Pith Number

pith:E4TUFDMS

pith:2012:E4TUFDMSG3FMWCBHXDALEL4ZK4

not attested not anchored not stored refs pending

Galaxy Pairs in the Local Group

Alan W. McConnachie, Azadeh Fattahi, Christopher R. Barber, Else Starkenburg, Julio F. Navarro

arxiv:1211.3161 v2 · 2012-11-13 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{E4TUFDMSG3FMWCBHXDALEL4ZK4}

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	2026-05-18T01:53:15.911472Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2727428d9236cacb0827b8c0b22f99573b245a9cd3cca4ec43b7d07528cfe74e

Aliases

arxiv: 1211.3161 · arxiv_version: 1211.3161v2 · doi: 10.48550/arxiv.1211.3161 · pith_short_12: E4TUFDMSG3FM · pith_short_16: E4TUFDMSG3FMWCBH · pith_short_8: E4TUFDMS

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/E4TUFDMSG3FMWCBHXDALEL4ZK4 \
  | 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: 2727428d9236cacb0827b8c0b22f99573b245a9cd3cca4ec43b7d07528cfe74e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "39d64b3d03b48071cc1a806592b3b2c390d29d73078e3adee2e1ffcf5df5f9ae",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-11-13T23:30:12Z",
    "title_canon_sha256": "72261c3a68bd5a44110a523b8e0e8679a7a5a8ce155eb8efdd0f73c1062f8a40"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.3161",
    "kind": "arxiv",
    "version": 2
  }
}