Pith Number

pith:EZ6HG43A

pith:2014:EZ6HG43AD5EBXSAKXBXKDTGTLK

not attested not anchored not stored refs pending

Automated Alignment and On-Sky Performance of the Gemini Planet Imager Coronagraph

Andrew Cardwell, Andrew Serio, Bruce A. Macintosh, Daren Dillon, Dmitry Savransky, Fredrik Rantakyr\"o, Jennifer Dunn, Lisa A. Poyneer, Markus Hartung, Naru Sadakuni, Pascale Hibon, Sandrine J. Thomas, Stephen J. Goodsell, with the GPI team

arxiv:1407.2313 v1 · 2014-07-09 · astro-ph.IM · astro-ph.EP

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	2026-05-18T01:42:38.848194Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

267c7373601f481bc80ab86ea1ccd35a9819f0ef34f4424d30d38a59acd40047

Aliases

arxiv: 1407.2313 · arxiv_version: 1407.2313v1 · doi: 10.48550/arxiv.1407.2313 · pith_short_12: EZ6HG43AD5EB · pith_short_16: EZ6HG43AD5EBXSAK · pith_short_8: EZ6HG43A

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/EZ6HG43AD5EBXSAKXBXKDTGTLK \
  | 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: 267c7373601f481bc80ab86ea1ccd35a9819f0ef34f4424d30d38a59acd40047

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "48a3fa4ea4d0fd2883f1cbc07f73c99d8780c28c6ffc10a70f01b9f267e7932c",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2014-07-09T00:02:43Z",
    "title_canon_sha256": "823ba78079ba961e7bd6c6d750cc2577539c119938cf6c2ec111f6a8c8725a64"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.2313",
    "kind": "arxiv",
    "version": 1
  }
}