Pith Number

pith:QVJ2SZ5P

pith:2004:QVJ2SZ5PYWFJ4LMX7QD63DKKKX

not attested not anchored not stored refs pending

Laboratory coded aperture imaging experiments: radial hole coded masks and depth-sensitive CZT detectors

A. Yousef, E. C. Bellm, J. E. Grindlay, J. Hong, J. Noss, M. Zhang, S. V. Vadawale, T. Narita

arxiv:astro-ph/0409002 v1 · 2004-08-31 · 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{QVJ2SZ5PYWFJ4LMX7QD63DKKKX}

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	2026-07-04T16:44:35.936300Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8553a967afc58a9e2d97fc07ed8d4a55f7f4a7eb357e6749952ba1cb4fbd77c5

Aliases

arxiv: astro-ph/0409002 · arxiv_version: astro-ph/0409002v1 · doi: 10.48550/arxiv.astro-ph/0409002 · pith_short_12: QVJ2SZ5PYWFJ · pith_short_16: QVJ2SZ5PYWFJ4LMX · pith_short_8: QVJ2SZ5P

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/QVJ2SZ5PYWFJ4LMX7QD63DKKKX \
  | 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: 8553a967afc58a9e2d97fc07ed8d4a55f7f4a7eb357e6749952ba1cb4fbd77c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7c0befb9280507a617e785cdb5d6c9980ddae9c2fa9b22b0166f24c4200c17c5",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-08-31T21:30:16Z",
    "title_canon_sha256": "0507c5c7de55b82731d636aae2bbc64658a657c5d804d224cc4af9f1aa7f05bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0409002",
    "kind": "arxiv",
    "version": 1
  }
}