Chainstack's APIs and software are used by thousands of businesses, large and small, to build, scale, and maintain blockchain applications. To ensure your security and control, Chainstack's APIs offer secure node connections and key security best practices. Invite other members to join your network and deploy their infrastructure using simple network management tools. You can build and deploy the blockchain protocol that suits your needs. The protocol will never be updated or modified again. Chainstack's managed services for blockchain make it easy to launch, join, and scale decentralized networks. You can now safely experiment with enterprise-grade tools and services and then run production. Continuously monitor and provision your resources.
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The sovereign AI that turns every answer into lasting expertise.
Cut response times by up to 90%. Optivalue.ai automates information discovery and drafting, freeing experts for the high-impact personalization that wins bids. It acts as an expert librarian for your knowledge base: submit a questionnaire — RFP, audit, security or compliance — and get a complete, source-verified draft in minutes.
Every answer is built on 89 Domain-Specific Language Models specialized by function and industry, not a generic LLM. Each answer carries a 0-100 confidence score and precise source citations (document, page, timestamp) for full traceability. When no source supports an answer, Optivalue.ai says "I don't know" rather than hallucinate. You don't just answer correctly — you prove it.
It's an engine of progress for your organization. Optivalue.ai runs a gap analysis to identify weaknesses in your documentation. Following the recommendations strengthens your internal documents and builds lasting expertise across the organization.
Your data stays yours: a private AI per client, never shared, deployed on-premise or in a sovereign cloud. Enterprise-grade security, compliant with GDPR, ISO 27001, HIPAA, SOC 2 and FedRAMP. All plans include unlimited users and unlimited projects. Start your 14-day free trial — no credit card, no commitment.
Trusted by L'Oréal, Stellantis, Thales Alenia Space, Exaion (EDF Group), Equans and Mango. Winner of the European Sovereignty Prize 2026 (AI category).
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Blocknotary
Blockchain technology offers timestamps for media files, providing assurances of ownership, integrity, and existence on mobile devices. BlockNotary Timestamp serves to notarize various media files, producing a publicly verifiable receipt that confirms their origin, timestamp, authenticity, and integrity while keeping the content private. This tool is beneficial for digital attribution, establishing proof of existence, possessing prior knowledge, maintaining integrity, and confirming authenticity. By utilizing OpenTimestamps (OTS), the InterPlanetary File System (IPFS), and public blockchains like Bitcoin or Ethereum, it generates entirely distributed proofs. The receipts created are not only independently verifiable but also machine-readable, ensuring their reliability. To utilize this service, simply upload your media file through the app, which will securely store it within a distributed file system safeguarded by blockchain technology, enhancing both security and accessibility. This innovation empowers users to maintain a trustworthy record of their digital assets.
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OORT DataHub
Our decentralized platform streamlines AI data collection and labeling through a worldwide contributor network. By combining crowdsourcing with blockchain technology, we deliver high-quality, traceable datasets.
Platform Highlights:
Worldwide Collection: Tap into global contributors for comprehensive data gathering
Blockchain Security: Every contribution tracked and verified on-chain
Quality Focus: Expert validation ensures exceptional data standards
Platform Benefits:
Rapid scaling of data collection
Complete data providence tracking
Validated datasets ready for AI use
Cost-efficient global operations
Flexible contributor network
How It Works:
Define Your Needs: Create your data collection task
Community Activation: Global contributors notified and start gathering data
Quality Control: Human verification layer validates all contributions
Sample Review: Get dataset sample for approval
Full Delivery: Complete dataset delivered once approved
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