Pith Number

pith:VCEZACSA

pith:1996:VCEZACSAWPSKIVU3NEQNKUTWWT

not attested not anchored not stored refs pending

Lyman Alpha Forest towards B2 1225+317

D.G.York, D.Welty, J.Bechtold, Ke-Liang Huang, Pushpa Khare, R.Green, R.Srianand

arxiv:astro-ph/9612163 v1 · 1996-12-17 · 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{VCEZACSAWPSKIVU3NEQNKUTWWT}

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	2026-05-18T01:40:18.607963Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a889900a40b3e4a4569b6920d55276b4f0e239cb117cfbc302aab34823055acd

Aliases

arxiv: astro-ph/9612163 · arxiv_version: astro-ph/9612163v1 · doi: 10.48550/arxiv.astro-ph/9612163 · pith_short_12: VCEZACSAWPSK · pith_short_16: VCEZACSAWPSKIVU3 · pith_short_8: VCEZACSA

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/VCEZACSAWPSKIVU3NEQNKUTWWT \
  | 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: a889900a40b3e4a4569b6920d55276b4f0e239cb117cfbc302aab34823055acd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3fa45422870548f45392474d7d9597ec3c4d083fce7dcc99d65f33021b17497f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1996-12-17T20:55:22Z",
    "title_canon_sha256": "d768c295daceab3809b2e14195a83ba1ea0af4369d486507d72fae7ad545c2d1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9612163",
    "kind": "arxiv",
    "version": 1
  }
}