BestSign

What BestSign does

BestSign (上上签) is a Hangzhou-headquartered electronic signature and contract lifecycle management SaaS platform founded in August 2014, operated by Hangzhou Shangshangqian Network Technology Co., Ltd. (杭州上上签网络科技有限公司). The company provides electronic contract signing, full lifecycle management, blockchain evidence preservation, and AI-powered contract intelligence through a multi-tier SaaS offering (Standard free tier, Professional at ¥100,000/year, Flagship at ¥250,000/year) plus a Tool/API version (TPS≥2000) and the Hubble AI product family. As of December 2025, the platform serves 6.42 million enterprise customers, 371 million individual users, and has processed 19.6 billion contracts, with 222 Fortune 500 companies and 131 SOE/central enterprise paying customers on the platform.

The underlying technology stack includes proprietary three-level key management, multi-CA intelligent routing (99.99% service availability), self-developed blockchain supporting up to 300 million transactions per day, and Hubble AI built on large language models that has passed CAC algorithm filing. The platform has received multiple international certifications (ISO 9001, 22301, 27001, 27018, 38505-1) and Chinese regulatory certifications (MIIT Trusted Cloud, Level 3 Cybersecurity Protection, Commercial Cryptography Certification), with 405 courts and 5 arbitration committees recognizing the legal validity of BestSign contracts.

BestSign generates revenue through a hybrid model combining SaaS subscriptions, per-contract usage fees (with volume discounts at 1,500+ contracts), AI feature add-ons (¥1.9-4,800 per action), and value-added services. The company employs a multi-channel go-to-market including enterprise field sales (for large accounts), product-led growth with self-serve API integration (for SMBs and developers), and a partner referral program. It operates eight regional offices across China and maintains flagship partnerships with Apple, Oracle, AWS, Huawei, AntChain, Microsoft, and SAP. The company has raised approximately $78M USD across six funding rounds through 2018, led by Tiger Global, 5Y Capital, Matrix Partners China, DCM, and Shunwei Capital, and completed three strategic acquisitions (QuickSign in 2017, Zhongqian in 2019, Yunhetong in 2021) to consolidate the e-signature market.

Name

BestSign

Legal name

杭州尚尚签网络科技有限公司

Website

https://bestsign.cn

Company type

Private

Founded year

2014

Operating status

Operating

Headcount range

251–500 employees

Short description

BestSign (上上签) is a Hangzhou-headquartered electronic signature and contract lifecycle management SaaS platform serving 6.42 million enterprise customers and 371 million individual users across 12+ industries, offering multi-tier subscriptions, API integration, blockchain evidence preservation, and the Hubble AI contract intelligence product family.

Ownership category

akta.pro rank

Headquarters

HQ city

Hangzhou

HQ country

China

HQ region

Asia

Offices8 records

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Revenue model

1. SaaS Subscription (Platform Subscription): Annual subscription fees for platform tiers: Standard version (free, pay-per-use), Professional version (100,000 yuan/year), Flagship version (250,000 yuan/year), and Tool version (API integration). Revenue from software service fees billed annually or per contract package.
2. Contract Usage Packages: Pay-per-contract packages for both B2C (individual) and B2B (enterprise) contracts. Volume discounts available: 1,500+ contracts at 3.8 yuan/contract for individual, 12.51 yuan/contract for enterprise. Contract packages valid for 12 months.
3. AI Feature Add-ons: AI-powered premium features including risk assessment (9.9 yuan/contract), contract comparison (3.9-400 yuan/packages), document translation (40-1500 yuan), AI interpretation (10-39.9 yuan), AI legal assistant (9.9-19.9 yuan), and agreement extraction (1.9-14.9 yuan).
4. Value-Added Services: Premium features including seal edge watermark (598 yuan/year), template authorization (1098 yuan/year), contract approval workflow (1598 yuan/year), and handwritten signature recognition (1598 yuan/year).

Pricing tiers

Go-to-market motion3 records

Distribution channels6 records

Marketing channels10 records

Core offering

BestSign operates a cloud-based electronic signature and contract full-lifecycle management SaaS platform that enables enterprises to send, sign, verify, store, and manage contracts end-to-end across Web, mobile, and API channels. The platform combines multi-CA digital certificate management, blockchain evidence preservation, multi-cloud intelligent storage, and an AI-powered contract intelligence assistant (Hubble) to deliver legally valid electronic contracts with full audit trails. It serves enterprise customers across retail, manufacturing, finance, automotive, healthcare, logistics, and SOE segments with tiered subscriptions (Standard, Professional, Flagship) plus API integration.

Product overview

BestSign (上上签) offers a unified electronic signature and contract lifecycle management SaaS platform comprising three product series and multiple AI-powered add-ons. The core product line includes the 签约管理系列 (Contract Management Series) — a multi-tier SaaS platform available in Standard, Professional, and Flagship tiers for enterprises of all sizes, providing complete contract lifecycle management (发-收-验-签-存-管) across all terminals. The 签约工具系列 (Contract Tool Series) provides open API interfaces for deep system integration and customization targeting enterprise developers and internet companies. The 签约智能产品Hubble is the AI-powered signing intelligent advisor powered by large language models, enabling contract Q&A, risk detection, translation, and autonomous contract operations. Supporting tools include blockchain evidence storage, online verification, government HR integrations (杭州人社), notarization/arbitration services, and a contract cost calculator. The AI add-on portfolio includes 智签无忧 for risk detection, AI法务 for legal analysis, AI律师 for risk assessment, 合同比对 for comparison, 合同翻译 for translation, 协议提取 for data extraction, and AI解读 for summarization. Pricing spans from free Standard (pay-per-use at ¥4.36-6.00/contract) to ¥100,000/year Professional, ¥250,000/year Flagship, and custom Tool API pricing. The platform serves 642+ enterprise customers and 371 million+ individual users as of December 2025.

Differentiator

Problem solved

Functional benefit

Brands

• Hubble: AI-powered contract intelligence product combining large language models with electronic signing scenarios, enabling contract summarization, risk identification, and document Q&A.

Products and services

• Electronic Signing (电子签约) Core electronic signature service enabling online sending, signing, and tracking of contracts with legal validity. Provides multi-factor identity verification (face/SMS), digital certificates with timestamps, document encryption storage, and achieves 95% reduction in contract cycle (from 3 days to 3 minutes). Target users: enterprises across all industries requiring legally compliant e-signatures.
• Contract Full Lifecycle Management (合同全生命周期管理) Automated contract workflow management with customizable signing processes, multi-business-line management for group enterprises, group-level permission controls for stamps/roles/templates, and API-based system integration. Supports vertical business line management with data isolation for independent operations across business units. Target users: mid-market and large enterprise groups requiring structured contract workflows.
• Industry Chain Collaboration (产业链协同) Platform connecting enterprise upstream and downstream partners into a full-industry signing network. Features partner archive management, qualification verification, dynamic data management, scheduled annual reviews, and real-time data collection for cross-organization collaboration. Target users: large enterprises with extensive supply chains, dealer networks, and partner ecosystems.
• Hubble AI Contract Advisor (Hubble哈勃) AI-powered signing intelligent product combining large language models with electronic signature business scenarios. Features include contract Q&A, summarization, risk identification, Chinese-English translation, contract comparison, and autonomous contract retrieval and sending via conversational interface. Available in Experience (free), Personal, and Team editions. Target users: enterprises and professionals needing AI-augmented contract analysis.
• Contract Tool Series / Tool Version API (签约工具系列) Open API interfaces and embedded signing capabilities for enterprises needing deep customization and system integration. Offers face signing, auto-signing, contract download, data statistics, file verification, and supports TPS≥2000 for high-traffic enterprise deployments. Target users: developers, system integrators, and internet companies building signing functionality into their own products.
• Notarization and Arbitration (公证仲裁) Comprehensive legal protection services including third-party evidence certification, online notarization by cooperating notary offices, and network arbitration through cooperating arbitration committees. Creates complete traceable evidence chain for signed contracts. Recognized by 523 courts and 5 arbitration committees as of 2024. Target users: enterprises needing judicial-grade legal validity for contracts.
• Blockchain Evidence Query (区块链存证查询) Online query tool for blockchain-stored evidence of contracts signed through the BestSign platform. Users upload PDF contract files to verify blockchain deposit records including blockchain name, unique deposit ID, deposit hash, notary deposit ID, and timestamp. Target users: enterprises and counterparties requiring tamper-proof contract evidence verification.
• Hangzhou HR Contract Aggregation (杭州人社合同汇聚) Government-enterprise cooperation channel connecting BestSign platform contracts to Hangzhou HR Bureau's Hangyunqian (杭云签) system. Enables enterprises to aggregate contracts to the government system for streamlined HR online business processing. Target users: enterprises operating in Hangzhou with HR contract compliance needs.

Quantifiable outcome

• Contract signing cycle reduced 95% (from 3 days to 3 minutes, 10 steps to 2 steps)
• +8 more outcomes

Named customers25 records

Segments14 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration10 records

AI capability8 records

Feature6 records

Partnerships

24 partnerships are on record, tiered core and flagship.

• Chinasoft International (中软国际)coreImplementation/ SI/ Consulting Partner · 1 September 2020System integration partnership. Professional implementation services for enterprise customers.
• AWS (Amazon Web Services)flagshipTechnology or Integration · 1 June 2020Multi-cloud deployment with AWS for global enterprise customers. Strategic cloud infrastructure partnership with world's leading cloud provider.
• Baidu XuperChain (百度超级链)coreTechnology or Integration · 1 April 2020Additional blockchain partner for decentralized evidence preservation. Multi-blockchain strategy for judicial chain verification.
• SAPcoreTechnology or Integration · 1 January 2020Enterprise system integration with SAP's ERP and HR solutions. Global enterprise customer support through SAP ecosystem.
• China Electronic Cloud (中国电子)coreTechnology or Integration · 1 January 2020Product compatibility certification with China Electronics cloud solutions. Domestic cloud deployment support.
• Huawei (华为)flagshipTechnology or Integration · 1 September 2019Strategic partnership for domestic cloud and enterprise solutions. National champion tech company cooperation.
• China Aerospace Science and Industry (航天科工)coreStrategic or Co-development Partner · 1 September 2019Strategic partnership for defense and enterprise digitalization. December 2020 expanded to deeper strategic cooperation.
• Zhongchuangzhongjian (中创中间件)coreTechnology or Integration · 1 July 2019Integration partnership for enterprise system interoperability. Middleware and integration support for large enterprise deployments.
• Yonyou (用友)coreTechnology or Integration · 1 April 2019Integration with Yonyou's cloud ERP and HR solutions. Enterprise customers can access electronic signature directly from Yonyou systems.
• Kingdee (金蝶)coreTechnology or Integration · 1 April 2019Integration with Kingdee's cloud ERP solutions. Seamless contract management for Kingdee enterprise customers.
• Hangzhou Internet Court (杭州互联网法院)coreStrategic or Co-development Partner · 1 April 2019Direct integration with Hangzhou Internet Court's litigation platform. Online dispute resolution and judicial chain verification.
• Beisen (北森)coreTechnology or Integration · 1 January 2019Strategic partnership for HR system integration. Electronic signature services for HR workflows including onboarding and contracts.
• Xiaoshouyi (销售易)coreTechnology or Integration · 1 January 2019CRM integration partnership. Sales contract management and customer agreement signing within CRM workflows.
• AntChain (蚂蚁区块链)flagshipTechnology or Integration · 1 November 2018Blockchain evidence preservation partnership. Self-developed blockchain electronic contract storage service supporting up to 300 million transactions per day.
• OracleflagshipStrategic or Co-development Partner · 1 October 2018Global top enterprise software company. Strategic partnership for enterprise contract management integration with Oracle's ERP and HCM solutions.
• AppleflagshipStrategic or Co-development Partner · 1 August 2018Official authorized mobile enterprise partner since March 2018.入驻Apple企业解决方案中心,率先成为Apple大中华区移动合作伙伴. Deep integration with iOS and Apple ecosystem.
• Trusted Blockchain Alliance (可信区块链联盟)coreStrategic or Co-development Partner · 1 June 2018Member of Trusted Blockchain Alliance led by China Academy of Information and Communications Technology. Contributed to trusted blockchain evaluation methods.
• China Financial Certification Authority (中国金融认证中心)flagshipTechnology or Integration · 1 May 2018CA (Certificate Authority) partner for digital certificate issuance. Legal identity verification and digital certificate services for financial sector customers.
• Zhejiang CA (浙江CA)coreTechnology or Integration · 1 May 2018Regional CA partner for digital certificate services. Multi-CA strategy ensuring business continuity.
• Shanghai Oriental Notary Office (上海市东方公证处)flagshipStrategic or Co-development Partner · 1 January 2018Real-time notarization partnership. Every signing process automatically connected to notary services for evidence preservation.
• Qiantang Notary Office Zhejiang (浙江省杭州市钱塘公证处)coreStrategic or Co-development Partner · 1 January 2018Regional notarization partner for eastern China. Additional evidence preservation and notarization services.
• Internet Finance Association of China (中国互联网金融协会)coreStrategic or Co-development Partner · 1 August 2017Participated in drafting 《互联网金融个体网络借贷电子合同安全规范》. Industry standard-setting for internet finance electronic contracts.
• Microsoft / OfficeflagshipTechnology or Integration · 1 October 2016Strategic partnership enabling integration with Microsoft Office products. WPS partnership also for document processing integration.
• Kingsoft WPS (金山办公)coreTechnology or Integration · 1 August 2016Document processing integration with WPS Office. Seamless document upload and signing capabilities.

Scale indicators16 records

Recent moves8 records

Expansion highlights8 records

Direct peers

• 法大大 (Fadada): Fadada is one of BestSign's two main direct competitors in the Chinese electronic signature and contract lifecycle management market, offering comparable SaaS products targeting enterprises and serving similar industries (HR, finance, real estate). Closely overlapping in product, customer base, and pricing model.
• e签宝 (eSign): eSign is the other leading direct competitor in China's electronic signature SaaS market, providing electronic contract and contract lifecycle management services with strong government and SOE relationships. Highly comparable to BestSign in product scope, customer segments, and regulatory positioning.
• 契约锁 (Qiyuesuo): Qiyuesuo is a Chinese electronic signature and contract management SaaS provider with a focus on mid-market and enterprise customers. Overlaps with BestSign in product capabilities (electronic signature, contract lifecycle, API integration) and target segments.

Broad incumbents

• DocuSign: DocuSign is the global incumbent leader in electronic signature and contract lifecycle management, serving enterprise customers worldwide including multinationals operating in China. BestSign's foreign enterprise customers (J.P. Morgan, John Deere, Starbucks, Danone) typically also use DocuSign, making it a key competitor for global accounts.
• Adobe Acrobat Sign: Adobe Acrobat Sign is part of Adobe's broader Document Cloud and competes globally in the e-signature space, often bundled with PDF and enterprise content management. Comparable to BestSign for enterprise customers already standardized on Adobe's document ecosystem.
• Icertis: Icertis is an enterprise contract lifecycle management (CLM) platform that competes with BestSign's upper-tier offerings for large enterprises. Particularly relevant for BestSign's Fortune 500 and SOE customers that may already use or evaluate Icertis for contract intelligence.

Emerging players

• PandaDoc: PandaDoc is a document workflow and contract management platform popular with SMBs and mid-market companies globally. While not a direct e-signature pure-play, it competes in adjacent contract creation, e-signature, and CPQ workflows that overlap with BestSign's smaller-customer tier.
• Ironclad: Ironclad is a digital contracting platform that combines CLM with workflow automation and AI-powered contract analysis — closely paralleling BestSign's Hubble AI direction. Targets enterprise legal teams and overlaps with BestSign's flagship AI roadmap.
• Onit: Onit provides enterprise contract management and legal workflow software, with comparable CLM capabilities to BestSign's Professional and Flagship tiers. Targets similar enterprise legal and procurement buyers.

Regional players

• 众信签 (Zhongxinqian): Zhongxinqian is a regional electronic signature platform operating in China with focus on government and SOE segments — overlapping with BestSign's strong public-sector positioning and competing for similar state-affiliated customers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/bestsign

Compliance8 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries3 records

Funding overview

Funding rounds6 records

Investors6 records

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

M&A3 records

Investments

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

Frequently asked questions about BestSign