WITNESS Protocol
Witness is a trustless timestamping protocol that proves when offchain data was last modified without paying gas per write.
What is WITNESS Protocol?
Witness lets developers and apps commit to data hashes off-chain and prove the exact moment those hashes existed, anchoring batches into Arbitrum and Ethereum. Teams use Witness to timestamp legal documents, AI outputs, and software releases, getting cryptographic provenance without paying per-record gas fees.
Web3 dapps and developer tools related to WITNESS Protocol
Discover blockchain applications that are frequently used with WITNESS Protocol.
BlockVision
Footprint Analytics
Envio
Uniblock
Developer resources from Alchemy
The best blockchain APIs for building onchain applications in 2025
Discover the blockchain API landscape in 2025 and find the best provider for your app.
What are agent payments? How AI agents pay for APIs, data, and compute
Agent payments let AI agents pay for what they need — APIs, data, compute — autonomously and within limits. Learn how they work and why they matter for real agentic workflows.
Reliability at scale: Degen Chain's Alchemy success story
How migrating to our Rollups-as-a-Service platform improves rollup infrastructure reliability, engineering support, and user trust.
WITNESS Protocol alternatives
Explore web3 competitors and apps like WITNESS Protocol.
Mobula
Numbers Protocol
Inveniam
KhorusApp store listings are independently reviewed and written by Alchemy using a combination of inbound submissions, editorial research, public project sources, and third-party directories, including ecosystem data from The Grid under the Open Database License, DefiLlama, DappRadar, Reown, and chain ecosystem pages.
