adChain Registry

• Name: adChain Registry
• URL: https://www.adtoken.com/blog/introducing-the-adchain-registry
• Tags: ethereum-ecosystem
• Category: token-curated registry / challengeable registry / ad-tech verification infrastructure / historical list-admission mechanism
• Summary: adChain Registry is an early token-curated-registry baseline. The useful part is not ad-tech branding; it is the exposed control surface around application stake, matched challenges, PLCR voting, deposit redistribution, and live parameter governance.
• What it does:
  • Maintains an onchain registry of publisher domains meant to represent non-fraudulent ad inventory sources
  • Requires applicants to stake adToken (ADT) to apply for inclusion in the registry
  • Lets challengers contest an application by matching the applicant’s deposit, which triggers a token-holder vote
  • Uses token-weighted Partial Lock Commit Reveal (PLCR) voting so votes are committed and revealed in separate phases
  • Redistributes part of the losing side’s deposit to the winning applicant, challenger, and winning-side voters
  • Allows already-whitelisted domains to be rechallenged and allows registry parameters to be reparameterized through governance votes
  • Exposes a simple isWhitelisted()-style verification surface so downstream ad systems can check whether a domain is listed
• Key claims:
  • The main reason to keep adChain in the active corpus is that it makes the classic token-curated-registry control plane concrete. The important layers are not just a list plus a token; they are application staking, challenge rights, hidden-ballot voting, reward redistribution, and live parameter governance.
  • adChain is especially useful as a lower-bound comparison for later challengeable registries because it makes the consumer / candidate / token-holder triad explicit. Advertisers consume the list, publishers want admission, and token holders are paid to curate quality because registry quality is supposed to drive token value.
  • The registry’s whitelist deposits are not just a spam-prevention fee. In the contract docs they persist after admission and interact with rechallenges and parameter changes, which means governance over minDeposit can indirectly change who can remain listed.
  • Reparameterization is one of the most important retained insights. adChain did not freeze registry rules at launch; it let token holders vote on changing parameters like deposit requirements or timing windows. That makes it a better comparison point for later registries than a static whitelist would be.
  • The PLCR voting link matters historically because adChain explicitly imported its commit-reveal voting design from Colony’s partial-lock voting work. That helps connect early registry curation to broader Ethereum-era experiments in token-based governance mechanics.
  • The durable governance insight is that supposedly open curation still centralizes around parameter setters, UI operators, challenger sophistication, and the social layer that decides what counts as a valid challenge. The open list frame can hide those practical chokepoints.
• Whitepaper: See ../whitepapers/adchain-registry-whitepaper.pdf and ../whitepapers/adchain-registry-primary-sources-2026-05-12.md.
• Sources:
  • https://www.adtoken.com/blog/introducing-the-adchain-registry
  • https://www.adtoken.com/blog/the-adchain-registry-eli5
  • https://adtoken.com/uploads/white-paper.pdf
  • https://github.com/AdChain/AdChainRegistry
  • https://raw.githubusercontent.com/AdChain/AdChainRegistry/master/README.md

Internal linkages

• Best challengeable-registry follow-on: kleros-curate.
• Non-challengeable publisher baseline: token-lists.

Control surface

• The leverage sits in minimum-deposit policy, who is willing and able to challenge, PLCR voter participation, and reparameterization of timing and stake requirements.

• Read adChain as early challenged-registry governance plumbing, not as a durable ad-tech operating company.

• Last reviewed: 2026-06-12 UTC