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
What is a blockchain indexer?
Learn about the role of indexers and how they help you query onchain data.
Migrating from Sim to Alchemy's Data APIs
Dune is retiring the Sim API on August 1, 2026. Alchemy's Data APIs cover the most common Sim migration paths across EVM chains and Solana.
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.
