Pith Number

pith:ISGHSY4I

pith:2014:ISGHSY4IHM33SWOCL5QXSZDPIU

not attested not anchored not stored refs pending

On-sky performance during verification and commissioning of the Gemini Planet Imager's adaptive optics system

Andrew Cardwell, Brian Bauman, Bruce Macintosh, Daren Dillon, David W. Palmer, Dmitry Savransky, Donald Gavel, Fredrik T. Rantakyro, Jean-Pierre Veran, Jeffrey K. Chilcote, Lisa A. Poyneer, Markus Hartung, Marshall D. Perrin, Naru Sadakuni, Pascale Hibon, Robert J. De Rosa, Sandrine Thomas, Stephen J. Goodsell

arxiv:1407.2278 v1 · 2014-07-08 · astro-ph.IM

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

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	2026-05-18T01:42:40.628893Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

448c7963883b37b959c25f6179646f450176fda4c11c2edceae3515eb609b0f8

Aliases

arxiv: 1407.2278 · arxiv_version: 1407.2278v1 · doi: 10.48550/arxiv.1407.2278 · pith_short_12: ISGHSY4IHM33 · pith_short_16: ISGHSY4IHM33SWOC · pith_short_8: ISGHSY4I

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/ISGHSY4IHM33SWOCL5QXSZDPIU \
  | 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: 448c7963883b37b959c25f6179646f450176fda4c11c2edceae3515eb609b0f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "85a675c52c20ee6fbaf76f51f80a9a4d4444a0e3dbda3ac7da0ccccaa4fe083e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2014-07-08T21:30:54Z",
    "title_canon_sha256": "71409432fd951f27c101907453c16211122dc9df8cfe077b73e1b88078d9471e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.2278",
    "kind": "arxiv",
    "version": 1
  }
}