Pith Number

pith:TUP6WZNB

pith:2016:TUP6WZNBLMRAHFYUK3LFHS2LG6

not attested not anchored not stored refs pending

HASH: the Hong Kong/AAO/Strasbourg H-alpha planetary nebula database

David J Frew, Ivan Bojicic, Quentin A Parker

arxiv:1603.07042 v2 · 2016-03-23 · astro-ph.SR · astro-ph.GA · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TUP6WZNBLMRAHFYUK3LFHS2LG6}

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	2026-05-18T01:08:17.964362Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9d1feb65a15b2203971456d653cb4b378e0e00710d9f80bff2a1c02303a961df

Aliases

arxiv: 1603.07042 · arxiv_version: 1603.07042v2 · doi: 10.48550/arxiv.1603.07042 · pith_short_12: TUP6WZNBLMRA · pith_short_16: TUP6WZNBLMRAHFYU · pith_short_8: TUP6WZNB

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/TUP6WZNBLMRAHFYUK3LFHS2LG6 \
  | 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: 9d1feb65a15b2203971456d653cb4b378e0e00710d9f80bff2a1c02303a961df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8e48c9b70aeb19be1939052f848ada06c3b659579b55373b5de335b7f8b5ce03",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-03-23T01:44:01Z",
    "title_canon_sha256": "664a553ebe7132f6b99bcaa6f827e9d19648e3bae2c2491bb6f1d11d88777723"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.07042",
    "kind": "arxiv",
    "version": 2
  }
}