Pith Number

pith:HWXZPSWV

pith:2009:HWXZPSWVWV6QZYAK4OSVIKD2EH

not attested not anchored not stored refs pending

Fresnel zone plates for Achromatic Imaging Survey of X-ray sources

A. Nandi, D. Debnath, S. K. Chakrabarti, S. Palit, V. Yadav

arxiv:0903.1540 v1 · 2009-03-09 · 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{HWXZPSWVWV6QZYAK4OSVIKD2EH}

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	2026-05-18T04:33:39.999527Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3daf97cad5b57d0ce00ae3a554287a21d52d7ff272d7064bb4212ea954544f78

Aliases

arxiv: 0903.1540 · arxiv_version: 0903.1540v1 · doi: 10.48550/arxiv.0903.1540 · pith_short_12: HWXZPSWVWV6Q · pith_short_16: HWXZPSWVWV6QZYAK · pith_short_8: HWXZPSWV

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/HWXZPSWVWV6QZYAK4OSVIKD2EH \
  | 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: 3daf97cad5b57d0ce00ae3a554287a21d52d7ff272d7064bb4212ea954544f78

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cb3d6a5ce2c538a845d9da971c4082e712dc7626c13e82746de1e536de74227c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2009-03-09T12:07:02Z",
    "title_canon_sha256": "847cc2d3e62529a5e309e1486840ca8ed0a926a24ba2a29ac3a14f562799e41b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.1540",
    "kind": "arxiv",
    "version": 1
  }
}