types.
• Validator Nodes Validator nodes receive, verify, and append transactions to the sum chain ledger. Running a validator requires staking Koppa and meeting hardware requirements. Validators earn transaction fees for each block they help finalize.

Quantifiable outcome

• Transaction cost reduction: $0.0008 vs $10-$15 for transcript delivery platforms like Parchment
• +4 more outcomes

Segments9 records

Ideal customer profiles7 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Feature10 records

Scale indicators8 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Stellar Development Foundation: Stellar is a Layer-1 blockchain purpose-built for cross-border payments, asset tokenization, and verifiable transfers to financial institutions and fintechs. Like sum, it markets low-fee, fast-finality settlement for payments and tokenized assets, and similarly supports smart contracts and issued tokens on a single chain.
• Hedera: Hedera is an enterprise-grade distributed ledger offering tokenization, file storage, messaging, and smart contracts with low, predictable fees and fast finality. Sum's positioning around verifiable transfers of files, credentials, payments, and messages on a single governed network directly parallels Hedera's enterprise service bundle.
• Ripple (XRP Ledger): Ripple and the XRP Ledger target cross-border payments and tokenization with sub-second finality and very low per-transaction fees. Sum's $0.0008, sub-5-second cross-border value transfer pitch overlaps directly with Ripple's positioning versus SWIFT and correspondent banks.
• Algorand: Algorand is a Layer-1 focused on payments, asset tokenization, and verifiable credentials with pure proof-of-stake consensus and fast finality. Sum's combination of tokenized money, document delivery, and decentralized storage on a single PoS chain mirrors Algorand's enterprise and CBDC use cases.

Broad incumbents

• Solana: Solana is a high-throughput Layer-1 with sub-second finality, low fees, and a deep payments and stablecoin ecosystem. While Solana serves a much broader consumer and DeFi market, its performance profile and payment positioning make it a direct benchmark for sum's claims around 2-second blocks and $0.0008 transactions.
• Avalanche: Avalanche offers subnets for tokenized real-world assets, payments, and enterprise chains with fast finality. Sum's pitch for an all-in-one chain for verifiable transfers, payments, and storage is conceptually similar to Avalanche's multi-chain L1 strategy for institutional use cases.
• Aptos: Aptos is a Layer-1 written primarily in Rust (via the Move language), targeting high throughput, fast finality, and institutional-grade asset tokenization. Sum's Rust-only stack and enterprise payments/asset focus make Aptos a relevant architectural and go-to-market comparable.
• NEAR Protocol: NEAR is a sharded Layer-1 with low fees, fast finality, and a growing payments and tokenization ecosystem. Sum's sub-cent transactions and sub-5-second cross-border finality compete in the same developer- and payment-friendly L1 segment.
• Polygon: Polygon offers a suite of L1/L2 chains for tokenized assets, payments, and identity, with extensive enterprise and developer tooling. Sum's focus on verifiable transfers, smart contracts, and developer SDKs competes with Polygon's payments and RWA ecosystem positioning.

Emerging players

• Canton Network: Canton is an enterprise blockchain network purpose-built for tokenized real-world assets, regulated financial workflows, and verifiable institutional data exchange. Sum's enterprise document signing, credentials, and payment use cases overlap with Canton's regulated asset infrastructure thesis.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights6 records

Customer concentration

• GitHubgithub.com/SUM-INNOVATION
• LinkedInlinkedin.com/company/suminnovation

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about sum