Pith Number

pith:4Q6E73NL

pith:2018:4Q6E73NLXUEGM5TK2CUL7F4BUS

not attested not anchored not stored refs pending

The Nature of the Stingray Nebula from Radio Observations

Ioannis Gonidakis, James A Green, Jennifer A Hardwick, Lisa Harvey-Smith, Maria Cunningham, Mudumba Parthasarathy, Orsola De Marco, Shaila Akhter

arxiv:1806.02921 v1 · 2018-06-07 · 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{4Q6E73NLXUEGM5TK2CUL7F4BUS}

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	2026-05-18T00:12:16.605552Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e43c4fedabbd0866766ad0a8bf9781a4909060def1cd5ea1e54eccd9ca843802

Aliases

arxiv: 1806.02921 · arxiv_version: 1806.02921v1 · doi: 10.48550/arxiv.1806.02921 · pith_short_12: 4Q6E73NLXUEG · pith_short_16: 4Q6E73NLXUEGM5TK · pith_short_8: 4Q6E73NL

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/4Q6E73NLXUEGM5TK2CUL7F4BUS \
  | 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: e43c4fedabbd0866766ad0a8bf9781a4909060def1cd5ea1e54eccd9ca843802

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b73e49b47fc993f1a7b9fa6e8db2e71691f82c71e7ecd640a0e1e62428afaad1",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-06-07T23:16:55Z",
    "title_canon_sha256": "1dfec1ef410b112e3de3dc0a6cf6b1ac376389dc80dd9b08304b31122182e442"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.02921",
    "kind": "arxiv",
    "version": 1
  }
}