Pith Number

pith:ZXIZF2NQ

pith:2018:ZXIZF2NQVNMH7SANQ5JL3NXDGT

not attested not anchored not stored refs pending

Upgrading the Gemini Planet Imager: GPI 2.0

Andrew Norton, Bruce Macintosh, Christian Marois, Dmitry Savransky, Eric Nielsen, James Graham, Jean-Pierre Veran, Jeffrey K. Chilcote, Julien Rameau, Laurent Pueyo, Maxwell A. Millar-Blanchaer, Rob De Rosa, Vanessa P. Bailey

arxiv:1807.07145 v1 · 2018-07-18 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZXIZF2NQVNMH7SANQ5JL3NXDGT}

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	2026-05-18T00:10:21.148956Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cdd192e9b0ab587fc80d8752bdb6e334ceac96341132774bc15dfb382b4848c9

Aliases

arxiv: 1807.07145 · arxiv_version: 1807.07145v1 · doi: 10.48550/arxiv.1807.07145 · pith_short_12: ZXIZF2NQVNMH · pith_short_16: ZXIZF2NQVNMH7SAN · pith_short_8: ZXIZF2NQ

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/ZXIZF2NQVNMH7SANQ5JL3NXDGT \
  | 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: cdd192e9b0ab587fc80d8752bdb6e334ceac96341132774bc15dfb382b4848c9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d1753b372dd40a86298f327fa0df82ec89fb5e38a97cb2f65b7ff4a57a7e033d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-07-18T21:05:01Z",
    "title_canon_sha256": "495be34598600422f2d82ac7ac20eed18c757104049cec99ec211a4a42256154"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.07145",
    "kind": "arxiv",
    "version": 1
  }
}