Pith Number

pith:TWWQPASZ

pith:2019:TWWQPASZVDMCDDOKXFY7TKTN3F

not attested not anchored not stored refs pending

Double nuclei in NGC 908 and NGC 1187

J. E. Steiner, R. B. Menezes

arxiv:1901.06703 v1 · 2019-01-20 · 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{TWWQPASZVDMCDDOKXFY7TKTN3F}

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	2026-05-17T23:55:49.398897Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9dad078259a8d8218dcab971f9aa6dd941a1703423aa5c45cc92896b3b88ba3f

Aliases

arxiv: 1901.06703 · arxiv_version: 1901.06703v1 · doi: 10.48550/arxiv.1901.06703 · pith_short_12: TWWQPASZVDMC · pith_short_16: TWWQPASZVDMCDDOK · pith_short_8: TWWQPASZ

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/TWWQPASZVDMCDDOKXFY7TKTN3F \
  | 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: 9dad078259a8d8218dcab971f9aa6dd941a1703423aa5c45cc92896b3b88ba3f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5dbe3d55097653c4e301357e632d3a0f920772298c25f0bdb5d2bc24ffd873c0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-01-20T17:19:51Z",
    "title_canon_sha256": "100fdfdacfc891bad124d2649e67e5dda317e4d49fb95827444f892fe0921d61"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.06703",
    "kind": "arxiv",
    "version": 1
  }
}