Pith Number

pith:A3X74ZUY

pith:2011:A3X74ZUY2VCZWNA5DU3KV24MEP

not attested not anchored not stored refs pending

Three new bricks in the wall: Berkeley 23, Berkeley 31, and King 8

2), (2) INAF-Osservatorio Astronomico di Bologna, (3) ESO, Angela Bragaglia (2), Garching, Germany), Giacomo Beccari (3), Italy, Michele Cignoni (1, Monica Tosi (2) ((1) Dipartimento di Astronomia, Universita' di Bologna

arxiv:1105.4440 v1 · 2011-05-23 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A3X74ZUY2VCZWNA5DU3KV24MEP}

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	2026-05-18T02:01:52.731284Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

06effe6698d5459b341d1d36aaeb8c23e6bd623b862761c9d2b681b23968c26b

Aliases

arxiv: 1105.4440 · arxiv_version: 1105.4440v1 · doi: 10.48550/arxiv.1105.4440 · pith_short_12: A3X74ZUY2VCZ · pith_short_16: A3X74ZUY2VCZWNA5 · pith_short_8: A3X74ZUY

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/A3X74ZUY2VCZWNA5DU3KV24MEP \
  | 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: 06effe6698d5459b341d1d36aaeb8c23e6bd623b862761c9d2b681b23968c26b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b72572c7017ae7da54669a3bb5fb1cf272bc49e5d75d3c5fa9340e6111ae6f21",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-05-23T09:11:13Z",
    "title_canon_sha256": "ee654749e3cd79b67098892950b3eb27c347df9d1c7050a4c9da8eb49a01c8eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.4440",
    "kind": "arxiv",
    "version": 1
  }
}