Pith Number

pith:PC6USKGN

pith:2022:PC6USKGNWL36OJJTMUPPMMBL6Z

not attested not anchored not stored refs pending

PDFchem: A new fast method to determine ISM properties and infer environmental parameters using probability distributions

Andreas Schruba, Chia-Yu Hu, Ewine F. van Dishoeck, Thomas G. Bisbas

arxiv:2211.12974 v1 · 2022-11-23 · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PC6USKGNWL36OJJTMUPPMMBL6Z}

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	2026-07-05T05:23:01.282734Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78bd4928cdb2f7e72533651ef6302bf654233636ccb1b01e0564a6855c6bc1f8

Aliases

arxiv: 2211.12974 · arxiv_version: 2211.12974v1 · doi: 10.48550/arxiv.2211.12974 · pith_short_12: PC6USKGNWL36 · pith_short_16: PC6USKGNWL36OJJT · pith_short_8: PC6USKGN

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/PC6USKGNWL36OJJTMUPPMMBL6Z \
  | 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: 78bd4928cdb2f7e72533651ef6302bf654233636ccb1b01e0564a6855c6bc1f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "63b9aba7608a48464b28530d11d559d09cd7f806269c1201ab055c5abac27ca5",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2022-11-23T14:29:31Z",
    "title_canon_sha256": "81b16ce59c7f92b8fc9f095f572abc25d3157ff28cc0e781b3af77f3ed190de6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2211.12974",
    "kind": "arxiv",
    "version": 1
  }
}