Pith Number

pith:NIZCBNQ3

pith:2018:NIZCBNQ3OAXQEGXUULL4BINJMQ

not attested not anchored not stored refs pending

The interaction of the halo around the butterfly planetary nebula NGC650-1 with the interstellar medium

A. Nigoche-Netro, G. Ramos-Larios, J.C. Ram\'irez V\'elez, L. Olgu\'in, L. Sabin, M.A. G\'omez-Mu\~noz, M.A. Guerrero, M. Ch\'avez, R. V\'azquez, S. Akras

arxiv:1801.01215 v1 · 2018-01-04 · astro-ph.SR · 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{NIZCBNQ3OAXQEGXUULL4BINJMQ}

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	2026-05-18T00:26:42.751666Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a3220b61b702f021af4a2d7c0a1a9643c34d7958554670a8e9d00f6f875ec93

Aliases

arxiv: 1801.01215 · arxiv_version: 1801.01215v1 · doi: 10.48550/arxiv.1801.01215 · pith_short_12: NIZCBNQ3OAXQ · pith_short_16: NIZCBNQ3OAXQEGXU · pith_short_8: NIZCBNQ3

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/NIZCBNQ3OAXQEGXUULL4BINJMQ \
  | 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: 6a3220b61b702f021af4a2d7c0a1a9643c34d7958554670a8e9d00f6f875ec93

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "acb564dac3d09dd43d519e7ad4d3dbc2d446711e53db3d328c80abceb4d3d6fc",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-01-04T01:22:53Z",
    "title_canon_sha256": "8f775c14b8b11d378781771089018d1ffa2d06a5f393b3dcde5e783591c3fcd0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.01215",
    "kind": "arxiv",
    "version": 1
  }
}