Certify your texts, ideas and files with a Bitcoin blockchain timestamp
Non-custodial cross-chain crypto swap and exchange router
Stage
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Founded
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Based in
ES
SG
Pricing model
Freemium
Free
Pricing
Free plan: €0, includes unlimited Bitcoin certification, shareable proof links, REST API, and 3 web page captures per day. Pro plan: €4.90/month, adds RFC 3161 timestamping, eIDAS qualified certificates, official PDF certificates, 20 web page captures per day, and identity verification.
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Key features
Bitcoin anchoring via OpenTimestamps protocol
SHA-256 fingerprint computed locally in browser
REST API for integration and automation
RFC 3161 qualified timestamps for European legal recognition
eIDAS-qualified PDF certificates from Sectigo
Web page capture and archiving
Optional identity verification via Stripe Identity
Webhook notifications for proof confirmation
Independent verification via opentimestamps.org
AES-256-GCM encryption for Pro stored content
Compare routes across multiple DEX and bridge aggregators for best pricing
Support for 70+ blockchain chains including EVM, Tron, Bitcoin, Solana and Sui
Non-custodial transactions signed directly in your wallet
Buy cryptocurrency with cash in 40+ currencies
Live settlement tracking from source to destination chain
No account signup or KYC required for swaps
What makes it different
No trusted third party required—proofs remain verifiable forever without Proxae
Original content never leaves your device—only cryptographic fingerprint is transmitted
Mathematically immutable—proof dates cannot be modified without invalidating Bitcoin blockchain
No account or KYC needed for swaps, only your wallet
Aggregates liquidity from multiple leading protocols for best rates
Proxae