Pith Number

pith:ZKSBZNNP

pith:2007:ZKSBZNNPBECFQFWVRQLDMVCHV6

not attested not anchored not stored refs pending

Abell 43: Longest period Planetary Nebula Nucleus variable

A. S. Mukadam, G. Vauclair, J.-E. Solheim, R. Janulis, V. Dobrovolskas

arxiv:0705.2115 v1 · 2007-05-15 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZKSBZNNPBECFQFWVRQLDMVCHV6}

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	2026-07-04T17:03:50.710424Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

caa41cb5af09045816d58c16365447af831d4c3e2ed6edcdaf614740b542a54a

Aliases

arxiv: 0705.2115 · arxiv_version: 0705.2115v1 · doi: 10.48550/arxiv.0705.2115 · pith_short_12: ZKSBZNNPBECF · pith_short_16: ZKSBZNNPBECFQFWV · pith_short_8: ZKSBZNNP

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/ZKSBZNNPBECFQFWVRQLDMVCHV6 \
  | 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: caa41cb5af09045816d58c16365447af831d4c3e2ed6edcdaf614740b542a54a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "650d00c7e91fc8438da624f93dbea3f480063a07418d0d9627068878803d90bc",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-05-15T10:56:53Z",
    "title_canon_sha256": "18e6058cef6e9b7d870695f56f38a234bc61ae82a363c847b1cf25c408a04aa0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0705.2115",
    "kind": "arxiv",
    "version": 1
  }
}