Pith Number

pith:4R2AYAGP

pith:2003:4R2AYAGPYFT5UUE63WBXZ26LLQ

not attested not anchored not stored refs pending

The Physical and Chemical Status of Pre-protostellar Core B68

Shih-Ping Lai, T. B. H. Kuiper, T. Velusamy, W. D. Langer

arxiv:astro-ph/0303642 v1 · 2003-03-28 · 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{4R2AYAGPYFT5UUE63WBXZ26LLQ}

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	2026-07-04T16:36:45.708377Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4740c00cfc167da509edd837cebcb5c0efd96bb59c31a9304064ccc3238a08f

Aliases

arxiv: astro-ph/0303642 · arxiv_version: astro-ph/0303642v1 · doi: 10.48550/arxiv.astro-ph/0303642 · pith_short_12: 4R2AYAGPYFT5 · pith_short_16: 4R2AYAGPYFT5UUE6 · pith_short_8: 4R2AYAGP

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/4R2AYAGPYFT5UUE63WBXZ26LLQ \
  | 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: e4740c00cfc167da509edd837cebcb5c0efd96bb59c31a9304064ccc3238a08f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c7d33c9400162b3d5dabff681b8ae87b27e4a931e9d6707a4939d485e4327dc0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-03-28T22:24:29Z",
    "title_canon_sha256": "322158db505b2b569f2df8e41e5079707254eb22a97c2aee93a286dfbd9464db"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0303642",
    "kind": "arxiv",
    "version": 1
  }
}