Pith Number

pith:KK4DM6KZ

pith:2009:KK4DM6KZTZAY3LADKDVEZIUSMA

not attested not anchored not stored refs pending

The puzzling dredge-up pattern in NGC 1978

Bernhard Aringer, Kenneth H. Hinkle, Michael T. Lederer, Oscar Straniero, Sergio Cristallo, Thomas Lebzelter

arxiv:0906.1279 v1 · 2009-06-06 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KK4DM6KZTZAY3LADKDVEZIUSMA}

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	2026-05-18T02:13:28.506702Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

52b83679599e418dac0350ea4ca29260285f166ef975ec2089af4432d7977d77

Aliases

arxiv: 0906.1279 · arxiv_version: 0906.1279v1 · doi: 10.48550/arxiv.0906.1279 · pith_short_12: KK4DM6KZTZAY · pith_short_16: KK4DM6KZTZAY3LAD · pith_short_8: KK4DM6KZ

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/KK4DM6KZTZAY3LADKDVEZIUSMA \
  | 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: 52b83679599e418dac0350ea4ca29260285f166ef975ec2089af4432d7977d77

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9fc1596c560a023c4896f8569b78d177e4ece42ff703d9028015bdd081329e7c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-06-06T14:25:50Z",
    "title_canon_sha256": "66458172893790d0126954d13e64640776ce0e0919f6d51b149b1185fe8ce1c0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.1279",
    "kind": "arxiv",
    "version": 1
  }
}