Pith Number

pith:YWUE2PM3

pith:2009:YWUE2PM3RNR4AZMOPR6IR2C7F7

not attested not anchored not stored refs pending

A double radio halo in the close pair of galaxy clusters Abell 399 and Abell 401

F. Govoni, G. Giovannini, L. Feretti, M. Murgia

arxiv:0911.3594 v1 · 2009-11-18 · 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{YWUE2PM3RNR4AZMOPR6IR2C7F7}

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	2026-05-18T02:10:46.262441Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c5a84d3d9b8b63c0658e7c7c88e85f2fe68414d5b1f7772b4c3d13b37598bfff

Aliases

arxiv: 0911.3594 · arxiv_version: 0911.3594v1 · doi: 10.48550/arxiv.0911.3594 · pith_short_12: YWUE2PM3RNR4 · pith_short_16: YWUE2PM3RNR4AZMO · pith_short_8: YWUE2PM3

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/YWUE2PM3RNR4AZMOPR6IR2C7F7 \
  | 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: c5a84d3d9b8b63c0658e7c7c88e85f2fe68414d5b1f7772b4c3d13b37598bfff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bd1598322e1c86617bf6f93b0e13e87613fdf93b0e44cf0077a8c35e2d436dc9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-11-18T16:27:15Z",
    "title_canon_sha256": "d8ef55a8ce3e780dc5f347f26ea36216702a90a4298a4c17e45bdde40ad4890b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.3594",
    "kind": "arxiv",
    "version": 1
  }
}