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44
docs/analysis/class-v6/rows/pairing-20261008.md Normal file
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# The pairing class and the chain-paired packs (8 October 2026, 20:4x to 21:1x UTC)
The frozen research pack `hl-v6-all` (id `0x4de7b836cc40a4ea`, generator 6, the class-v6 tree 1a938abe4) was exported with the
genesis epoch seed `edc4fa84…fb07` over node1's state stream captured after block `af89be5d…66b3` (number 159357, root
`1c583d35…1526`, 93 records, file sha256 `abb58003…0098`). `IgneumEngine::epoch_for` refuses that pair by the class v5 rule
(the stream's block must be the epoch's seed block), so the node and pool readers cannot re-check the object as packed. The
pairing was the W = 8 lane's research recipe of 14:00 (the CLI had no seed-block check), not a tool fault.
## The pairing holds on the chain's own pair
| Reader | Inputs | Id |
|---|---|---|
| the node engine, `igneum-miner program-id` on the placed (c) pair (node lane, 20:46:55 UTC) | epoch `af89be5d…`, era `edc4fa84…`, day 20730, the state above, class v6 | `2a1d6caab4c24564`, attempt 0 |
| the freeze CLI at 1a938abe4, `export … --era 0:edc4fa84…` (build-5, 20:48 UTC) | the same | `0x2a1d6caab4c24564`, attempt 0, generator 6, loads 256 |
A read with the era set to the block hash as well (`--era 0:af89be5d…`) draws `442a1691b3e3507f` (era label 93a14ac6): a
different input, void for the pairing. The ruling (hash lane, 21:00 UTC): D1 freezes the generator tree 1a938abe4; F0 names
the chain-seed draw `2a1d6caab4c24564` on the pair above; the research pack stays labelled at its pairing.
## The chain-paired packs (build-1 `/srv/artefacts/packs/`, read back 21:1x UTC)
| Pack | Class | Id | Attempt | Loads | tgz sha256 |
|---|---|---|---|---|---|
| hl-v6-all-cs | mx8+sh256x27+state+reg64c+fold+rw | `0x2a1d6caab4c24564` | 0 | 256 | `a4742bfefdc632a1f3977c9dfb8f66417c2f132436dcd9ad72c32a608638d6ca` |
| hl-v6-all-nowin-cs | the same +nowin | `0x4e1897e6ee262228` | 0 | 256 | `6ef02eeea5d078f5215b09145239e27a83c8a41e6bccb11bd638d3170b0538bb` |
| hl-v6-foldrw-cs | mx8+sh256x27+state+fold+rw | `0xb53d00f2bf629076` | 0 | 128 | `4f2abd36aee600d97d230b5b09f10680f228448007c6c7062fca737bf6351748` |
| hl-v5-nowin-cs | mx8+sh256x27+state+nowin | `0xa02b1a9dee6b8587` | 1 | 128 | `e2eb2840879d264a8d3562751f983ce57d821087ae6d52796eccf3ef48484b8e` |
| hl-v6-all-prefix-cs | as hl-v6-all-cs, the F05 prefix text | `0x2a1d6caab4c24564` | 0 | 256 | `a9e01f13d6f26f133504c6d62e73b86ee460b53d8798218100b2f250e0ac8ca5` |
All five: epoch seed `af89be5d…`, era `edc4fa84…`, day 20730, the state above, exported at 1a938abe4 on build-5.
## The P01 reference of the signing object
`igneum-pow hash-bound --prehash 00…01 --nonce 0 --count 1000000` on hl-v6-all-cs's inputs (build-5, 20:55 to 21:02 UTC):
1,000,000 lines `nonce hash16`, first `0 2394c9f10f9447a2`, last `999999 cdaadae412c7d9c1`, sha256
`b77c61d874aed238394fd0e556113192acf21e0762871b1044796f3fbaea338a`, at build-1 `/srv/artefacts/packs/p01-vectors/hl-v6-all-cs.txt`
(+ .sha256). The OpenCL read on PC 1's RX 7600 is the job `run-ca3-pc1-p01-opencl-7600-20261008` (behind the knee rows; the
pack by `fetch-ca3-p01cs-pack-20261008`); equal digests are 1,000,000 of 1,000,000. The Metal read is the morning's.
## The tool fix
class-v6 `ce6e6902f45f40e727726cf3e0dbf0e1c924658a` (suite 151 passed, 0 failed, 8 ignored on build-7): `StateStream::check_pairing`
runs first on every `--state` command; a refused pair exits 2 and writes nothing; a string seed never pairs; `--unpaired-state`
records a research pairing on purpose. Known-failed test `igneum-pow/tests/pairing.rs`. The generator is untouched.

152
docs/plans/igneum-2.0-test-registry.json
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