Pith Number

pith:U7A3HNER

pith:1999:U7A3HNERJGLTYAWVHZ3K7M6YTB

not attested not anchored not stored refs pending

Rayleigh scattering and laser spot elongation problems at ALFA

(2) NUI Galway, (3) MPI fur extraterrestrische Physik Garching, E. Viard (1), F. Delplancke (1), Germany, Germany), Ireland, N. Ageorges (2), N. Hubin (1), R. Davies (3) ((1) ESO Garching

arxiv:astro-ph/9911086 v1 · 1999-11-05 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U7A3HNERJGLTYAWVHZ3K7M6YTB}

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	2026-07-04T14:17:17.784739Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7c1b3b49149973c02d53e76afb3d8986b14c9caa54b5f1ce22a45a4fbfd2ff3

Aliases

arxiv: astro-ph/9911086 · arxiv_version: astro-ph/9911086v1 · doi: 10.48550/arxiv.astro-ph/9911086 · pith_short_12: U7A3HNERJGLT · pith_short_16: U7A3HNERJGLTYAWV · pith_short_8: U7A3HNER

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/U7A3HNERJGLTYAWVHZ3K7M6YTB \
  | 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: a7c1b3b49149973c02d53e76afb3d8986b14c9caa54b5f1ce22a45a4fbfd2ff3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea15881f19c9f25b75c26b94b33c70680979d1bb1f4e075dff29f64804853841",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-11-05T13:18:21Z",
    "title_canon_sha256": "6c42d53e17f7d54313ffeb751ba35049ade8c6ac6b288f980b2b77f503e973e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9911086",
    "kind": "arxiv",
    "version": 1
  }
}