Pith Number

pith:HKG53UQI

pith:2019:HKG53UQIHFYCH3UILYC4G2R2VB

not attested not anchored not stored refs pending

PDS 70: A transition disk sculpted by a single planet

Dhruv Muley, Jeffrey Fung, Nienke van der Marel

arxiv:1902.07191 v4 · 2019-02-19 · astro-ph.EP · 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{HKG53UQIHFYCH3UILYC4G2R2VB}

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	2026-05-17T23:41:12.032385Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a8dddd208397023ee885e05c36a3aa860fe774d3bd92bd373067a346a0da75a

Aliases

arxiv: 1902.07191 · arxiv_version: 1902.07191v4 · doi: 10.48550/arxiv.1902.07191 · pith_short_12: HKG53UQIHFYC · pith_short_16: HKG53UQIHFYCH3UI · pith_short_8: HKG53UQI

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/HKG53UQIHFYCH3UILYC4G2R2VB \
  | 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: 3a8dddd208397023ee885e05c36a3aa860fe774d3bd92bd373067a346a0da75a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0906e624cde95248c3f0d5ceb1b31e491c59144f1cd9848d7c958a9f8beeb97a",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2019-02-19T18:43:14Z",
    "title_canon_sha256": "5c10f1add9cd8586ff46906f65eaa0935acf5153eb6ee7c73f0ef9f20755216b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.07191",
    "kind": "arxiv",
    "version": 4
  }
}