Pith Number

pith:HHNW7PAW

pith:2002:HHNW7PAWJVBLAL5SFNYBE3VFF4

not attested not anchored not stored refs pending

The physical properties of the Ly-Alpha forest at z > 1.5

Cambridge), Emanuele Giallongo (Osservatorio Astronomico di Roma), Robert F. Carswell (IoA, Sandro D'Odorico (ESO), Stefano Cristiani (ST ECF/Osservatorio Astronomico di Trieste), Tae-Sun Kim (ESO)

arxiv:astro-ph/0205237 v1 · 2002-05-15 · 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{HHNW7PAWJVBLAL5SFNYBE3VFF4}

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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.

Cited by

1 paper in Pith

Machine Learning Techniques for Astrophysics and Cosmology: Lyman-$\alpha$ forest

Receipt and verification

First computed	2026-07-04T15:20:09.193520Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

39db6fbc164d42b02fb22b70126ea52f2b0b68ee36526d6f8c29fecefb8474ab

Aliases

arxiv: astro-ph/0205237 · arxiv_version: astro-ph/0205237v1 · doi: 10.48550/arxiv.astro-ph/0205237 · pith_short_12: HHNW7PAWJVBL · pith_short_16: HHNW7PAWJVBLAL5S · pith_short_8: HHNW7PAW

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/HHNW7PAWJVBLAL5SFNYBE3VFF4 \
  | 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: 39db6fbc164d42b02fb22b70126ea52f2b0b68ee36526d6f8c29fecefb8474ab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a604c416e08715391ad832750970c4360af665c803cf2422464e536868916676",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-05-15T18:10:10Z",
    "title_canon_sha256": "3ba17b8cd2aa2528479d8940cf664f55035863f8706f6bbb2c0325336b5ceb49"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0205237",
    "kind": "arxiv",
    "version": 1
  }
}