Pith Number

pith:TUWAEBPW

pith:2018:TUWAEBPWSJ5G2HJ57KXE2CEI7I

not attested not anchored not stored refs pending

Production of atomic hydrogen by cosmic rays in dark clouds

(2) Max-Planck-Institut f\"ur extraterrestrische Physik, (3) Scuola Normale Superiore, Alexei V. Ivlev (2), Andrea Ferrara (3) ((1) INAF-Osservatorio Astrofisico di Arcetri, Daniele Galli (1), Firenze, Garching, Germany, Italy, Italy), Marco Padovani (1), Paola Caselli (2), Pisa

arxiv:1809.04168 v1 · 2018-09-11 · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TUWAEBPWSJ5G2HJ57KXE2CEI7I}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:00:18.104019Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9d2c0205f6927a6d1d3dfaae4d0888fa270db8f3d1d5a28e7931e432472c7708

Aliases

arxiv: 1809.04168 · arxiv_version: 1809.04168v1 · doi: 10.48550/arxiv.1809.04168 · pith_short_12: TUWAEBPWSJ5G · pith_short_16: TUWAEBPWSJ5G2HJ5 · pith_short_8: TUWAEBPW

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/TUWAEBPWSJ5G2HJ57KXE2CEI7I \
  | 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: 9d2c0205f6927a6d1d3dfaae4d0888fa270db8f3d1d5a28e7931e432472c7708

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c5fea42c1336753da6001b9adf37fd74418400f11e3347f36c2a6a012690ef96",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-09-11T21:15:28Z",
    "title_canon_sha256": "9498280a3f1d675527e6ef6d6859b2f4567383d5e17b946a93f47a3802e682e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.04168",
    "kind": "arxiv",
    "version": 1
  }
}