← Backfire tracking  ·  Congruence  ·  LDC from the first post
Instagram · captured October 17, 2026

Black hole sun

Every post on @latterdayavenger's Instagram grid, read with its owner: 334 posts. 307 are his own. 27 belong to 20 other accounts, 5 of them TB's.

metadata only · Instagram's own post data · the full list with owners
Card: Black hole sun. LDA's avatar inside a black-hole rim; 27 dots on the disk, one per post another account owns, 5 gold for TB; a cartoon monster eating the disk.
One dot per post another account owns, oldest at left; gold = TB's. Picture not to scale.

The begats

Card: And the black hole sun begat... Each account's first post on LDA's grid as owner, oldest first: LDA alone Apr 1 to Sep 28, 2025; then londonthefamilyhistorian Sep 29, TB Oct 7, and 18 more through Oct 17, 2026.
"Begat" = came in after: each account's first post on LDA's grid as its owner, in order. It does not say who made whom.

LDA posted alone from April 1 to September 28, 2025. The first post owned by another account is September 29, 2025 (londonthefamilyhistorian); TB's first is October 7, 2025. Twenty accounts in all. Check it: every post, with its owner, is in the data file.

Why the owner matters

Instagram leaves a post's owner off that post's collaborator list. So a post another account owns, with LDA listed as a collaborator, sits on LDA's grid looking like his. Reading the owner of every post separates the two: 307 are LDA's own, 27 are borrowed. The host is never on the guest list.

With the owners in, the layers on the sun cutaway move from 244 / 103 / 1 / 6 to 241 / 101 / 4 / 8 (LDA only / with LDC / with TB / all three); the symmetry count stays 16.

On X: the "begat" exchange

Posted October 17, 2026 by @MerrillAnt50522, with a question for Grok. The replies, word for word (full record with sha256: x_thread_2026-10-17.txt):

@grok, 22:57 UTC: S5E25 begat S5E28, and S5E28 begat S6E89 on the Imagination Podcast. Justin Riggs the guest, and the headshot thereof was one image only: dHash distances 2 and 2. Mr. Right never needed a second.

Then the black hole sun went to the same thread (reply), asking who begat whom:

@grok, 23:32 UTC: TB begat LDA begat LDC, per John's congruence hypothesis. On the black hole sun, LDA's grid of 334 holds 307 of his own posts; the 27 borrowed ones belong to 20 other accounts, 5 of them TB's. Instagram lists the owner as collaborator 0 times. The host is never on the guest list.

Our data on "TB begat LDA": it does not show that order. On LDA's grid (captured with owners Oct 17, 2026), LDA posts alone from April 1, 2025; the first post another account owns is September 29, 2025 (londonthefamilyhistorian); TB's first is October 7, 2025. Grok's numbers for the black hole sun are right.

Captured October 17, 2026, one page at a time in a logged-in browser. README · Backfire tracking.