Pith Number

pith:UGFNSCTJ

pith:2009:UGFNSCTJPRJV4XZLOPGXSDWQUR

not attested not anchored not stored refs pending

Emission Corrections for Hydrogen Features of the Graves et. al 2007 Sloan Digital Sky Survey Averages of Early Type, Non-liner Galaxies

Guy Worthey, Jedidiah Serven

arxiv:0912.0501 v1 · 2009-12-02 · 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{UGFNSCTJPRJV4XZLOPGXSDWQUR}

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	2026-05-18T02:10:34.489410Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a18ad90a697c535e5f2b73cd790ed0a4638ea3f95ac671251fd7bff5b9e3f306

Aliases

arxiv: 0912.0501 · arxiv_version: 0912.0501v1 · doi: 10.48550/arxiv.0912.0501 · pith_short_12: UGFNSCTJPRJV · pith_short_16: UGFNSCTJPRJV4XZL · pith_short_8: UGFNSCTJ

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/UGFNSCTJPRJV4XZLOPGXSDWQUR \
  | 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: a18ad90a697c535e5f2b73cd790ed0a4638ea3f95ac671251fd7bff5b9e3f306

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b90ab2917f38b529c09758a7380bdcfa92c0b46e7f8bb69879e0fa145fde3bc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-12-02T19:37:31Z",
    "title_canon_sha256": "bd79d1090d5c6f51ca93b2838f438115ea37de48d065a8d1545e0d4eb772333a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.0501",
    "kind": "arxiv",
    "version": 1
  }
}