Pith Number

pith:4H3RWR2X

pith:2026:4H3RWR2XLNKWA3SVFUIU5CKNOE

not attested not anchored not stored refs pending

Optical development of the BISOU breadboard

Bruno Borgo, Bruno Maffei, Cl\'emence de Jabrun, Creidhe O'Sullivan, Morgane Loquet Le Gall, Neil Trappe, Valentin Sauvage

arxiv:2608.13225 v1 · 2026-08-13 · astro-ph.IM · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4H3RWR2XLNKWA3SVFUIU5CKNOE}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-08-14T01:00:43.212317Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1f71b47575b55606e552d114e894d7121be1d94851a0cde669e8578a18a0e64

Aliases

arxiv: 2608.13225 · arxiv_version: 2608.13225v1 · doi: 10.48550/arxiv.2608.13225 · pith_short_12: 4H3RWR2XLNKW · pith_short_16: 4H3RWR2XLNKWA3SV · pith_short_8: 4H3RWR2X

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/4H3RWR2XLNKWA3SVFUIU5CKNOE \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: e1f71b47575b55606e552d114e894d7121be1d94851a0cde669e8578a18a0e64

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b90e51f1cd84ec939ac4b9057ca29b1c2919efa909811ed3f69bc1f548624cae",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2026-08-13T13:27:38Z",
    "title_canon_sha256": "09eff33f403fc40ced7330b12df159ae486ffb856d538e3dabb171bf02e8c529"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2608.13225",
    "kind": "arxiv",
    "version": 1
  }
}