Pith Number

pith:E52F67F2

pith:2008:E52F67F27IFGQNSL2Y7U7O2QJQ

not attested not anchored not stored refs pending

Computing extinction maps of star nulling interferometers

Francois Henault

arxiv:0802.2054 v1 · 2008-02-14 · physics.optics · 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{E52F67F27IFGQNSL2Y7U7O2QJQ}

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	2026-05-18T04:14:36.637052Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

27745f7cbafa0a68364bd63f4fbb504c2690d65e8e7ecc047cb47a5638abb1bc

Aliases

arxiv: 0802.2054 · arxiv_version: 0802.2054v1 · doi: 10.48550/arxiv.0802.2054 · pith_short_12: E52F67F27IFG · pith_short_16: E52F67F27IFGQNSL · pith_short_8: E52F67F2

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/E52F67F27IFGQNSL2Y7U7O2QJQ \
  | 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: 27745f7cbafa0a68364bd63f4fbb504c2690d65e8e7ecc047cb47a5638abb1bc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "09da84f06e743a12918f3eb1a0be94ab89277a6167edeb9cbc4e139a6f7356e7",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2008-02-14T16:57:25Z",
    "title_canon_sha256": "67422870f1f72c204d45e6df44e1b3c64f18b62f639e36a1ebec88f159bb4478"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0802.2054",
    "kind": "arxiv",
    "version": 1
  }
}