Include previous output information in blockHandler efficiently #400
Description
Previous output information in the blockHandler currently isn't available, and querying that information is not trivial, and can slow sync times from hours into days. Having access to this information can help solve these outstanding issues:
- Determining spent txids for non-standard p2sh (see Remove Redeem Script Classification Requirement from Script.isScriptHashIn() bitcore-lib#36 and Index input scripts addresses for non-standard P2SH #397)
- Determining the amount of change for an address (see Received balance incorrectly includes tx change #373)
- Cache ranges of block heights for a balance, making it possible to query the balance addresses with millions of transactions quickly
Edit: (additional information)
- Recording fees for statistics