Pith Number

pith:VPXFGWSS

pith:2018:VPXFGWSSBTNFG3RM26STDVXIWD

not attested not anchored not stored refs pending

H2 chemistry in interstellar ices: the case of CO ice hydrogenation in UV irradiated CO:H2 ice mixtures

D. Qasim, E. F. van Dishoeck, G. Fedoseev, H. Linnartz, K.-J. Chuang, S. Ioppolo

arxiv:1809.10507 v1 · 2018-09-27 · astro-ph.SR · 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{VPXFGWSSBTNFG3RM26STDVXIWD}

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	2026-05-18T00:04:38.189914Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

abee535a520cda536e2cd7a531d6e8b0e3f12d97494fb36da1f2fe049dc90800

Aliases

arxiv: 1809.10507 · arxiv_version: 1809.10507v1 · doi: 10.48550/arxiv.1809.10507 · pith_short_12: VPXFGWSSBTNF · pith_short_16: VPXFGWSSBTNFG3RM · pith_short_8: VPXFGWSS

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/VPXFGWSSBTNFG3RM26STDVXIWD \
  | 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: abee535a520cda536e2cd7a531d6e8b0e3f12d97494fb36da1f2fe049dc90800

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "54cfe06b9f6ce3b852da5c1be4928e6867bfd0ca73ad2722573593ce6dbdf877",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-09-27T13:24:23Z",
    "title_canon_sha256": "f41be1c6317eda53ccaf15098332359b2705331ed9d9e4b4ae2cafdbe61f18ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.10507",
    "kind": "arxiv",
    "version": 1
  }
}