Pith Number

pith:EVY5NPMQ

pith:2012:EVY5NPMQRARL4QJTHN4TF42CS3

not attested not anchored not stored refs pending

Inside catalogs: a comparison of source extraction software

A. Mercurio, G. Longo, M. Annunziatella, M. Brescia, S. Cavuoti

arxiv:1212.0564 v1 · 2012-12-03 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EVY5NPMQRARL4QJTHN4TF42CS3}

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	2026-05-18T01:52:48.157089Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2571d6bd908822be41333b7932f34296d2ef8c4977086f8578131074653e5360

Aliases

arxiv: 1212.0564 · arxiv_version: 1212.0564v1 · doi: 10.48550/arxiv.1212.0564 · pith_short_12: EVY5NPMQRARL · pith_short_16: EVY5NPMQRARL4QJT · pith_short_8: EVY5NPMQ

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/EVY5NPMQRARL4QJTHN4TF42CS3 \
  | 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: 2571d6bd908822be41333b7932f34296d2ef8c4977086f8578131074653e5360

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b471dec5c84d5edad29b7685d0395fbd12fc51eb258e509168f4e2d4430b4832",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2012-12-03T21:28:22Z",
    "title_canon_sha256": "f54ed8e734a238fb6c6223cf2c1547607ffbd0bde8782954184cd196948a206b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.0564",
    "kind": "arxiv",
    "version": 1
  }
}