Pith Number

pith:46Y4MKKM

pith:1994:46Y4MKKMEB6E34EKGJVZHWNFYU

not attested not anchored not stored refs pending

Lick Optical Spectra of Quasar HS 1946+7658 at 10 km/sec Resolution: Lyman-Alpha Forest and Metal Absorption Systems

D. Tytler, X.-M. Fan

arxiv:astro-ph/9402067 v1 · 1994-02-24 · 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{46Y4MKKMEB6E34EKGJVZHWNFYU}

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	2026-05-18T04:33:16.732113Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e7b1c6294c207c4df08a326b93d9a5c5285fc6c6bb11a63fef39815fc909329f

Aliases

arxiv: astro-ph/9402067 · arxiv_version: astro-ph/9402067v1 · doi: 10.48550/arxiv.astro-ph/9402067 · pith_short_12: 46Y4MKKMEB6E · pith_short_16: 46Y4MKKMEB6E34EK · pith_short_8: 46Y4MKKM

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/46Y4MKKMEB6E34EKGJVZHWNFYU \
  | 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: e7b1c6294c207c4df08a326b93d9a5c5285fc6c6bb11a63fef39815fc909329f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f36540336fed464eeee94752f643fd1514f4ad0197e5101547fee1eeefc636a7",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1994-02-24T23:43:40Z",
    "title_canon_sha256": "2329abdbb2c18b0dcde1278c040b6ba9e8bf2dd9a31b7e3295b3ea007186796c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9402067",
    "kind": "arxiv",
    "version": 1
  }
}