Pith Number

pith:DDPGFR4I

pith:2013:DDPGFR4IMFUDJP7AADJQH7DS5N

not attested not anchored not stored refs pending

Chemical evolution during the process of proto-star formation by considering a two dimensional hydrodynamic model

Ankan Das, Liton Majumdar, Sandip K. Chakrabarti, Sonali Chakrabarti

arxiv:1306.0085 v1 · 2013-06-01 · astro-ph.GA · 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{DDPGFR4IMFUDJP7AADJQH7DS5N}

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	2026-05-18T03:21:56.181598Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18de62c788616834bfe000d303fc72eb7a6f970d62dea396c04439e3fcd45513

Aliases

arxiv: 1306.0085 · arxiv_version: 1306.0085v1 · doi: 10.48550/arxiv.1306.0085 · pith_short_12: DDPGFR4IMFUD · pith_short_16: DDPGFR4IMFUDJP7A · pith_short_8: DDPGFR4I

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/DDPGFR4IMFUDJP7AADJQH7DS5N \
  | 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: 18de62c788616834bfe000d303fc72eb7a6f970d62dea396c04439e3fcd45513

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "483e7c18263f2a909ad2c7f199188d6136494da0b20259b855ba7d88a2a03cc1",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-06-01T07:30:53Z",
    "title_canon_sha256": "2e5b566eddbdbbf93ea48b80e53fb8f773c2e19e93122ae45fe1db31a903e117"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.0085",
    "kind": "arxiv",
    "version": 1
  }
}