Pith Number

pith:TGRYEPQR

pith:2007:TGRYEPQRUTZNVXWQMX43UV24ZS

not attested not anchored not stored refs pending

Nulling interferometry: performance comparison between Antarctica and other ground-based sites

M. Barillot, M. R. Swain, O. Absil, V. Coude du Foresto

arxiv:0709.2563 v1 · 2007-09-17 · astro-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{TGRYEPQRUTZNVXWQMX43UV24ZS}

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	2026-07-04T17:05:44.069251Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

99a3823e11a4f2daded065f9ba575ccc97679de50ebe53b666329261ebf0c91b

Aliases

arxiv: 0709.2563 · arxiv_version: 0709.2563v1 · doi: 10.48550/arxiv.0709.2563 · pith_short_12: TGRYEPQRUTZN · pith_short_16: TGRYEPQRUTZNVXWQ · pith_short_8: TGRYEPQR

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/TGRYEPQRUTZNVXWQMX43UV24ZS \
  | 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: 99a3823e11a4f2daded065f9ba575ccc97679de50ebe53b666329261ebf0c91b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "098dbfd7f8480af011ef823151fa11f9be382617b66072a67b23ce6a2b44a07b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-09-17T09:27:15Z",
    "title_canon_sha256": "2dcd40c9f9d13366c26f2afbb236c3a7284ffa447709e5840307c554963cb461"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0709.2563",
    "kind": "arxiv",
    "version": 1
  }
}