Pith Number

pith:IYDRVFF5

pith:2010:IYDRVFF5HWNZZBWBJ3PGO5XLOZ

not attested not anchored not stored refs pending

HD/H2 Molecular Clouds in the Early Universe: The Problem of Primordial Deuterium

A.V. Ivanchik, D.A. Varshalovich, S.A. Balashev

arxiv:1009.4186 v1 · 2010-09-21 · 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{IYDRVFF5HWNZZBWBJ3PGO5XLOZ}

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	2026-05-18T04:40:34.435404Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

46071a94bd3d9b9c86c14ede6776eb765ce077dbc2f32d2fa23a5eaeba7d33ab

Aliases

arxiv: 1009.4186 · arxiv_version: 1009.4186v1 · doi: 10.48550/arxiv.1009.4186 · pith_short_12: IYDRVFF5HWNZ · pith_short_16: IYDRVFF5HWNZZBWB · pith_short_8: IYDRVFF5

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/IYDRVFF5HWNZZBWBJ3PGO5XLOZ \
  | 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: 46071a94bd3d9b9c86c14ede6776eb765ce077dbc2f32d2fa23a5eaeba7d33ab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dcdf757e59f8d8be761c7234107cdb8924f68e370f7f5ef9c0e21ff673c44821",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-09-21T19:54:53Z",
    "title_canon_sha256": "37967cda68b206338056cb79f81249f4d1b3c96c7b3d6308a5bc59db11e565cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.4186",
    "kind": "arxiv",
    "version": 1
  }
}