Pith Number

pith:2ZLWKQZB

pith:2008:2ZLWKQZBM2VBBC6NONU6THA377

not attested not anchored not stored refs pending

Internal Extinction in the SDSS Late-Type Galaxies

Changbom Park, Jungyeon Cho

arxiv:0812.1618 v1 · 2008-12-09 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2ZLWKQZBM2VBBC6NONU6THA377}

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	2026-05-18T04:29:24.676486Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d65765432166aa108bcd7369e99c1bffd92884b95c53111fe11e881a9c9cd658

Aliases

arxiv: 0812.1618 · arxiv_version: 0812.1618v1 · doi: 10.48550/arxiv.0812.1618 · pith_short_12: 2ZLWKQZBM2VB · pith_short_16: 2ZLWKQZBM2VBBC6N · pith_short_8: 2ZLWKQZB

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/2ZLWKQZBM2VBBC6NONU6THA377 \
  | 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: d65765432166aa108bcd7369e99c1bffd92884b95c53111fe11e881a9c9cd658

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b2c36c3e22ece58eeb47d8a1b86c17f8b98fdd4d99edbc150a503a895f3c160",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-12-09T05:34:52Z",
    "title_canon_sha256": "c5130165f18f19a7aae9e8c9d2bc1c7df822deff52c22c08ab07af9b2c0b7599"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0812.1618",
    "kind": "arxiv",
    "version": 1
  }
}