Gas Shark

Gas Shark needed a scalable paid acquisition channel to grow its user base, but conventional advertising platforms offered no viable path to reaching active on-chain users.

Four obstacles defined what that required:

• Platform restrictions: Google and Meta offer no compliant inventory for crypto-native tools targeting active DeFi users.
• Audience precision: Interest-based targeting cannot distinguish active Ethereum transactors from casual crypto observers.
• CPA efficiency: Early acquisition costs needed to fall substantially before the campaign could scale.
• Geo performance variance: User quality and conversion rates differed significantly across target regions.

Paid acquisition on Google and Meta was not a viable option. Both platforms restrict crypto tool advertising in Gas Shark's target markets. Interest-based alternatives could not reach users with verified on-chain behaviour. Gas Shark needed a network that could identify active Ethereum wallets and serve ads directly to users already paying gas fees.

Blockchain-Ads provided that through four capabilities:

• On-chain wallet targeting: Campaigns reached wallets with verified Ethereum transaction history, not interest proxies.
• Crypto publisher inventory: The network covered DeFi, trading, and Web3 content environments where Gas Shark's audience was already active.
• CPA-based optimisation: Campaigns were structured to optimise toward new user registrations from the first week.
• Geo flexibility: The platform allowed rapid reallocation of budget across regions based on live performance data.

• CPA reduced by 77%, from $190 in Phase 1 to $44.42 in Phase 3.
• 90% of total conversions were delivered in Phase 3 alone.
• Impressions: 1.5M+ delivered across five regions over 60 days.
• CTR: 3.4% blended across all display formats.
• CPC: $1.07 blended across the full campaign.

The campaign launched with broad geo coverage across Latin America, North America, Asia, and Africa. Display ads ran across crypto and DeFi publisher inventory.

Three creative angles ran simultaneously:

• A generic awareness angle directing users to GasHark.org.
• A pain-point angle asking users if they were tired of overpaying for gas fees.
• A savings-claim angle promising a 40% reduction in ETH gas fees.

CPA in this phase was $190 as the campaign gathered signal across segments and regions.

Data from Phase 1 identified Latin America and North America as the strongest-performing regions by conversion rate and user quality. Budget was reallocated away from underperforming geos. The pain-point and savings-claim creatives outperformed the generic awareness angle and were scaled. The generic angle was retired. CPA fell to $143 as targeting tightened around verified high-intent wallet segments.

The campaign concentrated spend on Latin America and North America with full budget behind the savings-claim creative. Retargeting layers re-engaged users who had clicked but not converted in earlier phases. The savings-claim angle, "Cut Your ETH Gas Fees by 40% with GasHark.org," drove the strongest deposit-equivalent conversion rates across both regions. CPA reached $44.42 in the final phase, with 90% of total conversions delivered in this period.