Read ordered new, grade_changed and rescanned events with previous grades and scores. Default 200, maximum 1000; signed watermark cursors. History retains 30 days or 50000 events; expired cursors return 410. Costs 0.01 USDC per page on Base or Solana. Use a fresh idempotency key per page; retain the original body and proof for exact recovery.
| Network | Scheme | Amount | Pay To |
|---|---|---|---|
| solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp | exact | 0.01 tokens | 9mMDrH...USRc |
| Base | exact | $0.01 USDC | 0xF6c6...07c5 |