Pith Number

pith:N2OE5WIP

pith:2011:N2OE5WIPUM7VN4IGIJ2J66I4LG

not attested not anchored not stored refs pending

Thirty Years of Cometary Spectroscopy from McDonald Observatory

Anita L. Cochran, Candace L. Gray, Edwin S. Barker

arxiv:1112.4770 v1 · 2011-12-20 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{N2OE5WIPUM7VN4IGIJ2J66I4LG}

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	2026-05-18T01:59:04.552236Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e9c4ed90fa33f56f10642749f791c59bd6ac587325fb4ef082d89c855821b92

Aliases

arxiv: 1112.4770 · arxiv_version: 1112.4770v1 · doi: 10.48550/arxiv.1112.4770 · pith_short_12: N2OE5WIPUM7V · pith_short_16: N2OE5WIPUM7VN4IG · pith_short_8: N2OE5WIP

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/N2OE5WIPUM7VN4IGIJ2J66I4LG \
  | 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: 6e9c4ed90fa33f56f10642749f791c59bd6ac587325fb4ef082d89c855821b92

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "598be4c56afc1ef92a02af94ea864aa3dfce6704ef76160edc1015a212e144ba",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2011-12-20T16:56:17Z",
    "title_canon_sha256": "c095b616021aea8e691a24fd700f9520528225152f1b9fb920115785d3f8cef0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.4770",
    "kind": "arxiv",
    "version": 1
  }
}