Pith Number

pith:LPUNHFJH

pith:2015:LPUNHFJHSRAGGE2ZU5VZARJSWE

not attested not anchored not stored refs pending

How to coadd images? I. Optimal source detection and photometry using ensembles of images

Barak Zackay, Eran O. Ofek

arxiv:1512.06872 v1 · 2015-12-21 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LPUNHFJHSRAGGE2ZU5VZARJSWE}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:20:07.685983Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5be8d395279440631359a76b904532b11fa2a3d6d09e23afdad92072c9bdc390

Aliases

arxiv: 1512.06872 · arxiv_version: 1512.06872v1 · doi: 10.48550/arxiv.1512.06872 · pith_short_12: LPUNHFJHSRAG · pith_short_16: LPUNHFJHSRAGGE2Z · pith_short_8: LPUNHFJH

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/LPUNHFJHSRAGGE2ZU5VZARJSWE \
  | 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: 5be8d395279440631359a76b904532b11fa2a3d6d09e23afdad92072c9bdc390

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a22812914b6b947c16884075420e29f96f9bfc061ad3c2ab2ff9082dd0b8ad84",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2015-12-21T21:11:36Z",
    "title_canon_sha256": "575e8cb2db888f522d5d54000741dd0a81b19a781864b816d20f0e1b4d3a7188"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.06872",
    "kind": "arxiv",
    "version": 1
  }
}