Pith Number

pith:GPVBA52I

pith:2007:GPVBA52IWV4YWWAAA7LKZD4MKE

not attested not anchored not stored refs pending

A new algorithm for point spread function subtraction in high-contrast imaging: a demonstration with angular differential imaging

Christian Marois, Daniel Nadeau, David Lafreniere, Etienne Artigau, Rene Doyon

arxiv:astro-ph/0702697 v1 · 2007-02-26 · 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{GPVBA52IWV4YWWAAA7LKZD4MKE}

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	2026-05-18T04:29:06.205090Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

33ea107748b5798b580007d6ac8f8c511daf3f6e599941a9d44ba625fe56912a

Aliases

arxiv: astro-ph/0702697 · arxiv_version: astro-ph/0702697v1 · doi: 10.48550/arxiv.astro-ph/0702697 · pith_short_12: GPVBA52IWV4Y · pith_short_16: GPVBA52IWV4YWWAA · pith_short_8: GPVBA52I

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/GPVBA52IWV4YWWAAA7LKZD4MKE \
  | 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: 33ea107748b5798b580007d6ac8f8c511daf3f6e599941a9d44ba625fe56912a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3ee376b8e1df60d220b9ec0eb691b365e4aa28216ee9b68dfbf8351ead7aa208",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-02-26T22:38:45Z",
    "title_canon_sha256": "254769e6d1b7eeda055defe0fea958a61a00959de644d0bf1361dbb5a7f762ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0702697",
    "kind": "arxiv",
    "version": 1
  }
}