head to head/Productivity & Utilities
Proxae vs TariffsChart
Neck and neck on boosts. Profiles, pricing and deals below.
Proxae
Certify your ideas in the Bitcoin blockchain
community boosts
⚡ 0
pricing
Freemium
what it is
Prove you had it first. Proxae certifies your texts, ideas and files with a Bitcoin blockchain timestamp. Verifiable forever, independently — no trust required.
TariffsChart
US Import Duty Stack & Landed Cost Calculator 2026
community boosts
⚡ 0
pricing
Paid
what it is
Enter an HTS code and origin to resolve source-backed US duty layers, expose unresolved Chapter 99 and trade-remedy questions, and carry the result into a landed-cost model.