Pith Number

pith:Q2ZYWAIR

pith:2022:Q2ZYWAIRMQ52RSHO4JCBOZLXSW

not attested not anchored not stored refs pending

Detection of HC18O+ in a protoplanetary disk: exploring oxygen isotope fractionation of CO

Chunhua Qi, Hideko Nomura, Kenji Furuya, L. Ilsedore Cleeves, Seokho Lee, Takashi Tsukagoshi, Tomohiro C. Yoshida

arxiv:2201.00935 v1 · 2022-01-04 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Q2ZYWAIRMQ52RSHO4JCBOZLXSW}

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	2026-07-05T04:01:07.747762Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

86b38b0111643ba8c8eee24417657795ad9a1d731d1dd3fd68fb058e3c9616ec

Aliases

arxiv: 2201.00935 · arxiv_version: 2201.00935v1 · doi: 10.48550/arxiv.2201.00935 · pith_short_12: Q2ZYWAIRMQ52 · pith_short_16: Q2ZYWAIRMQ52RSHO · pith_short_8: Q2ZYWAIR

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/Q2ZYWAIRMQ52RSHO4JCBOZLXSW \
  | 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: 86b38b0111643ba8c8eee24417657795ad9a1d731d1dd3fd68fb058e3c9616ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fd592411539e7d524974a88592b9d91fb44a31de5468badc121db008a1a8edf0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2022-01-04T01:54:33Z",
    "title_canon_sha256": "fbd0a00df0a315cd38797b2d2c7b62a4378b2ecc25bfd57a21a67b48caefc56f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2201.00935",
    "kind": "arxiv",
    "version": 1
  }
}