Pith Number

pith:EZMKHOGC

pith:1997:EZMKHOGCJY5URTNIJ7HT5Q5LSY

not attested not anchored not stored refs pending

A High Deuterium Abundance at z=0.7

A. Vidal-Madjar, D. V. Bowen, J. K. Webb, K. M. Lanzetta, M. Lemoine, R. F. Carswell, R. Ferlet

arxiv:astro-ph/9708001 v1 · 1997-08-01 · 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{EZMKHOGCJY5URTNIJ7HT5Q5LSY}

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	2026-07-04T16:03:09.775499Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2658a3b8c24e3b48cda84fcf3ec3ab96225f103adb7bae9b250b38389a7c78fc

Aliases

arxiv: astro-ph/9708001 · arxiv_version: astro-ph/9708001v1 · doi: 10.48550/arxiv.astro-ph/9708001 · pith_short_12: EZMKHOGCJY5U · pith_short_16: EZMKHOGCJY5URTNI · pith_short_8: EZMKHOGC

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/EZMKHOGCJY5URTNIJ7HT5Q5LSY \
  | 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: 2658a3b8c24e3b48cda84fcf3ec3ab96225f103adb7bae9b250b38389a7c78fc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8a1f53d22d27b168863f2cdb4edb54d1e8ab9679af8f70a90e0b6718306b734",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-08-01T02:30:15Z",
    "title_canon_sha256": "a81842b8d1ccdf00d9defd0e0cd0c3cfe8599db4d1a1a0d8cff58f2d5cf54de5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9708001",
    "kind": "arxiv",
    "version": 1
  }
}