Pith Number

pith:75WXA6E2

pith:2010:75WXA6E2JDMKQXRJJ4WHM5M4SX

not attested not anchored not stored refs pending

Estimation of absorption line indices of early-type galaxies using colours

Ruheng LI, Ruxi LI, Zhongmu Li

arxiv:1012.3900 v2 · 2010-12-17 · astro-ph.GA · 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{75WXA6E2JDMKQXRJJ4WHM5M4SX}

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	2026-05-18T02:04:23.074885Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ff6d70789a48d8a85e294f2c76759c95d762dc74dc7987ba5ba1ff9e466b4c9f

Aliases

arxiv: 1012.3900 · arxiv_version: 1012.3900v2 · doi: 10.48550/arxiv.1012.3900 · pith_short_12: 75WXA6E2JDMK · pith_short_16: 75WXA6E2JDMKQXRJ · pith_short_8: 75WXA6E2

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/75WXA6E2JDMKQXRJJ4WHM5M4SX \
  | 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: ff6d70789a48d8a85e294f2c76759c95d762dc74dc7987ba5ba1ff9e466b4c9f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1728d75003b35ca96727d230bb66efefb179b9f510cc93cfdf450e2696c15828",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2010-12-17T15:07:47Z",
    "title_canon_sha256": "9a40bc08d07a0a2d90ff7e216deb91c65093baef0923e2dc85e656e9f7c50318"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1012.3900",
    "kind": "arxiv",
    "version": 2
  }
}