Pith Number

pith:UGK6RNME

pith:2010:UGK6RNMEI3M2MEWITXJCZJ7775

not attested not anchored not stored refs pending

The Effect of Corotation on the Radial Gradient of Metallicity of Spiral Galaxies

J.R.D. Lepine, S. Scarano Jr.

arxiv:1002.1340 v1 · 2010-02-06 · 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{UGK6RNMEI3M2MEWITXJCZJ7775}

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	2026-05-18T02:09:18.876032Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a195e8b58446d9a612c89dd22ca7ffff61be96294156e209ad880c2c4821c42f

Aliases

arxiv: 1002.1340 · arxiv_version: 1002.1340v1 · doi: 10.48550/arxiv.1002.1340 · pith_short_12: UGK6RNMEI3M2 · pith_short_16: UGK6RNMEI3M2MEWI · pith_short_8: UGK6RNME

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/UGK6RNMEI3M2MEWITXJCZJ7775 \
  | 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: a195e8b58446d9a612c89dd22ca7ffff61be96294156e209ad880c2c4821c42f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a8f2658eb4627dcea082f03fb5a3c88a5798ccaa5060fad70116a45afa8eba3a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-02-06T01:20:33Z",
    "title_canon_sha256": "1b5ac08f39dbac99e7835599c890d037322e3c8df1df66f580aa1c4237eee9fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.1340",
    "kind": "arxiv",
    "version": 1
  }
}