Simple Proof
Simple Proof provides Bitcoin-anchored document timestamping services that create immutable, trustlessly verifiable proofs for governments, election administrators, and enterprises. Its platform uses OpenTimestamps to secure public records against tampering. Founded 2023.
- Company typePrivate
- Founded2023
- HeadquartersGuatemala City, Guatemala
- Headcount1–10
- GTM typeB2B
- OfferingSoftware
What Simple Proof does
Simple Proof is a private, pre-seed-stage company that provides blockchain-based document timestamping services anchored to the Bitcoin blockchain. Founded in 2023 and operating from Guatemala City with U.S. offices in Tysons Corner, Virginia and Longmont, Colorado, the company serves government agencies, election administrators, and organizations requiring tamper-evident record-keeping. Its core service hashes digital documents using SHA-256, aggregates them into Merkle trees, and anchors the resulting proofs to Bitcoin via the OpenTimestamps protocol, producing immutable, trustlessly verifiable timestamps that anyone can independently confirm without a centralized authority.
The product suite comprises a self-service web console, a REST API with multi-language SDKs, a public verification portal, the OTS Navigator for OpenTimestamps file inspection, a Rolling Timestamps module for continuous streaming data (video, IoT, security logs), email timestamping, and pre-built integrations with Amazon S3 and DocuSign. Distribution runs through self-serve (freemium) channels, the AWS Marketplace (as AWS Qualified Software), the DocuSign App Center, and direct enterprise sales into government buyers. Revenue is generated via tiered subscriptions (free tier plus paid tiers), usage-based API and integration fees, and bespoke government/enterprise contracts.
Customer wins to date include Guatemala's 2023 presidential election, Screven County (GA) and Williamson County (TN) in the U.S., El Salvador's Ministry of Foreign Affairs and Ministry of Environment, and El Salvador's CUBO+ graduation certificates. The company raised a pre-seed round in January 2025, with ego death capital and Wolf listed as investors. Leadership comprises CEO Carlos Toriello, CTO Rafa Cordon, and Founder/BD/CISO Christian Lowenthal.
Simple Proof firmographics
Firmographics- Name
- Simple Proof
- Legal name
- Simple Proof Inc.
- Website
- https://simpleproof.com
- Company type
- Private
- Founded year
- 2023
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Simple Proof provides Bitcoin-anchored document timestamping services that create immutable, trustlessly verifiable proofs for governments, election administrators, and enterprises. Its platform uses OpenTimestamps to secure public records against tampering. Founded 2023.
- Ownership category
- akta.pro rank
Simple Proof industry classification
Industry- Product category
- Blockchain Document Timestamping and Verification
- NAICS
- Financial Transactions Processing, Reserve, and Clearinghouse Activities (522320)
- SIC
- Finance Services (6199)
- akta.pro primary industry
- Proof of Reserves, Attestations & Custody Assurance (FSAPAJAH)
- akta.pro secondary industry
- Proof of Reserves, Attestations & On-Chain Audit/Assurance (FSADALAK)
Keywords
Where Simple Proof is headquartered
LocationHeadquarters
- HQ city
- Guatemala City
- HQ country
- Guatemala
- HQ region
- Latin America
Offices2 records
Markets served
Simple Proof business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure
Revenue model
- Subscription-based Timestamping Service: Tiered subscription model with free account option and paid tiers for higher volume usage. Users can timestamp documents via web console, API, or integrations. Volume-based pricing for enterprise deployments.
- Enterprise & Government Contracts: Direct engagement with government agencies and enterprises for securing election records, public documents, and compliance documentation. Custom deployments and potentially multi-year contracts.
- API & Integration Fees: Usage-based or tiered pricing for API access and integrations including AWS Marketplace listing, DocuSign app integration, and S3 replication.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Freemium | Monthly | Free Account - Entry-level tier for individuals and small teams to try the service |
Go-to-market motion3 records
Distribution channels6 records
Marketing channels8 records
Simple Proof product offering
Product offeringCore offering
Simple Proof provides Bitcoin-anchored document timestamping and verification services that allow governments and enterprises to create tamper-evident, independently auditable proofs of document existence and integrity. The company combines cryptographic hashing with the OpenTimestamps protocol to anchor document fingerprints to the Bitcoin blockchain, producing low-cost, permanent proof-of-existence records usable for election auditing, compliance, and enterprise document workflows.
Product overview
Simple Proof offers a modular product suite centered on the Immutable Proof Service, which provides Bitcoin blockchain-based document timestamping and verification. The core offering consists of the Console (web interface), API, and Verification Portal, complemented by specialized tools including OTS Navigator for file verification, Rolling Timestamps for continuous video/data stream integrity, Email Timestamping for secure email workflows, and S3 Bucket Replication for automated cloud storage timestamping. The suite is built on open protocols (OpenTimestamps) and the Bitcoin Timechain, enabling trustless verification without relying on centralized authorities.
Differentiator
Problem solved
Functional benefit
Products and services
- Simple Proof Verification Console Web-based console that lets government and enterprise users create, manage, and review Bitcoin-anchored document proofs and verification workflows.
- Simple Proof API Developer API that enables programmatic submission of document hashes for Bitcoin timestamping and retrieval of tamper-evident proofs, targeted at enterprises and integrators.
- OTS Navigator Tool for navigating and inspecting OpenTimestamps proofs, helping users understand and audit the chain of attestations tied to a Bitcoin-anchored document.
- Rolling Timestamps Service that continuously anchors documents or document batches to Bitcoin at regular intervals, supporting ongoing audit trails rather than one-off proofs.
- Verification Portal Public-facing portal that allows any third party to independently verify the existence and integrity of documents anchored by Simple Proof, supporting transparency for elections and enterprise use cases.
- Email Timestamping Service that produces Bitcoin-anchored timestamps for emails, enabling tamper-evident records of email communications for compliance and dispute scenarios.
- S3 Bucket Replication Timestamping Integration that timestamps objects replicated to Amazon S3 buckets, providing tamper-evident records of stored enterprise data without changing existing storage workflows.
Quantifiable outcome
- Full implementation completed in one week for Screven County, Georgia
- +3 more outcomes
Companies that use Simple Proof
Customer profileNamed customers6 records
Segments3 records
Ideal customer profiles2 records
Simple Proof technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration2 records
Feature7 records
Simple Proof partnerships and signals
Strategic signalPartnerships
Five partnerships are on record, tiered core.
- El Salvador Ministry of Foreign AffairscoreOfficial partnership to register government documents on the Bitcoin blockchain. Enables the ministry to create immutable, publicly verifiable records of official documents with verified records accessible through dedicated government portals.
- El Salvador Ministry of EnvironmentcoreOfficial partnership to protect government records using Bitcoin blockchain technology. Both ministries can register official documents on-chain, positioning El Salvador as a global reference for blockchain use in government information management.
- Amazon Web Services (AWS)coreAWS Qualified Software partner with native S3 integration. Simple Proof is available on AWS Marketplace and validated for leveraging AWS's resiliency, scalability, and security infrastructure. Automated timestamping of S3 bucket objects.
- OpenTimestampscoreBuilt on the OpenTimestamps open-source protocol for cryptographic timestamping. The protocol enables efficient aggregation of timestamps using Merkle trees, reducing cost and enabling trustless verification. Simple Proof is a commercial implementation of this open standard.
- ONBTC (Oficina Nacional del Bitcoin) - El SalvadorcoreEl Salvador's National Bitcoin Office collaborated with Simple Proof on the government document timestamping initiative, building on previous work with CUBO+ graduation certificates.
Scale indicators6 records
Recent moves6 records
Expansion highlights5 records
Simple Proof competitors and assessment
Company assessmentDirect peers
- OriginStamp: Provides blockchain-based timestamping services for documents by anchoring cryptographic hashes to public blockchains, using a model functionally similar to Simple Proof's Bitcoin-anchored attestation service.
- Blocknotary: Offers blockchain-based notarization and timestamping services for documents, directly competing with Simple Proof in the trustless document attestation and verification space.
- Stamping.io: Provides blockchain timestamping and certification for documents using Bitcoin and other blockchains, directly overlapping with Simple Proof's core timestamping service and target use cases.
- Signatura: Blockchain-based digital signature and document verification service targeting legal, real estate, and compliance use cases comparable to Simple Proof's document attestation offerings.
Others
- OpenTimestamps: Open-source protocol that Simple Proof commercializes; provides the foundational Merkle-tree-based timestamping infrastructure against Bitcoin. Comparable as the underlying technology stack rather than a direct competitor.
Broad incumbents
- Chainlink Proof of Reserve: Provides blockchain-based attestation and oracle services; while focused on crypto reserves today, its oracle network could expand into general document/data attestation use cases comparable to Simple Proof.
- Microsoft Azure Confidential Ledger: Enterprise blockchain ledger service offering tamper-proof record-keeping for regulated industries and government, with similar integrity guarantees and overlapping enterprise/government buyer personas as Simple Proof.
- Amazon QLDB: AWS-managed ledger database providing immutable, cryptographically verifiable transaction logs. As a native AWS service, it competes for enterprise record-integrity workloads, especially given Simple Proof's own AWS Marketplace presence.
- IBM Blockchain: Enterprise blockchain platform offering document provenance and tamper-evident record solutions across industries; competes for the same government and enterprise compliance buyers Simple Proof targets.
Emerging players
- Verifiable: Credentialing and verification platform using cryptographic proofs for healthcare and compliance; comparable in the broader verifiable-credentials ecosystem though focused on credentials rather than document timestamping.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
Simple Proof social profiles
Digital presenceSimple Proof financial estimates
Financial estimateRevenue estimate
Valuation estimate
Simple Proof leadership team
Management profileNumber of profiles
Profiles3 records
Simple Proof funding detail
Funding detailFunding overview
Funding rounds1 record
Investors2 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Simple Proof 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 Simple Proof
What does Simple Proof do?
Simple Proof provides Bitcoin-anchored document timestamping and verification services that allow governments and enterprises to create tamper-evident, independently auditable proofs of document existence and integrity. The company combines cryptographic hashing with the OpenTimestamps protocol to anchor document fingerprints to the Bitcoin blockchain, producing low-cost, permanent proof-of-existence records usable for election auditing, compliance, and enterprise document workflows.
Is Simple Proof a public or private company?
Simple Proof is a private company. It is classified as venture growth investor backed and is currently operating.
When was Simple Proof founded?
Simple Proof was founded in 2023. It employs 1 to 10 people.
Where is Simple Proof based?
Simple Proof is headquartered in Guatemala City, Guatemala, in the Latin America region.
How does Simple Proof make money?
Three revenue lines are on record. Subscription-based Timestamping Service is the primary driver. The others are enterprise & Government Contracts and API & Integration Fees.
Who are Simple Proof's main competitors?
Direct peers on record are OriginStamp, Blocknotary, Stamping.io and Signatura. OpenTimestamps is listed as an others. Broad incumbents are Chainlink Proof of Reserve, Microsoft Azure Confidential Ledger, Amazon QLDB and IBM Blockchain. Verifiable is listed as an emerging player.
Does Simple Proof have an API?
Yes. Public API that provides organizations with a mechanism to uphold information integrity by leveraging blockchain timestamping. Developers can submit hexadecimal hash strings of files for verification and timestamping. Authenticated via x-access-token header. Developer documentation is at docs.simpleproof.com/reference/intro/getting-started.
What industry is Simple Proof in?
Simple Proof's product category is Blockchain Document Timestamping and Verification. Its primary akta.pro industry code is FSAPAJAH, Proof of Reserves, Attestations & Custody Assurance, with a secondary code of FSADALAK, Proof of Reserves, Attestations & On-Chain Audit/Assurance. Its NAICS code is 522320 and its SIC code is 6199.