Pith Number

pith:2YAWLEPF

pith:2018:2YAWLEPF7ZOQHMKO4BVE4NRCS5

not attested not anchored not stored refs pending

Co-spatial UV-optical HST/STIS Spectra of Six Planetary Nebulae: Nebular and Stellar Properties

Bruce Balick, Karen B. Kwitter, Reginald J. Dufour, Richard A. Shaw, Richard B. C. Henry, Romano L. M. Corradi, Timothy R. Miller

arxiv:1809.04002 v1 · 2018-09-11 · 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{2YAWLEPF7ZOQHMKO4BVE4NRCS5}

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	2026-05-18T00:04:54.660865Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d6016591e5fe5d03b14ee06a4e36229763ef540c6d76a88d161301cab4bb170b

Aliases

arxiv: 1809.04002 · arxiv_version: 1809.04002v1 · doi: 10.48550/arxiv.1809.04002 · pith_short_12: 2YAWLEPF7ZOQ · pith_short_16: 2YAWLEPF7ZOQHMKO · pith_short_8: 2YAWLEPF

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/2YAWLEPF7ZOQHMKO4BVE4NRCS5 \
  | 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: d6016591e5fe5d03b14ee06a4e36229763ef540c6d76a88d161301cab4bb170b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "18796a9963a1f6fad3b9c255f8b1ef3220dd887e5a9a6f68a719c78fc193eb95",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-09-11T16:13:43Z",
    "title_canon_sha256": "faab3baa434f4658900399f6ea62e5f295519312fe9407036fdee389e39345b2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.04002",
    "kind": "arxiv",
    "version": 1
  }
}