Pith Number

pith:VAN2T4EU

pith:1999:VAN2T4EUDLH2SDJRGFX632QAPO

not attested not anchored not stored refs pending

A speedy pixon image reconstruction algorithm

Vincent Eke

arxiv:astro-ph/9912078 v1 · 1999-12-03 · 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{VAN2T4EUDLH2SDJRGFX632QAPO}

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	2026-05-18T01:40:12.355622Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a81ba9f0941acfa90d31316fedea007b9e12776a8485864b6af71961a111e250

Aliases

arxiv: astro-ph/9912078 · arxiv_version: astro-ph/9912078v1 · doi: 10.48550/arxiv.astro-ph/9912078 · pith_short_12: VAN2T4EUDLH2 · pith_short_16: VAN2T4EUDLH2SDJR · pith_short_8: VAN2T4EU

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/VAN2T4EUDLH2SDJRGFX632QAPO \
  | 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: a81ba9f0941acfa90d31316fedea007b9e12776a8485864b6af71961a111e250

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "738df94a2b93caf963661ef917edfb1c5e54fd44fb928af5c50ef1b1fb1bfd35",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-12-03T22:12:23Z",
    "title_canon_sha256": "7cf9a3a8f43b19286fc9c3e002d6bf29c43a3bcd96e29040ff5bb5a15b7fddef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9912078",
    "kind": "arxiv",
    "version": 1
  }
}