Pith Number

pith:BOIDTUCD

pith:2018:BOIDTUCD3MHQ4SGDBKEAPQVSAT

not attested not anchored not stored refs pending

3C 17: The BCG of a galaxy cluster at z=0.22

Alberto Rodriguez-Ardila (LNA, Alessandro Paggi (INAF, Argentina), Australia), Brazil), Carlos J. Donzelli (Cordoba Observatory, Francesco Massaro (INAF, Germany), Italy), Juan P. Madrid (CSIRO, Mischa Schirmer (Max Planck

arxiv:1810.08274 v1 · 2018-10-18 · 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{BOIDTUCD3MHQ4SGDBKEAPQVSAT}

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	2026-05-18T00:02:48.623708Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0b9039d043db0f0e48c30a8807c2b204ddb8bc523bfbc4d8097aaeb26279c8ae

Aliases

arxiv: 1810.08274 · arxiv_version: 1810.08274v1 · doi: 10.48550/arxiv.1810.08274 · pith_short_12: BOIDTUCD3MHQ · pith_short_16: BOIDTUCD3MHQ4SGD · pith_short_8: BOIDTUCD

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/BOIDTUCD3MHQ4SGDBKEAPQVSAT \
  | 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: 0b9039d043db0f0e48c30a8807c2b204ddb8bc523bfbc4d8097aaeb26279c8ae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "86de76e603483b4437ffcf78c728af47e4eb9208c42c6ea4e171503466a576ad",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-10-18T20:56:47Z",
    "title_canon_sha256": "7fa4024603c5068931b57006f1e86f73dd211a5076abc6cf060e8798d2671260"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.08274",
    "kind": "arxiv",
    "version": 1
  }
}