Pith Number

pith:HCXD4NVL

pith:2009:HCXD4NVLNPODAXVHNZ75HWUHYB

not attested not anchored not stored refs pending

A Fast Onboard Star-Extraction Algorithm Optimized for the SVOM Visible Telescope

H. Cai, J. Deng, T. Wang, Y. Qiu

arxiv:0907.1330 v1 · 2009-07-08 · astro-ph.IM · astro-ph.HE

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HCXD4NVLNPODAXVHNZ75HWUHYB}

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	2026-05-18T02:34:39.030381Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

38ae3e36ab6bdc305ea76e7fd3da87c06ba47dbd611033d5a7b91fe118d025fb

Aliases

arxiv: 0907.1330 · arxiv_version: 0907.1330v1 · doi: 10.48550/arxiv.0907.1330 · pith_short_12: HCXD4NVLNPOD · pith_short_16: HCXD4NVLNPODAXVH · pith_short_8: HCXD4NVL

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/HCXD4NVLNPODAXVHNZ75HWUHYB \
  | 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: 38ae3e36ab6bdc305ea76e7fd3da87c06ba47dbd611033d5a7b91fe118d025fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a9cd7beea542d4458eacf87dcee9cb5b6ea6ab7de2d468eac2a60e894f63a701",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2009-07-08T02:04:57Z",
    "title_canon_sha256": "dc91b66f569f0bb2b54adb4d35fd74f39d0537983114a170307e4b43a9fef8e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.1330",
    "kind": "arxiv",
    "version": 1
  }
}