Pith Number

pith:FFM3HAKF

pith:2018:FFM3HAKFNW5VE3THBKP5X6RC5P

not attested not anchored not stored refs pending

Spectrographs with holographic gratings on freeform surfaces: design approach and application for the LUVOIR mission

Coralie Neiner (GEPI), Eduard Muslimov (LAM), Emmanuel Hugot (LAM), Gerard Lemaitre, Jean-Claude Bouret (LAM), Marc Ferrari (LAM), Robert Grange (LAM), Simona Lombardo (LAM)

arxiv:1805.09073 v1 · 2018-05-23 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FFM3HAKFNW5VE3THBKP5X6RC5P}

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	2026-05-18T00:15:08.617712Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2959b381456dbb526e670a9fdbfa22ebdc83ee3bbdbfcbd1385aed9dce9b30db

Aliases

arxiv: 1805.09073 · arxiv_version: 1805.09073v1 · doi: 10.48550/arxiv.1805.09073 · pith_short_12: FFM3HAKFNW5V · pith_short_16: FFM3HAKFNW5VE3TH · pith_short_8: FFM3HAKF

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/FFM3HAKFNW5VE3THBKP5X6RC5P \
  | 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: 2959b381456dbb526e670a9fdbfa22ebdc83ee3bbdbfcbd1385aed9dce9b30db

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b00d27b9ebb548daef9a4ebf4d2072c55c421163ec83f8b7e797d7f48e19bb42",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-05-23T12:00:33Z",
    "title_canon_sha256": "011ff9f0c887a390802a5eabf795e85c1e7ac12552605b517a748390e2a03a41"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.09073",
    "kind": "arxiv",
    "version": 1
  }
}