Pith Number

pith:NJUV3SEN

pith:2019:NJUV3SENMJ24MBLRVKJ2F4J3QM

not attested not anchored not stored refs pending

Upper limits on CH$_3$OH in the HD 163296 protoplanetary disk: evidence for a low gas-phase CH$_3$OH/H$_2$CO ratio

C. Qi, C. Walsh, E.C. Fayolle, J.M. Carpenter, K.I. \"Oberg, L.I. Cleeves, M.R. Hogerheijde, M.T. Carney, V.V. Guzm\'an

arxiv:1901.02689 v1 · 2019-01-09 · astro-ph.SR · 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{NJUV3SENMJ24MBLRVKJ2F4J3QM}

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	2026-05-17T23:50:56.158018Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a695dc88d6275c60571aa93a2f13b832d0dd19e5d4c10ebdab7af372d96ccbb

Aliases

arxiv: 1901.02689 · arxiv_version: 1901.02689v1 · doi: 10.48550/arxiv.1901.02689 · pith_short_12: NJUV3SENMJ24 · pith_short_16: NJUV3SENMJ24MBLR · pith_short_8: NJUV3SEN

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/NJUV3SENMJ24MBLRVKJ2F4J3QM \
  | 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: 6a695dc88d6275c60571aa93a2f13b832d0dd19e5d4c10ebdab7af372d96ccbb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "897c1155fca975cc77192e16a545a73383d52f3477b5378929e7194cbc62a111",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-01-09T12:21:42Z",
    "title_canon_sha256": "b97f1254d7ec42d3eb959b9e26dd07fa13953a081a2e766ed9613c792a71f381"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.02689",
    "kind": "arxiv",
    "version": 1
  }
}