Pith Number

pith:GVBRKPRP

pith:2009:GVBRKPRPJLJC7NHPOPVM5W3HHH

not attested not anchored not stored refs pending

Extreme Adaptive Optics in the mid-IR: The METIS AO system

B. Brandl, L. Jolissaint, L. Venema, R. Stuik, S. Hippler, S. Kendrew

arxiv:0909.3421 v1 · 2009-09-18 · 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{GVBRKPRPJLJC7NHPOPVM5W3HHH}

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	2026-05-18T02:11:46.485103Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3543153e2f4ad22fb4ef73eacedb6739cfe8ce06cd1158424c3e2eb6aac0f9bc

Aliases

arxiv: 0909.3421 · arxiv_version: 0909.3421v1 · doi: 10.48550/arxiv.0909.3421 · pith_short_12: GVBRKPRPJLJC · pith_short_16: GVBRKPRPJLJC7NHP · pith_short_8: GVBRKPRP

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/GVBRKPRPJLJC7NHPOPVM5W3HHH \
  | 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: 3543153e2f4ad22fb4ef73eacedb6739cfe8ce06cd1158424c3e2eb6aac0f9bc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2453a8be6b76be2760b2dac38ad26812eac643cf63d498a5b48e8401381610cc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2009-09-18T12:18:48Z",
    "title_canon_sha256": "5c8798e8866896b892fcfd97185293934c7d31bcbea6f8969d337622a109a6e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.3421",
    "kind": "arxiv",
    "version": 1
  }
}