LOGS ARE CLAIMS. PROOF IS VERIFIABLE.
Can you prove them?
SEALISON turns every AI interaction into a cryptographically verifiable record — designed to support Article 12-style tamper-evident record-keeping.
HOW IT WORKS
01
Capture
Your AI generates a response to a customer.
02
Hash
SHA-256 creates a unique fingerprint of the interaction.
03
Seal
Hash is signed with Ed25519 and linked in an append-only chain.
04
Verify
Verification runs client-side from the proof bundle. Public CLI verifier planned.
EU AI ACT · REGULATION 2024/1689
INDUSTRIES
AI is making customer-facing decisions. Here’s where cryptographic proof matters most.
LIVE DEMO
Paste an AI interaction, generate a proof, or verify one directly.
Cryptographic proof
SHA-256 sealed in an Ed25519-signed chain.
Tamper evidence
Any change produces a completely different hash.
Independent verification
Verify in your browser. Public CLI verifier planned for stronger independent verification.
Designed to support Article 12-style
Tamper-evident logging requirements.
WHEN THIS MATTERS
SEALISON is not for every AI use case. Here’s how to think about it.
▲ SEALISON WINS WHEN
You need to prove what your AI said later
You operate in regulated or high-liability environments
You cannot rely on internal logs alone
You care about integrity and external scrutiny
◌ SEALISON LOSES WHEN
You only need debugging logs
You fully trust your internal infrastructure
You optimize only for speed, not proof
You do not expect disputes, audits, or scrutiny
MARKET EDUCATION
Most teams have logs. Very few have proof.
Internal logs
Fast, cheap, useful for debugging.
Not verifiable externally
Tamper-evident logs
Append-only, audit trails.
Still requires trust in storage
Cryptographic proofs
SEALISON, Certificate Transparency, Sigstore.
Verifiable independently — no trust required
THE INSIGHT
Cryptography has existed for decades. Certificate Transparency, Sigstore, Sigsum — all used append-only signed logs long before AI.
What was missing: a way to expose it for AI outputs specifically. A browser-side verifier. A 6-month retention story. A proof format designed to support Article 12-style record-keeping.
That’s what SEALISON is.
PRICING
SEALISON is not a platform replacement. It is an evidence layer. Pricing should feel small relative to the risk it covers.
DEVELOPER / EVALUATION
Free
For technical evaluation
1 covered AI system
1,000 proofs / month
30-day retention
Browser verification
Or email us directly at [email protected]
PILOT
1,500 € / month
For teams validating verifiable evidence on regulated AI workflows
Up to 10 covered AI systems
100,000 proofs / month
6-month retention
Hash-only mode
Evidence export
Monthly cancellable
Price locked for 12 months if converted
Or email us directly at [email protected]
ENTERPRISE
Custom
For regulated environments
100+ covered AI systems
Custom retention
Custom deployment path
SLA
Dedicated support
Security / legal review
Or email us directly at [email protected]
Pricing is based on covered AI systems, not raw log volume. Proof quotas are included as technical limits.
Working with AI systems? We can show you how Sealison makes AI outputs verifiable. 10 minutes. You test it yourself.
Or email us directly at [email protected]