Pith Number

pith:64GV6E22

pith:2008:64GV6E22RPQ7FPJDLVYZWLNTFZ

not attested not anchored not stored refs pending

Nulling interferometry: performance comparison between space and ground-based sites for exozodiacal disc detection

D. Defr\`ere, O. Absil, R. den Hartog, V. Coud\'e du Foresto, W.C. Danchi

arxiv:0808.3713 v1 · 2008-08-27 · 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{64GV6E22RPQ7FPJDLVYZWLNTFZ}

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	2026-07-04T17:12:29.442434Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f70d5f135a8be1f2bd235d719b2db32e6abc241dbcb186002c21fd0aa2017838

Aliases

arxiv: 0808.3713 · arxiv_version: 0808.3713v1 · doi: 10.48550/arxiv.0808.3713 · pith_short_12: 64GV6E22RPQ7 · pith_short_16: 64GV6E22RPQ7FPJD · pith_short_8: 64GV6E22

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/64GV6E22RPQ7FPJDLVYZWLNTFZ \
  | 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: f70d5f135a8be1f2bd235d719b2db32e6abc241dbcb186002c21fd0aa2017838

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "429286ce57585f6c77e4d29b06a97553c35d1e2dead4af818c1ff92486d64a4f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-08-27T13:53:21Z",
    "title_canon_sha256": "7788408fb5e358ee73be0cf7b85ce1b9cbf135069a2d561716d4e694c77907b2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0808.3713",
    "kind": "arxiv",
    "version": 1
  }
}