Pith Number

pith:2XDGJE7Q

pith:2017:2XDGJE7Q62M536JYGK63JPVXJI

not attested not anchored not stored refs pending

Redshift determination of the BL Lac object 3C66A by the detection of its host galaxy cluster at $z=0.340$

2), (2) Facultad de Ciencias Astron\'omicas y Geof\'isicas, (3) Osservatorio Astronomico di Bologna (INAF), (4) Universidad Nacional de Colombia (UNal)), Alberto Buzzoni (3), Argentina, Ileana Andruchow (1, Jos\'e G. Portilla (4) ((1) Instituto de Astrof\'isica de La Plata (CCT La Plata - CONICET - UNLP), Juanita Torres-Zafra (1, La Plata, Sergio A. Cellone (1, Universidad Nacional de La Plata

arxiv:1710.04309 v1 · 2017-10-11 · 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{2XDGJE7Q62M536JYGK63JPVXJI}

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	2026-05-18T00:27:18.722476Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d5c66493f0f699ddf93832bdb4beb74a2ea351b98a3cca3dc262161e327980e8

Aliases

arxiv: 1710.04309 · arxiv_version: 1710.04309v1 · doi: 10.48550/arxiv.1710.04309 · pith_short_12: 2XDGJE7Q62M5 · pith_short_16: 2XDGJE7Q62M536JY · pith_short_8: 2XDGJE7Q

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/2XDGJE7Q62M536JYGK63JPVXJI \
  | 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: d5c66493f0f699ddf93832bdb4beb74a2ea351b98a3cca3dc262161e327980e8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b396e6f0481fa99e1846531642f85bd6db8e228937555bd5c378211b22d6d1e5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-10-11T21:31:33Z",
    "title_canon_sha256": "5291dbff643cc572919f39450ec3e68fbe33aff510f5ec358c248cea17f0cae8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.04309",
    "kind": "arxiv",
    "version": 1
  }
}