Pith Number

pith:PUD77YAQ

pith:2009:PUD77YAQ3E5EI77RASYGOYGUTT

not attested not anchored not stored refs pending

I-GALFA: The Inner-Galaxy ALFA Low-Latitude H I Survey

Bon-Chul Koo, Carl E. Heiles, Eric J. Korpela, Geumsook Park, Ji-hyun Kang, Joshua E. G. Peek, Kevin A. Douglas, Steven J. Gibson, Thomas M. Bania

arxiv:0912.2388 v1 · 2009-12-12 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PUD77YAQ3E5EI77RASYGOYGUTT}

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	2026-05-18T02:10:24.280491Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d07ffe010d93a447ff104b06760d49cf9dcaa903c3c8636b791767c6b803e0d

Aliases

arxiv: 0912.2388 · arxiv_version: 0912.2388v1 · doi: 10.48550/arxiv.0912.2388 · pith_short_12: PUD77YAQ3E5E · pith_short_16: PUD77YAQ3E5EI77R · pith_short_8: PUD77YAQ

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/PUD77YAQ3E5EI77RASYGOYGUTT \
  | 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: 7d07ffe010d93a447ff104b06760d49cf9dcaa903c3c8636b791767c6b803e0d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5a0dbb69e0754a18be454897a25958a536a81e10f45f40f8aa2b2f13b0f7e11f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-12-12T01:34:01Z",
    "title_canon_sha256": "849b7e68a089bb657148332da636c836fb39e8d5cff00b8da76f525bce4b8b99"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.2388",
    "kind": "arxiv",
    "version": 1
  }
}