Pith Number

pith:OYVIPSKC

pith:2017:OYVIPSKCVAKIMNFAVPH6EJXADO

not attested not anchored not stored refs pending

Models of the Mass-Ejection Histories of pre Planetary Nebulae. II. The Formation of the Butterfly and its Proboscis in M2-9

Adam Frank, Baowei Liu, Bruce Balick, Romano Corradi

arxiv:1712.00056 v2 · 2017-11-30 · 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{OYVIPSKCVAKIMNFAVPH6EJXADO}

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	2026-05-18T00:22:57.501543Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

762a87c942a8148634a0abcfe226e01b8cb732289ade1f637d41031650c2e3b3

Aliases

arxiv: 1712.00056 · arxiv_version: 1712.00056v2 · doi: 10.48550/arxiv.1712.00056 · pith_short_12: OYVIPSKCVAKI · pith_short_16: OYVIPSKCVAKIMNFA · pith_short_8: OYVIPSKC

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/OYVIPSKCVAKIMNFAVPH6EJXADO \
  | 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: 762a87c942a8148634a0abcfe226e01b8cb732289ade1f637d41031650c2e3b3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c3ab136566303b3ca05c05889ac271025c024b5bc41556ae40a6bbdf1e00b95f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2017-11-30T20:06:28Z",
    "title_canon_sha256": "7b7a6962985522fe04ad13d629f4850f6e82fc8af91f4859309cc67fb1347965"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.00056",
    "kind": "arxiv",
    "version": 2
  }
}