Pith Number

pith:DNUFXOUI

pith:1997:DNUFXOUICG6PQEAQJZKMKSXJQ3

not attested not anchored not stored refs pending

The absorption spectrum of the QSO PKS 2126-158 (z_em = 3.27) at high resolution

A. Fontana, E. Giallongo, S. Cristiani, S. D'Odorico, V. D'Odorico

arxiv:astro-ph/9705001 v1 · 1997-05-01 · 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{DNUFXOUICG6PQEAQJZKMKSXJQ3}

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	2026-05-18T04:21:40.433989Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1b685bba8811bcf810104e54c54ae986c3d7f9954b70b37b392bb6cef99cbd8d

Aliases

arxiv: astro-ph/9705001 · arxiv_version: astro-ph/9705001v1 · doi: 10.48550/arxiv.astro-ph/9705001 · pith_short_12: DNUFXOUICG6P · pith_short_16: DNUFXOUICG6PQEAQ · pith_short_8: DNUFXOUI

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/DNUFXOUICG6PQEAQJZKMKSXJQ3 \
  | 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: 1b685bba8811bcf810104e54c54ae986c3d7f9954b70b37b392bb6cef99cbd8d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "74a0f10e7be3375f262d9c60af7e7d42e0a1662a776555c31becd898f7b04387",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-05-01T10:11:51Z",
    "title_canon_sha256": "8df6a88a7ae9b911d44bbafd4f77ff34d5286f7d137f72615025327a1d679bb2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9705001",
    "kind": "arxiv",
    "version": 1
  }
}