Pith Number

pith:T4F2MP5Z

pith:2019:T4F2MP5ZRYNACCVNOOZBAAWWHG

not attested not anchored not stored refs pending

Spectral analysis of the binary nucleus of the planetary nebula Hen 2-428 - first results

Marcelo M. Miller Bertolami, Martin A. Barstow, Nicole Reindl, Nicolle L. Finch, Sarah L. Casewell, Stefan Taubenberger, Stephan Geier

arxiv:1901.03103 v1 · 2019-01-10 · 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{T4F2MP5ZRYNACCVNOOZBAAWWHG}

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	2026-05-17T23:56:35.552968Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9f0ba63fb98e1a010aad73b21002d6399a699375b68bc92a2c73b6b6c5b3f375

Aliases

arxiv: 1901.03103 · arxiv_version: 1901.03103v1 · doi: 10.48550/arxiv.1901.03103 · pith_short_12: T4F2MP5ZRYNA · pith_short_16: T4F2MP5ZRYNACCVN · pith_short_8: T4F2MP5Z

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/T4F2MP5ZRYNACCVNOOZBAAWWHG \
  | 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: 9f0ba63fb98e1a010aad73b21002d6399a699375b68bc92a2c73b6b6c5b3f375

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "886647a28159ac706d75282278635bbb4ef03d7949842d8e02e0e15bb6d7e99c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-01-10T11:25:30Z",
    "title_canon_sha256": "c1e8e206ecb2f4896a42765957143689097b3549e52ba3e026ee0de2bfa0cb72"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.03103",
    "kind": "arxiv",
    "version": 1
  }
}