Pith Number

pith:FCUSNHHQ

pith:2014:FCUSNHHQ5L7JDEDJV624KXPBUN

not attested not anchored not stored refs pending

Nitrogen Abundances in Damped Ly-alpha Absorbers

(2) OAT, (3) LAM), Celine Peroux (3), Giovanni Vladilo (2)((1) ESO, Miriam Centurion (2), Paolo Molaro (2), Tayyaba Zafar (1), Valentina D'Odorico (2)

arxiv:1401.8221 v2 · 2014-01-31 · astro-ph.GA · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FCUSNHHQ5L7JDEDJV624KXPBUN}

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	2026-05-18T02:49:30.476887Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28a9269cf0eafe919069afb5c55de1a345586a8659f6b184fa77a5d0defec846

Aliases

arxiv: 1401.8221 · arxiv_version: 1401.8221v2 · doi: 10.48550/arxiv.1401.8221 · pith_short_12: FCUSNHHQ5L7J · pith_short_16: FCUSNHHQ5L7JDEDJ · pith_short_8: FCUSNHHQ

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/FCUSNHHQ5L7JDEDJV624KXPBUN \
  | 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: 28a9269cf0eafe919069afb5c55de1a345586a8659f6b184fa77a5d0defec846

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ca5efc8a91369555779a0541a0b14dd5373a049147b4b465b9ba5a4d6e24bf6c",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2014-01-31T16:45:37Z",
    "title_canon_sha256": "efbdccb70f845735a6a1825b55e68b3c239e17d64430dae1a2afd1472fc148d3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.8221",
    "kind": "arxiv",
    "version": 2
  }
}