Pith Number

pith:ZKYVUHG7

pith:2010:ZKYVUHG7Q4ZCPEVFBDHEWPHXC7

not attested not anchored not stored refs pending

The Halo and Rings of the Planetary Nebula NGC 40 in the Mid-Infrared

G. Ramos-Larios, J. P. Phillips, L. C. Cuesta

arxiv:1010.4833 v1 · 2010-10-23 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZKYVUHG7Q4ZCPEVFBDHEWPHXC7}

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	2026-05-18T04:38:50.084615Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cab15a1cdf87322792a508ce4b3cf717eb8a50cf893aad49cf30890abd7ea36d

Aliases

arxiv: 1010.4833 · arxiv_version: 1010.4833v1 · doi: 10.48550/arxiv.1010.4833 · pith_short_12: ZKYVUHG7Q4ZC · pith_short_16: ZKYVUHG7Q4ZCPEVF · pith_short_8: ZKYVUHG7

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/ZKYVUHG7Q4ZCPEVFBDHEWPHXC7 \
  | 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: cab15a1cdf87322792a508ce4b3cf717eb8a50cf893aad49cf30890abd7ea36d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3e9c29c811527dcf05fe1f594affad3e720ffc1a9d6a70231113792fe0129f6b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2010-10-23T00:19:28Z",
    "title_canon_sha256": "3e4a811fd10c3d59995803f5bf351d0b3b61b64f3cc7c60edb6617e6037f9e91"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1010.4833",
    "kind": "arxiv",
    "version": 1
  }
}