Pith Number

pith:VVUFZZSB

pith:2018:VVUFZZSBPCKKQT4A7GXYLSZCZH

not attested not anchored not stored refs pending

Adaptive Optics for Extremely Large Telescopes

Stefan Hippler

arxiv:1808.02693 v2 · 2018-08-08 · 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{VVUFZZSBPCKKQT4A7GXYLSZCZH}

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	2026-05-17T23:55:42.664965Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad685ce6417894a84f80f9af85cb22c9d18a53707b45251c212c8b0e4187653f

Aliases

arxiv: 1808.02693 · arxiv_version: 1808.02693v2 · doi: 10.48550/arxiv.1808.02693 · pith_short_12: VVUFZZSBPCKK · pith_short_16: VVUFZZSBPCKKQT4A · pith_short_8: VVUFZZSB

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/VVUFZZSBPCKKQT4A7GXYLSZCZH \
  | 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: ad685ce6417894a84f80f9af85cb22c9d18a53707b45251c212c8b0e4187653f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5fee56be5c48f937e456cc206b400f4e4b737f2cfbd7af03c0bd5be1497c4991",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-08-08T09:49:58Z",
    "title_canon_sha256": "02cf7f138bc28856778f95bff7d5a475aa138d74ef6f0e00cebd6b848c30638f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.02693",
    "kind": "arxiv",
    "version": 2
  }
}