Pith Number

pith:2HIIKRZD

pith:2018:2HIIKRZDYOYLTFQ5B6JHA4X6CH

not attested not anchored not stored refs pending

Internal Variations in Empirical Oxygen Abundances for Giant HII Regions in the Galaxy NGC 2403

Lin Lin, Xu Kong, Ye-Wei Mao

arxiv:1801.07406 v2 · 2018-01-23 · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2HIIKRZDYOYLTFQ5B6JHA4X6CH}

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	2026-05-18T00:23:44.846540Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d1d0854723c3b0b9961d0f927072fe11f6a52bc06506dcc2877ee208347a013d

Aliases

arxiv: 1801.07406 · arxiv_version: 1801.07406v2 · doi: 10.48550/arxiv.1801.07406 · pith_short_12: 2HIIKRZDYOYL · pith_short_16: 2HIIKRZDYOYLTFQ5 · pith_short_8: 2HIIKRZD

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/2HIIKRZDYOYLTFQ5B6JHA4X6CH \
  | 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: d1d0854723c3b0b9961d0f927072fe11f6a52bc06506dcc2877ee208347a013d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "875d16a3c7ca10f9f6a1a31bc828058e960afeab5bcc4de9dc4d8445e0cfebfa",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-01-23T06:36:18Z",
    "title_canon_sha256": "b73ca1dadb9c00d5f3f8575186624a83874bbb198d996bbca88e4d8758f618e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.07406",
    "kind": "arxiv",
    "version": 2
  }
}