Pith Number

pith:3TBNNE2M

pith:2012:3TBNNE2MW2GHRQAUQDFXCYHEU4

not attested not anchored not stored refs pending

The planetary nebula Abell 48 and its [WN4] central star

D. J. Frew, I. S. Bojicic, K. DePew, M. Stupar, Q. A. Parker, S. Wachter

arxiv:1212.5382 v1 · 2012-12-21 · 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{3TBNNE2MW2GHRQAUQDFXCYHEU4}

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	2026-05-18T03:37:54.630830Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dcc2d6934cb68c78c01480cb7160e4a733c0aaf7fcabf9c457025c29358c38c1

Aliases

arxiv: 1212.5382 · arxiv_version: 1212.5382v1 · doi: 10.48550/arxiv.1212.5382 · pith_short_12: 3TBNNE2MW2GH · pith_short_16: 3TBNNE2MW2GHRQAU · pith_short_8: 3TBNNE2M

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/3TBNNE2MW2GHRQAUQDFXCYHEU4 \
  | 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: dcc2d6934cb68c78c01480cb7160e4a733c0aaf7fcabf9c457025c29358c38c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1410163198f7c28387ebebb7c17725acc86e0de90d56ecc5d0bc9e877e379dc5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-12-21T10:21:55Z",
    "title_canon_sha256": "3c203f4986993a6a68f5df0ca80b5104cbc5ca1b9a38cff01bf3879253725908"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.5382",
    "kind": "arxiv",
    "version": 1
  }
}