Pith Number

pith:VUU7EW55

pith:2017:VUU7EW55USSGXBMRIT4YSRHHMZ

not attested not anchored not stored refs pending

Nitrogen Fractionation in Protoplanetary Disks from the H13CN/HC15N Ratio

C. Qi, J. Huang, K. I. \"Oberg, R. Loomis, V. V. Guzm\'an

arxiv:1701.07510 v1 · 2017-01-25 · 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{VUU7EW55USSGXBMRIT4YSRHHMZ}

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	2026-05-18T00:50:43.703976Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad29f25bbda4a46b859144f98944e76650048c9ec31949a9ef003882ba89e999

Aliases

arxiv: 1701.07510 · arxiv_version: 1701.07510v1 · doi: 10.48550/arxiv.1701.07510 · pith_short_12: VUU7EW55USSG · pith_short_16: VUU7EW55USSGXBMR · pith_short_8: VUU7EW55

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/VUU7EW55USSGXBMRIT4YSRHHMZ \
  | 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: ad29f25bbda4a46b859144f98944e76650048c9ec31949a9ef003882ba89e999

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "72ceee29b17ec99481346818d711e3d24dc50f67288b56d8ea5f9895bed7b9f8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-01-25T22:35:06Z",
    "title_canon_sha256": "e77fdb78c5644c5d8e3244235bd8cf61819d39f580edd120ae2a14f4b7fdd23a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.07510",
    "kind": "arxiv",
    "version": 1
  }
}