Pith Number

pith:4MMGAPET

pith:2011:4MMGAPET5HRJTIW7A7CR2ZFVAR

not attested not anchored not stored refs pending

A Herschel study of Planetary Nebulae

G. C. Van de Steene, K. M. Exter, M. J. Barlow, M. Matsuura, P. A. M. van Hoof, the MESS consortium, T. L. Lim, T. Ueta

arxiv:1109.4219 v1 · 2011-09-20 · 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{4MMGAPET5HRJTIW7A7CR2ZFVAR}

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	2026-05-18T02:00:28.893156Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e318603c93e9e299a2df07c51d64b5047765abd5aef324a8dad57ce9bd30ecf0

Aliases

arxiv: 1109.4219 · arxiv_version: 1109.4219v1 · doi: 10.48550/arxiv.1109.4219 · pith_short_12: 4MMGAPET5HRJ · pith_short_16: 4MMGAPET5HRJTIW7 · pith_short_8: 4MMGAPET

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/4MMGAPET5HRJTIW7A7CR2ZFVAR \
  | 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: e318603c93e9e299a2df07c51d64b5047765abd5aef324a8dad57ce9bd30ecf0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8cbc537dd7b9219de0efdbec3df85966346f055bc7f49442504cb1a3da74cca7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-09-20T07:26:08Z",
    "title_canon_sha256": "6db48b53e13572ab8bf9f3ae08278d8ae294185501e05de45be550509c0fa88c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.4219",
    "kind": "arxiv",
    "version": 1
  }
}