Pith Number

pith:6XRGUDJK

pith:2015:6XRGUDJKDFJIWY5L2GAWUHLGHY

not attested not anchored not stored refs pending

An imaging and spectroscopic study of the planetary nebulae in NGC 5128 (Centaurus A): Planetary nebulae catalogues

J. R. Walsh, M. Rejkuba, N. A. Walton

arxiv:1501.01853 v2 · 2015-01-08 · 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{6XRGUDJKDFJIWY5L2GAWUHLGHY}

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	2026-05-18T02:28:04.799261Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f5e26a0d2a19528b63abd1816a1d663e07170b9cf0db164e68397753b65e1e5f

Aliases

arxiv: 1501.01853 · arxiv_version: 1501.01853v2 · doi: 10.48550/arxiv.1501.01853 · pith_short_12: 6XRGUDJKDFJI · pith_short_16: 6XRGUDJKDFJIWY5L · pith_short_8: 6XRGUDJK

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/6XRGUDJKDFJIWY5L2GAWUHLGHY \
  | 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: f5e26a0d2a19528b63abd1816a1d663e07170b9cf0db164e68397753b65e1e5f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dfdc154dae40a9406a12b4db7f0444d162950e41c761b2c654f3fd8aa888b81d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-01-08T14:08:16Z",
    "title_canon_sha256": "2365dc63140b374a092e1415ce28f0461ee4dbab765b73a0dc2d0b7e868fe3f3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.01853",
    "kind": "arxiv",
    "version": 2
  }
}