Data, security, and privacy
Blockchain-Ads handles sensitive advertiser data for crypto exchanges, iGaming operators, and finance apps running campaigns that use wallet, transaction, and behavioral signals. This section covers what the platform collects, how that data is technically protected, and what you are responsible for as the advertiser running on it.
What the platform collects, and why
Your account. Your business details, campaign data, and reporting are visible to the members of your organization. Access is controlled through Settings > My Profile > People and sharing, so removing a member removes their access. API keys are credentials: anyone holding one can reach your account data through the API, so rotate them periodically and delete keys once they are retired.
Advertising data. Three kinds of data feed a campaign:
- Audience data, built from interest, behavior, and on-chain signals. Campaigns target audience segments, not identified individuals.
- Conversion data you send back, used to attribute results and optimize delivery toward your objective.
- On-chain data, public blockchain activity, screened across supported chains.
How data reaches the platform. Blockchain-Ads does not accept raw personal identifiers. Data arrives as one-way SHA-256 hashes, through one of three paths. You can upload a CSV of hashed emails or device IDs. You can sync in real time from your own CRM or customer data platform through the API. Or a lightweight tracking script can hash signals in the visitor's browser before they reach Blockchain-Ads at all.
Matching happens inside Blockchain-Ads' own identity graph, not through third-party data brokers. A hashed identifier is linked to an anonymous ID, and if that visitor connects a wallet through a NEXUS partner touchpoint, the wallet address is mapped to the same anonymous ID. When an ad request comes in, the system checks whether that anonymous ID falls into one of your target segments, for example a wallet-value tier or a chain-activity segment. The ad is served without exposing the wallet address or email to the site showing it.
This matching runs on Blockchain-Ads' own stack. Partisia Blockchain provides the privacy-preserving computation layer for the zero-knowledge step below and does not have access to the underlying data.
How your data is protected
- Hashing. Every identifier is salted before hashing, which blocks rainbow-table attacks and means Blockchain-Ads never stores a plain email, device ID, or wallet address.
- Zero-knowledge storage. Hashed data is stored using zero-knowledge proof techniques, so it stays computationally infeasible to reverse even in a breach.
- Encryption. Data in transit runs over TLS 1.3. Data at rest is encrypted with AES-256, with keys held in a segregated hardware security module.
- Aggregated reporting. Your dashboard shows aggregated results only. A segment with fewer than roughly 100 users is suppressed, so no report can single out an individual.
- Retention. Campaign-specific audience data is purged 30 days after the campaign ends. When a visitor opts out anywhere in the Blockchain-Ads ecosystem, their hash is removed everywhere within 24 hours.
- Purpose limitation. Data you provide is used to run your campaigns only. It is never used to build lookalike audiences for other advertisers, and it is never sold to data enrichment providers.
Your obligations as an advertiser
- Maintain a clear privacy policy on your landing pages.
- Respect opt-outs and regional data law, including GDPR and CCPA.
- Collect first-party lists with consent before uploading them.
- Pass accurate tracking and postbacks.
These are conditions of running on the platform. See Advertising policies.
