Pith Number

pith:GRY4NBCE

pith:2017:GRY4NBCEXHY65WCCZ6DVTURI4G

not attested not anchored not stored refs pending

ALMA unveils rings and gaps in the protoplanetary system HD 169142: signatures of two giant protoplanets

3), 5) ((1) INAF-Osservatorio Astrofisico di Arcetri (2) Leiden Observatory, A. Miotello (2), Astronomy, C. Walsh (2, D. Fedele (1), E.F. vanDishoeck (2, Leiden University (3) School of Physics, M. Carney (2), M. R. Hogerheijde (2), P. Klaassen (4), Royal Observatory Edinburgh (5) Max Planck Institut f\"ur Extraterrestrische Physik (6) Max-Planck-Institute for Astronomy), S. Bruderer (5), Th. Henning (6), University of Leeds (4) UK Astronomy Technology Centre

arxiv:1702.02844 v1 · 2017-02-09 · 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{GRY4NBCEXHY65WCCZ6DVTURI4G}

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	2026-05-18T00:47:03.517456Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3471c68444b9f1eed842cf8759d228e19446b737759dd0067612330bc214c393

Aliases

arxiv: 1702.02844 · arxiv_version: 1702.02844v1 · doi: 10.48550/arxiv.1702.02844 · pith_short_12: GRY4NBCEXHY6 · pith_short_16: GRY4NBCEXHY65WCC · pith_short_8: GRY4NBCE

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/GRY4NBCEXHY65WCCZ6DVTURI4G \
  | 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: 3471c68444b9f1eed842cf8759d228e19446b737759dd0067612330bc214c393

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "02a330096292464a40d1dc6346691eb48b3c0b69738a284331622870f3cf3726",
    "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": "2017-02-09T14:26:39Z",
    "title_canon_sha256": "7b7abbc3c5df4ee440a0fea9c00c388bd93533a53506397ea07818aaa7958360"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.02844",
    "kind": "arxiv",
    "version": 1
  }
}