Pith Number

pith:HJ2M5DX7

pith:2011:HJ2M5DX7OCNLGLIKTAEA7NGEWM

not attested not anchored not stored refs pending

Ortho-H2 and the Age of Interstellar Dark Clouds

Evelyne Roueff (LUTH), Laurent Pagani (LERMA), Pierre Lesaffre (LERMA)

arxiv:1109.6495 v1 · 2011-09-29 · 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{HJ2M5DX7OCNLGLIKTAEA7NGEWM}

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	2026-05-18T04:12:01.449531Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a74ce8eff709ab32d0a98080fb4c4b303022d47d32695b60827aa216b5d16a4

Aliases

arxiv: 1109.6495 · arxiv_version: 1109.6495v1 · doi: 10.48550/arxiv.1109.6495 · pith_short_12: HJ2M5DX7OCNL · pith_short_16: HJ2M5DX7OCNLGLIK · pith_short_8: HJ2M5DX7

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/HJ2M5DX7OCNLGLIKTAEA7NGEWM \
  | 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: 3a74ce8eff709ab32d0a98080fb4c4b303022d47d32695b60827aa216b5d16a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4060ae29f3bfbf5c12b0e5592aac349ed58ffbbca46345522d744619e3f4ca0d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-09-29T11:50:57Z",
    "title_canon_sha256": "2cfb0086e900dd51d486ac4b70a7e8b020dfa27b9f554c1e96d13a68fcb2a9e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.6495",
    "kind": "arxiv",
    "version": 1
  }
}