Pith Number

pith:YMPER73R

pith:2013:YMPER73RVHYJUUVUFPNR2MUTI6

not attested not anchored not stored refs pending

The expansion proper motions of the extraordinary giant lobes of the planetary nebula KjPn 8 revisited

(2) Jodrell Bank Centre for Astrophysics, Astrophysics, Greece, John Meaburn (2) ((1) Institute of Astronomy, National Observatory of Athens, Panos Boumis (1), Remote Sensing, Space Applications, UK), University of Manchester

arxiv:1301.5589 v1 · 2013-01-23 · astro-ph.GA · 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{YMPER73RVHYJUUVUFPNR2MUTI6}

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	2026-05-18T01:51:59.335784Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c31e48ff71a9f09a52b42bdb1d329347a4231ed2e46e207dd72833437291f077

Aliases

arxiv: 1301.5589 · arxiv_version: 1301.5589v1 · doi: 10.48550/arxiv.1301.5589 · pith_short_12: YMPER73RVHYJ · pith_short_16: YMPER73RVHYJUUVU · pith_short_8: YMPER73R

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/YMPER73RVHYJUUVUFPNR2MUTI6 \
  | 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: c31e48ff71a9f09a52b42bdb1d329347a4231ed2e46e207dd72833437291f077

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "98b82b326ce0dfdb97c738c54f9612956170bda27045ff93850f812ddc9afb0b",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-01-23T18:12:04Z",
    "title_canon_sha256": "efe52f3d31c883ac74b8ed201b81e2e1cc8a4731b785f64b3a76859f5762bc0c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.5589",
    "kind": "arxiv",
    "version": 1
  }
}