Pith Number

pith:KQ4PQUQD

pith:2012:KQ4PQUQDN2FNJ6KMARQVUG4AT5

not attested not anchored not stored refs pending

The Origin of Dwarf Early-Type Galaxies

2, (2) Carnegie Observatories, 3) ((1) Universidad Complutense de Madrid, (3) UCO/Lick), Elisa Toloba (1

arxiv:1210.7815 v1 · 2012-10-29 · 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{KQ4PQUQDN2FNJ6KMARQVUG4AT5}

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	2026-05-18T03:41:58.090400Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5438f852036e8ad4f94c04615a1b809f40f67dc9a7a1a8fe3ecf89f3f292b0f5

Aliases

arxiv: 1210.7815 · arxiv_version: 1210.7815v1 · doi: 10.48550/arxiv.1210.7815 · pith_short_12: KQ4PQUQDN2FN · pith_short_16: KQ4PQUQDN2FNJ6KM · pith_short_8: KQ4PQUQD

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/KQ4PQUQDN2FNJ6KMARQVUG4AT5 \
  | 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: 5438f852036e8ad4f94c04615a1b809f40f67dc9a7a1a8fe3ecf89f3f292b0f5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "02ba3a72d8c428808998613f5353bce44fe1a4538f0b46b9c322034364d337b2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-10-29T20:00:48Z",
    "title_canon_sha256": "79835a7e6c4637f64b06b09f514ee565f9c01213150c29a1f1b39573d62f1095"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.7815",
    "kind": "arxiv",
    "version": 1
  }
}