Transparent history is gathered by skip-paging listtransactions. The
underlying list can shift between the per-page RPCs - a new
transaction arriving pushes one page's tail into the next page's head
- so a row could be collected twice and show up as a duplicate in
History.
- Pages are now de-duplicated on the daemon's stable per-output
identity: txid, send/non-send class, and vout. Keying on the class
rather than the exact category means a coinbase that matures
(immature to generate) between two fetches is still recognised as
the same row; keeping vout means two equal-value outputs of one
transaction stay distinct. No real transaction row is dropped or
duplicated.
- Rows with no txid or vout ("move") are never keyed and pass through
(they are dropped downstream anyway), so the de-dup fails open.
- The raw page size still drives the stop condition and the next-run
row hint, independent of how many rows were unique.
Tests cover a shifted page whose head repeats the prior page's last
row (dropped), a sibling output of the same tx (kept), and an
un-keyable row (kept).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>