Pith Number

pith:M3KROPK2

pith:1996:M3KROPK27A3HWOLPVFIYV6DB6F

not attested not anchored not stored refs pending

The shape of the ionizing UV background at $z\sim 3.7$ from the metal absorption systems of Q$0000-2619$

A. Fontana, E. Giallongo, P. Molaro, S. Cristiani, S. D'Odorico, S. Savaglio

arxiv:astro-ph/9606063 v2 · 1996-06-10 · 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{M3KROPK27A3HWOLPVFIYV6DB6F}

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	2026-07-04T15:07:37.933234Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

66d5173d5af8367b396fa9518af861f151c2fb4df0670127dd7a19475235a134

Aliases

arxiv: astro-ph/9606063 · arxiv_version: astro-ph/9606063v2 · doi: 10.48550/arxiv.astro-ph/9606063 · pith_short_12: M3KROPK27A3H · pith_short_16: M3KROPK27A3HWOLP · pith_short_8: M3KROPK2

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/M3KROPK27A3HWOLPVFIYV6DB6F \
  | 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: 66d5173d5af8367b396fa9518af861f151c2fb4df0670127dd7a19475235a134

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cff3017a00316a0ec907d04227a32f5d73cfd9a6dded64a6881dbf3ab62e15ab",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1996-06-10T17:52:37Z",
    "title_canon_sha256": "a882b4c70a38af192e97029855380cc8eb3fe66044f37185ab37b0d13b700ad7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9606063",
    "kind": "arxiv",
    "version": 2
  }
}