Colossus
Colossus Digital builds the Institutional Hub, a B2B middleware platform connecting custody providers (Fireblocks, Ledger Enterprise, Dfns) to validators across 30+ proof-of-stake blockchains, enabling banks, asset managers, funds, exchanges, and foundations to stake digital assets and earn yield without leaving their custody environment.
- Company typePrivate
- Founded2021
- HeadquartersRome, Italy
- Headcount11–50
- GTM typeB2B
- OfferingSoftware
What Colossus does
Colossus Digital SA is a Switzerland-domiciled (Rolle) blockchain infrastructure company founded in 2021, with operational offices in Rome and Singapore. It builds the Institutional Hub, a B2B middleware platform that connects institutional custody solutions — Fireblocks, Ledger Enterprise, and Dfns — to validators across more than 30 proof-of-stake blockchains (Ethereum, Solana, Cardano, Avalanche, Polkadot, Cosmos, NEAR, Bitcoin, Ton, and others), enabling banks, asset managers, funds, exchanges, foundations, and custodians to stake digital assets and generate yield without moving assets out of their custody environment. The platform is non-custodial: transactions are constructed by Colossus but signed inside the customer's MPC/HSM custody environment, with policy inheritance (multi-sig, whitelists, velocity limits), tamper-evident audit trails, multi-party transaction crafting, transaction simulation, offline/air-gapped signing, and a Transaction Decoder tool covering 19+ networks.
The technical stack is NestJS, MongoDB, Docker/Kubernetes on Azure AKS, exposed via an OpenAPI-based Core API and Decoder API suite, with both a self-service web dashboard and programmatic REST access. The company is OAM-registered in Italy, holds ISO 9001, ISO/IEC 27001, PCI DSS, DORA, and GDPR certifications, and publishes a 99.9% uptime SLA with sub-12-hour RTO. Colossus monetizes through platform and transaction fees associated with staking operations routed through the Hub, sold via an enterprise field-sales motion led by a CRO and an Institutional Sales Representative based in Rome, with no public pricing tiers (quote-based engagement). Total disclosed funding is approximately USD 1.5–2.3M across a pre-seed and a EUR 1M bridge round led by SBI Ven Capital (June 2025), with Azimut Holding and Sygnum participating; the company has also announced an Ethereum layer-2 Crypto Card Network targeting KYC-less stablecoin payments as a future product line.
Colossus firmographics
Firmographics- Name
- Colossus
- Legal name
- Colossus Digital SA
- Website
- https://colossus.digital
- Company type
- Private
- Founded year
- 2021
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Colossus Digital builds the Institutional Hub, a B2B middleware platform connecting custody providers (Fireblocks, Ledger Enterprise, Dfns) to validators across 30+ proof-of-stake blockchains, enabling banks, asset managers, funds, exchanges, and foundations to stake digital assets and earn yield without leaving their custody environment.
- Ownership category
- akta.pro rank
Colossus industry classification
Industry- Product category
- Institutional Staking Infrastructure
- NAICS
- Financial Transactions Processing, Reserve, and Clearinghouse Activities (522320), Financial Transactions Processing, Reserve, and Clearinghouse Activities (52232), Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (518)
- SIC
- Finance Services (6199), Security & Commodity Brokers, Dealers, Exchanges & Services (6200)
- akta.pro primary industry
- Staking-as-a-Service Platforms (Non-Custodial) (FSADAHAF)
- akta.pro secondary industries
- Custodial Staking Providers (FSADAHAG), Custodial Wallets & Hosted Accounts (exchange/fintech custody, omnibus wallets) (FSAPACAC), B2B Crypto Payouts, Mass Payments & Treasury Disbursements (FSADAIAF), Institutional Qualified Custody (Banks/Trust Companies) (FSADACAA)
Keywords
Where Colossus is headquartered
LocationHeadquarters
- HQ city
- Rome
- HQ country
- Italy
- HQ region
- Europe
Offices3 records
Markets served
Colossus business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Technology or R&D, Personnel, Infrastructure, Marketing or Sales, Operations
Revenue model
- Staking Infrastructure / SaaS Fees: Colossus Digital acts as a technology provider and middleware, charging fees for access to the Institutional Hub platform which connects custody providers to validators. Revenue is derived from platform/service fees associated with staking operations conducted through the Hub.
- Validator / Network Participation Revenue: Institutions delegate assets to validators via the Hub; Colossus facilitates this workflow and earns fees through its role as the connector between custodians and validators across multiple PoS networks.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Annual | Institutional Sales Representative salary band |
Go-to-market motion1 record
Distribution channels4 records
Marketing channels9 records
Colossus product offering
Product offeringCore offering
Colossus Digital operates the Institutional Hub, a B2B platform that enables financial institutions to stake more than 20 different digital assets to validators of choice across 30+ proof-of-stake blockchains directly from their existing custody solutions (Fireblocks, Ledger Enterprise, Dfns) without moving assets out of custody. The company also offers the Decoder open-source transaction inspection tool, a unified REST API for programmatic staking workflows, and an Offline Signer workflow for air-gapped signing. Revenue is generated through platform/service fees associated with staking operations conducted through the Hub.
Product overview
Colossus Digital offers a suite of blockchain infrastructure products centered on the Institutional Hub, a B2B platform that connects custody solutions (Fireblocks, Ledger Enterprise, Dfns) to validators across 30+ PoS blockchains, enabling institutions to stake and generate yield without moving assets from custody. The product portfolio includes the Decoder tool for transaction transparency and a comprehensive API suite for programmatic access. The company also has an announced layer-2 crypto card network project targeting KYC-less payments.
Differentiator
Problem solved
Functional benefit
Brands
- Institutional Hub: A cutting-edge B2B platform setting the institutional standard for secure, non-custodial and efficient staking. Enables financial institutions to stake across 30+ blockchains directly from their existing custody solutions.
- Decoder
Products and services
- Institutional Hub B2B platform that enables financial institutions (banks, asset managers, funds, exchanges, foundations) to stake more than 20 different digital assets to validators of choice across 30+ proof-of-stake blockchains directly from their existing custody solutions (Fireblocks, Ledger Enterprise, Dfns) without moving assets. Features include cross-chain staking, portfolio overview, multi-party transaction crafting, transaction lens, simulation environment, and decoder verification.
- Decoder (Open-Source Transaction Decoder Tool) Open-source online tool that decodes raw hexadecimal or Base64 transaction payloads into human-readable JSON across 19+ supported networks (including NEAR), allowing institutions to inspect smart contract interactions and transaction parameters before signing.
- Institutional Hub API (Core API) Unified OpenAPI-based REST API framework for creating, validating, signing, and broadcasting blockchain transactions across multiple PoS networks. Supports direct custody integrations (Fireblocks, Ledger Enterprise, Dfns) and offline signing workflows, with endpoints for auth, flows, transactions, rewards reporting (Polkadot/Kusama), and utils.
- Transaction Decoder API REST API endpoint (POST /v1/decode/{chain}) that decodes raw blockchain transactions for supported chains into structured JSON objects with human-readable transaction details, available for programmatic integration.
Quantifiable outcome
- Staking yields generated on custodial assets that would otherwise remain idle in custody
- +3 more outcomes
Companies that use Colossus
Customer profileNamed customers2 records
Segments6 records
Ideal customer profiles5 records
Colossus technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration5 records
Feature8 records
Colossus partnerships and signals
Strategic signalPartnerships
Six partnerships are on record, tiered core and minor.
- Luminary BankcoreLuminary Bank and Colossus Digital partnered to provide compliant, enterprise-grade yield services for international businesses via multi-chain staking without transferring ownership of assets. The new service architecture allows clients to maintain custody while earning staking rewards.
- P2P.orgcoreP2P.org is onboarded on the Institutional Hub as a validator partner, enabling institutional clients (such as Exmo) to delegate assets to P2P.org validators directly from their custody. P2P.org is a non-custodial staking provider offering enterprise-grade infrastructure across 40+ PoS networks.
- FireblockscoreFireblocks is a supported custody provider on the Institutional Hub, enabling institutions to stake assets directly from their Fireblocks custody environment without asset movement. Native API integration with Colossus platform.
- Ledger EnterprisecoreLedger Enterprise is a supported custody provider integrated with the Institutional Hub. Assets can be staked directly from Ledger Enterprise custodians (e.g., Exmo case study) without leaving the custody perimeter.
- DfnscoreDfns is a supported custody provider on the Institutional Hub, enabling institutions to stake assets via Dfns' custody infrastructure with signing remaining inside the Dfns environment.
- NEAR FoundationminorNEAR Foundation and Colossus Digital share a common vision on gas abstraction. Colossus participated in NEAR's RFP for gas abstraction and contributed thought leadership on simplifying gas management for institutional players using the Institutional Hub and Decoder tools.
Scale indicators8 records
Recent moves6 records
Expansion highlights6 records
Colossus competitors and assessment
Company assessmentDirect peers
- Allnodes: Non-custodial staking and node hosting platform supporting 40+ PoS networks with both retail and institutional customers. Overlaps with Colossus on validator operations and staking infrastructure.
- Figment: Institutional staking infrastructure provider operating validator services and middleware across 50+ Proof-of-Stake networks. Directly comparable to Colossus's Institutional Hub: B2B SaaS, multi-chain, regulated financial institution customer base, and similar custody-staking orchestration value proposition.
- Blockdaemon: Institutional blockchain infrastructure provider offering staking, node management, and APIs across 60+ protocols. Closest comparable by combined validator + middleware + custody-adjacent service offering targeting banks and asset managers.
- Kiln: Enterprise-grade staking-as-a-service platform providing validator infrastructure and white-label staking APIs to custodians, wallets, and exchanges. Comparable in product surface (validator + middleware), target buyers, and focus on regulated institutions.
- Chorus One: Institutional staking provider offering validator operations and staking infrastructure across 40+ networks, including direct integrations with custodians and exchanges. Direct competitor in the institutional staking middleware category.
- P2P.org: Non-custodial staking provider with validator infrastructure across 40+ PoS networks. Functions both as a Colossus partner and as a direct competitor in validator selection and institutional staking services.
- Stakin: Institutional staking and infrastructure provider offering validator services and API access across multiple PoS networks. Comparable by GTM (institutional focus), product surface, and European operating base.
- Everstake: Validator and staking-as-a-service provider with 70+ supported networks, serving institutional and retail clients. Functions both as a Colossus partner (validator integration) and competitor in the broader staking infrastructure space.
Broad incumbents
- Anchorage Digital: Federally chartered digital asset bank offering institutional custody plus native staking. Competes with Colossus from the custody side of the stack, with broader portfolio (trading, governance) but narrower multi-custody flexibility.
- Fireblocks: Institutional custody and digital asset platform that is both Colossus's integration partner and a potential competitor if it expands native staking offerings to its institutional clients.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights6 records
Customer concentration
Colossus social profiles
Digital presenceColossus compliance and trust
Trust signalCompliance5 records
Colossus financial estimates
Financial estimateRevenue estimate
Valuation estimate
Colossus leadership team
Management profileNumber of profiles
Profiles4 records
Colossus funding detail
Funding detailFunding overview
Funding rounds3 records
Investors4 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Colossus M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Colossus
What does Colossus do?
Colossus Digital operates the Institutional Hub, a B2B platform that enables financial institutions to stake more than 20 different digital assets to validators of choice across 30+ proof-of-stake blockchains directly from their existing custody solutions (Fireblocks, Ledger Enterprise, Dfns) without moving assets out of custody. The company also offers the Decoder open-source transaction inspection tool, a unified REST API for programmatic staking workflows, and an Offline Signer workflow for air-gapped signing. Revenue is generated through platform/service fees associated with staking operations conducted through the Hub.
Is Colossus a public or private company?
Colossus is a private company. It is classified as venture growth investor backed and is currently operating.
When was Colossus founded?
Colossus was founded in 2021. It employs 11 to 50 people.
Where is Colossus based?
Colossus is headquartered in Rome, Italy, in the Europe region.
How does Colossus make money?
Two revenue lines are on record. Staking Infrastructure / SaaS Fees are the primary driver. The others are validator / Network Participation Revenue.
Who are Colossus's main competitors?
Direct peers on record are Allnodes, Figment, Blockdaemon, Kiln, Chorus One, P2P.org, Stakin and Everstake. Broad incumbents are Anchorage Digital and Fireblocks.
Does Colossus have an API?
Yes. Colossus Digital API provides a unified framework to create, validate, sign, and broadcast blockchain transactions across multiple networks. It supports direct custody integrations (Fireblocks, Ledger Enterprise, Dfns) and an offline signing mode for full operational flexibility and compliance. The API is based on OpenAPI specification with endpoints for: Auth, Flows (transaction creation/management), Transactions, Decoder, Utils (address info, staking account management), Rewards (Polkadot rewards history and reporting), and Models. Authentication methods include auth0_jwt and apiKey. Base URLs: https://dev.api.hub.colossus.digital/core/v1 (Core API) and https://api.decoder.colossus.digital/v1 (Decoder API). Developer documentation is at docs.colossus.digital/institutional-hub-api/api-reference.
What industry is Colossus in?
Colossus's product category is Institutional Staking Infrastructure. Its primary akta.pro industry code is FSADAHAF, Staking-as-a-Service Platforms (Non-Custodial), with a secondary code of FSADAHAG, Custodial Staking Providers. Its NAICS code is 522320 and its SIC code is 6199.