Pith Number

pith:75DKUFD3

pith:2020:75DKUFD3WSQZ5VB3CMQHQ6DOW5

not attested not anchored not stored refs pending

An ALMA Survey of H$_2$CO in Protoplanetary Disks

Chunhua Qi, David J. Wilner, Geoffrey A. Blake, Jamila Pegues, Jane Huang, Jennifer B. Bergner, Jes K. J{\o}rgensen, John M. Carpenter, Jonathan P. Williams, Kamber R. Schwarz, Karin I. \"Oberg, L. Ilsedore Cleeves, Romane Le Gal, Ryan A. Loomis, Sean M. Andrews, Viviana V. Guzm\'an

arxiv:2002.12525 v1 · 2020-02-28 · astro-ph.SR · astro-ph.EP · 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{75DKUFD3WSQZ5VB3CMQHQ6DOW5}

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.

Cited by

1 paper in Pith

Ionized gas emission in protoplanetary disks with the SKAO

Receipt and verification

First computed	2026-07-05T00:44:31.095220Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ff46aa147bb4a19ed43b132078786eb74e28d0e7f58b9e5f0910160052f76b16

Aliases

arxiv: 2002.12525 · arxiv_version: 2002.12525v1 · doi: 10.48550/arxiv.2002.12525 · pith_short_12: 75DKUFD3WSQZ · pith_short_16: 75DKUFD3WSQZ5VB3 · pith_short_8: 75DKUFD3

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/75DKUFD3WSQZ5VB3CMQHQ6DOW5 \
  | 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: ff46aa147bb4a19ed43b132078786eb74e28d0e7f58b9e5f0910160052f76b16

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "198cbb79384aa6ff7d4cce0d9feb7b3a4c8e8c325fb779b701aea3e08fa2abab",
    "cross_cats_sorted": [
      "astro-ph.EP",
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2020-02-28T03:29:39Z",
    "title_canon_sha256": "fa8c73ab38cc453c3b601d87debad321587f5c674ffa3ea6f20581dd7cc29103"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.12525",
    "kind": "arxiv",
    "version": 1
  }
}