Witness Chain Watchtowers

The first line of defense for rollups

The Sentinels. Explore our 3 services

Rollup Watchtowers

Unlock trust-free, crypto-economically secure, incentive-compatible pool of de-centralized watchtowers for your rollups.

DePIN Watchtowers

Verify bandwidth and location with a de-centralized watchtower pool and a trust-free proof system for your infrastructure validator network.

AI Watchtowers

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Watchtower Features

Trustfree
Incentive compatible and crypto secure Proof of Diligence (PoD) to make sure watchtowers are working in the happy path. Watchtowers mine PoD bounties and get rewarded for it to prove their diligence.
Decentralized
Network driven Proof of Location to establish physical decentralization of watchtowers. Verify their locations to ensure that they are spread across multiple countries.
Programmable
Flexible SLAs to scale the number of watchtowers as the vulnerable assets on rollups evolve. Perfect for getting security at the outset and programmatically going off the training wheels.

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Trustfree

Incentive compatible and crypto secure Proof of Diligence (PoD) to make sure watchtowers are working in the happy path. Watchtowers mine PoD bounties and get rewarded for it to prove their diligence.

Decentralized

Network driven Proof of Location to establish physical decentralization of watchtowers. Verify their locations to ensure that they are spread across multiple countries.

Programmable

Flexible SLAs to scale the number of watchtowers as the vulnerable assets on rollups evolve. Perfect for getting security at the outset and programmatically going off the training wheels.

Secured by Ethereum trust via EigenLayer

Our watchtowers are secured by Ethereum trust using EigenLayer’s restaking contract for staking and slashing. Rollups get Ethereum security and Stakers get to participate in the booming L2 economy.

How can you participate with us

Node operators

Host watchtowers and earn rewards while securing the L2 ecosystem

Stakers

Provide Eth stake through EL for node operators and participate in L2 economy

Rollups

DApp chains and rollups can avail our watchtower service using a simple SLA contract

Developers

We plan to make our watchtowers programmable where others can gainfully utilize them for innovative applications such as quick finality and insurance for bridges. Reach out to us if you want to start building early.

Publications

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Witness Chain WatchTower: The First Line of Defense for Rollups

A short note

Witness Chain Watchtowers serve as the first line of defense for rollups, offering trust-free, decentralized, and programmable security. These watchtowers provide Ethereum trust, verify geolocation, and adapt to the value of vulnerable transactions.

A high-level description of proofs of bandwidth

A short note

Witness Chain provides a Proof of bandwidth (PoB) system, namely a proof system used to establish trust in decentralized wireless networks.

Proof of Service: Two-sided Measurements

ACM HotNets 2022 paper

Applying two sided measurements to enable decentralized slicing marketplace and contract-free roaming

Proof of Backhaul: Decentralized Speed Tests for Backhaul

Scientific Paper

A decentralised speed-test which can be used by a “payer” to determine the backhaul capacity of a “prover” with the help of a pool of “challengers” who send the challenge traffic to the prover.