Pith Number

pith:PLBJRD2F

pith:2010:PLBJRD2FIDQUDDZ75NUAGAJCGT

not attested not anchored not stored refs pending

UCDs as Probes of the Major and Minor Merger Histories of Galaxies

Mark A. Norris, Sheila J. Kannappan

arxiv:1009.2489 v2 · 2010-09-13 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PLBJRD2FIDQUDDZ75NUAGAJCGT}

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	2026-05-18T02:05:31.063194Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ac2988f4540e1418f3feb6803012234f39a64c46ecfcc85c71fb51eb75757ee

Aliases

arxiv: 1009.2489 · arxiv_version: 1009.2489v2 · doi: 10.48550/arxiv.1009.2489 · pith_short_12: PLBJRD2FIDQU · pith_short_16: PLBJRD2FIDQUDDZ7 · pith_short_8: PLBJRD2F

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/PLBJRD2FIDQUDDZ75NUAGAJCGT \
  | 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: 7ac2988f4540e1418f3feb6803012234f39a64c46ecfcc85c71fb51eb75757ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "df4fab54c00a1ce38232302025383caa3de91de600e019b784ad66cc402159a9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-09-13T19:41:00Z",
    "title_canon_sha256": "62f6083d665918198035e2d74daac81e0a4cd7040178a2fca1517d11d849be16"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.2489",
    "kind": "arxiv",
    "version": 2
  }
}