Session Report TCHW-20260729-01: One Thunder Coins: Hold and Win Run, Checkpoints and Bonus Rounds
Below sits the checkpoint record of TCHW-20260729-01, one logged demo session of Thunder Coins: Hold and Win: 2,960 spins at a flat 1.00 stake, the checkpoints read from the ledger, the feature rounds it produced, and the arithmetic that ties a 80.0% return to a closing balance anyone can check.
The checkpoints run through the whole session, the good stretches and the flat ones together, because a run is only evidence if all of it is on the record.
What these numbers are, and what they are not
Session passport
Corrected 15 September 2026: the 102.0x figure is now labelled best full round: it is the payout of one bonus round, as the round table shows, and the first version of this page called it a single win.
The arithmetic that has to close
The publishing test does not care how the session felt: the start, minus everything staked, plus everything returned, must equal the final balance on the screen.
It closes to the cent, which is the standard every session on this site has to meet before a single number leaves it.
Balance curve, read from the ledger
The curve traces the recorded balance across the run at even intervals, plus the start and the close; it does not interpolate between readings. The dotted line marks the 11,000.00 start. The session ran between a high of 11,022.00 and a low of 10,406.00, both read from the full ledger.
Corrected 9 September 2026: the high and low above are now taken from the full ledger. The first version of this page quoted the extremes of the plotted sample, which fell short of the checkpoint table's own peak.
Checkpoint table, in full
Every logged checkpoint of the session, each read from the ledger at the listed spin. A round row shows the balance once the triggering spin's stake had left it and any pay of its own had been credited, before the round paid; the first row shows the balance once the first stake had left it; every other row shows the balance once the listed spin had settled.
| # | Spin | Balance | Net vs start | Moment |
|---|---|---|---|---|
| 1 | 1 | 10,999.00 | −1.00 | After spin 1 |
| 2 | 151 | 10,960.00 | −40.00 | Round 1 opens |
| 3 | 197 | 10,959.00 | −41.00 | Round 2 opens |
| 4 | 217 | 10,986.00 | −14.00 | Round 3 opens |
| 5 | 256 | 10,980.00 | −20.00 | Round 4 opens |
| 6 | 256 | 11,022.00 | +22.00 | Session peak |
| 7 | 755 | 10,779.00 | −221.00 | Scheduled midpoint |
| 8 | 963 | 10,688.00 | −312.00 | Round 5 opens |
| 9 | 1,070 | 10,716.00 | −284.00 | Round 6 opens |
| 10 | 1,358 | 10,612.00 | −388.00 | Round 7 opens |
| 11 | 1,430 | 10,607.00 | −393.00 | Round 8 opens |
| 12 | 1,482 | 10,661.00 | −339.00 | Scheduled midpoint |
| 13 | 1,610 | 10,656.00 | −344.00 | Round 9 opens |
| 14 | 1,656 | 10,699.00 | −301.00 | Round 10 opens |
| 15 | 1,830 | 10,668.00 | −332.00 | Round 11 opens |
| 16 | 1,950 | 10,697.00 | −303.00 | Round 12 opens |
| 17 | 2,206 | 10,628.00 | −372.00 | Round 13 opens |
| 18 | 2,206 | 10,730.00 | −270.00 | Scheduled midpoint |
| 19 | 2,582 | 10,503.00 | −497.00 | Round 14 opens |
| 20 | 2,634 | 10,538.00 | −462.00 | Round 15 opens |
| 21 | 2,795 | 10,461.00 | −539.00 | Round 16 opens |
| 22 | 2,960 | 10,408.00 | −592.00 | Final checkpoint |
Corrected 18 September 2026: the rows of the checkpoint table that sit on a feature trigger are labelled as the round openings they are; the first version of this page labelled them as scheduled midpoints. Trigger spins in the round table are now counted the way the checkpoint table counts them, by the spin whose stake opened the round; the first version of this page ran one spin ahead. The scheduled midpoint at spin 2,206, which coincides with the opening of round 13, now shows the balance once that spin had settled, 10,730.00 instead of 10,628.00, the reading the other midpoints use. No payout or total changed.
The feature rounds
| Round | Trigger spin | Round payout | Payout ×bet |
|---|---|---|---|
| 1 | 151 | 27.00 | 27.0x |
| 2 | 197 | 47.00 | 47.0x |
| 3 | 217 | 17.00 | 17.0x |
| 4 | 256 | 42.00 | 42.0x |
| 5 | 963 | 88.00 | 88.0x |
| 6 | 1,070 | 41.00 | 41.0x |
| 7 | 1,358 | 38.00 | 38.0x |
| 8 | 1,430 | 62.00 | 62.0x |
| 9 | 1,610 | 63.00 | 63.0x |
| 10 | 1,656 | 78.00 | 78.0x |
| 11 | 1,830 | 45.00 | 45.0x |
| 12 | 1,950 | 58.00 | 58.0x |
| 13 | 2,206 | 102.00 | 102.0x |
| 14 | 2,582 | 61.00 | 61.0x |
| 15 | 2,634 | 41.00 | 41.0x |
| 16 | 2,795 | 51.00 | 51.0x |
| 16 rounds | 861.00 | collected in the feature | |
Round payouts are measured as the balance change banked while each round ran, and the 16 figures reconcile against the session ledger. Base-game wins make up the remaining 1,507.00 of the session return.
How this was logged
One sitting on 29 July 2026, launched from the same in-page link the demo shelf uses. The balance was recorded continuously, a timestamped frame of the screen was kept throughout, and after the close the totals were rebuilt from the recorded spins and set against the on-screen final; the invariant section shows the result. The stake held flat at 1.00 for the whole run, so every figure here is a clean read at one bet size. The full protocol lives on the methodology page.
The spin-by-spin log behind this page is not printed here; it is retained, and it is available on request through the contact form, as is the log of any other published session: name the game and the session ID, say where the figures will appear, and link back to the report when you publish them.
Relabelled 16 September 2026: the title and the opening of this page used to say "published in full" and "complete record". They now say what the page holds, the checkpoint record and the bonus register, and where the rest is. No figure changed.
Where these numbers live
The Thunder Coins: Hold and Win review draws on this log, alongside the sister sessions recorded elsewhere in the network. The return, the hit frequency and the trigger count above all come from the entries on this page. The build's rulebook sits on the Thunder Coins: Hold and Win rules page.
The tables on this page are published under the CC BY 4.0 licence: reuse the numbers freely, with a link back to this report as the source.