Pith Number

pith:NRHTSO7I

pith:2016:NRHTSO7IBZYVDEWZAH5G3GL3PD

not attested not anchored not stored refs pending

The Cosmic Evolution of the Metallicity Distribution of Ionized Gas Traced by Lyman Limit Systems

J. Christopher Howk, John M. O'Meara, J. Xavier Prochaska, Michele Fumagalli, Nicolas Lehner

arxiv:1608.02588 v2 · 2016-08-08 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NRHTSO7IBZYVDEWZAH5G3GL3PD}

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	2026-05-18T00:53:59.421408Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c4f393be80e715192d901fa6d997b78cf413cb06826f178a11660cf67cc16ec

Aliases

arxiv: 1608.02588 · arxiv_version: 1608.02588v2 · doi: 10.48550/arxiv.1608.02588 · pith_short_12: NRHTSO7IBZYV · pith_short_16: NRHTSO7IBZYVDEWZ · pith_short_8: NRHTSO7I

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/NRHTSO7IBZYVDEWZAH5G3GL3PD \
  | 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: 6c4f393be80e715192d901fa6d997b78cf413cb06826f178a11660cf67cc16ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "49acaa83fdda19887bd90ac4cb21d0e9eced61726a783b9f3d6a5c96b99cc987",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-08-08T20:00:02Z",
    "title_canon_sha256": "1717e59fef3e3d89c066b4caeb008852f066a5a9cf2aa3c5da948f339d93bfdf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.02588",
    "kind": "arxiv",
    "version": 2
  }
}