Pith Number

pith:NIWDUAYL

pith:2011:NIWDUAYLX247RUUO6645Q2BSFL

not attested not anchored not stored refs pending

VLT/NACO astrometry of the HR8799 planetary system. L'-band observations of the three outer planets

C. Bergfors, M. Janson, R. K\"ohler, T. Henning, W. Brandner

arxiv:1102.5330 v2 · 2011-02-25 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NIWDUAYLX247RUUO6645Q2BSFL}

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	2026-05-18T02:03:04.571306Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a2c3a030bbeb9f8d28ef7b9d868322aee2773b8dbe64d0598461408486362bf

Aliases

arxiv: 1102.5330 · arxiv_version: 1102.5330v2 · doi: 10.48550/arxiv.1102.5330 · pith_short_12: NIWDUAYLX247 · pith_short_16: NIWDUAYLX247RUUO · pith_short_8: NIWDUAYL

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/NIWDUAYLX247RUUO6645Q2BSFL \
  | 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: 6a2c3a030bbeb9f8d28ef7b9d868322aee2773b8dbe64d0598461408486362bf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "34c4b957ec065577e13a234ebf31b039571e00c2af34ab8b16c3000a76f03fb7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2011-02-25T20:32:52Z",
    "title_canon_sha256": "e75b736d7d6710d46b72a7bc598b23bc5a915cae72c509dd6c4842c22bb2faf8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.5330",
    "kind": "arxiv",
    "version": 2
  }
}