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Goldsky Indexer & Transaction History (transactions_apiv2/)

The LearnWay Transaction Indexer (transactions_apiv2/) leverages Goldsky Subgraphs to listen to on-chain blocks and events emitted on Lisk L2, building a searchable historical ledger of all token transfers, XP earnings, and NFT mints.

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Indexing Pipeline Architecture

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Indexed Smart Contract Events

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Key Benefits of Dedicated Indexing

  1. Zero Load on Primary Core Database: Complex transaction history lookups, date-range filters, and pagination queries execute against the read-optimized Goldsky store without impacting course management or authentication throughput.
  2. Deterministic On-Chain Verification: Guarantees that wallet balance histories shown in the mobile client match exact on-chain cryptographic state.
  3. Sub-Second Indexing Latency: Goldsky pipelines process new Lisk L2 blocks in under 1 second, ensuring learners see their minted badges and claimed rewards immediately after transaction confirmation.