Pith Number

pith:MUVWIGZI

pith:2010:MUVWIGZINJQBENZBUU5KBUNGV6

not attested not anchored not stored refs pending

When galaxies collide: understanding the broad absorption-line radio galaxy 4C +72.26

A.M. Swinbank, C. Simpson, D.J.B. Smith, M.J. Jarvis, S. Rawlings

arxiv:1001.2018 v1 · 2010-01-12 · 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{MUVWIGZINJQBENZBUU5KBUNGV6}

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	2026-05-18T02:09:55.280869Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

652b641b286a60123721a53aa0d1a6afba6e18c4a9c90c819a8187bdf31ce5d9

Aliases

arxiv: 1001.2018 · arxiv_version: 1001.2018v1 · doi: 10.48550/arxiv.1001.2018 · pith_short_12: MUVWIGZINJQB · pith_short_16: MUVWIGZINJQBENZB · pith_short_8: MUVWIGZI

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/MUVWIGZINJQBENZBUU5KBUNGV6 \
  | 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: 652b641b286a60123721a53aa0d1a6afba6e18c4a9c90c819a8187bdf31ce5d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8d9180451e55080f9094b254e8602372eb7d2fb735fee1891571cab6d4ae982",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-01-12T21:11:16Z",
    "title_canon_sha256": "4f2d892dc30fe148356956054d6078101c5859ae75822870b9f874f5be217c15"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1001.2018",
    "kind": "arxiv",
    "version": 1
  }
}