Pith Number

pith:W4WJCGJT

pith:2011:W4WJCGJTOEHW263BJTEMCXQG5Y

not attested not anchored not stored refs pending

The Adaptive Optics Summer School Laboratory Activities

Adam Hickenbotham, Andrew Norton, Austin Roorda, David Harrington, Ethan Rossi, Holly Maness, Ian Crossfield, J. D. Armstrong, Jennifer Hunter, Jessica Lu, Jess Johnson, Kaccie Li, Katie Morzinski, Luke Johnson, Mike Fitzgerald, Nicole Putnam, Scott Severson, S. Mark Ammons, Sylvana Yelda, Tuan Do

arxiv:1111.2015 v1 · 2011-11-08 · physics.ed-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W4WJCGJTOEHW263BJTEMCXQG5Y}

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	2026-05-18T04:09:03.601451Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b72c911933710f6d7b614cc8c15e06ee031cb95fd5db79c9ba7322ab15fccc79

Aliases

arxiv: 1111.2015 · arxiv_version: 1111.2015v1 · doi: 10.48550/arxiv.1111.2015 · pith_short_12: W4WJCGJTOEHW · pith_short_16: W4WJCGJTOEHW263B · pith_short_8: W4WJCGJT

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/W4WJCGJTOEHW263BJTEMCXQG5Y \
  | 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: b72c911933710f6d7b614cc8c15e06ee031cb95fd5db79c9ba7322ab15fccc79

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f2a69a9bfc2680596f6f82efaa05137784c43405ee39cea38a51a819d16330f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2011-11-08T19:04:56Z",
    "title_canon_sha256": "8125c2c5c9b2f94a883a8baeaf8edeece6c8c5a176cf29ab3fb3a0df1b92a29b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.2015",
    "kind": "arxiv",
    "version": 1
  }
}