Pith Number

pith:AOJLT4FR

pith:2009:AOJLT4FRI54VPK4QMO4QKVHLFU

not attested not anchored not stored refs pending

Deep 1.4 GHZ Follow Up of the Steep Spectrum Radio Halo in Abell 521

D. Dallacasa, G. Brunetti, G. Macario, G.Setti, N.E. Kassim, R. Cassano, S. Giacintucci, T. Venturi, W. Lane

arxiv:0905.0588 v1 · 2009-05-05 · astro-ph.CO · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AOJLT4FRI54VPK4QMO4QKVHLFU}

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	2026-05-18T02:13:47.538618Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0392b9f0b1477957ab9063b90554eb2d0b1c4cba8605cb4bd02a547924b69875

Aliases

arxiv: 0905.0588 · arxiv_version: 0905.0588v1 · doi: 10.48550/arxiv.0905.0588 · pith_short_12: AOJLT4FRI54V · pith_short_16: AOJLT4FRI54VPK4Q · pith_short_8: AOJLT4FR

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/AOJLT4FRI54VPK4QMO4QKVHLFU \
  | 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: 0392b9f0b1477957ab9063b90554eb2d0b1c4cba8605cb4bd02a547924b69875

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e176aa53f60b466c3b439ed4017a87e2726fc45b263a9f81a9dada2f85d7772a",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-05-05T12:16:14Z",
    "title_canon_sha256": "358744ceead2e9111ce5eed41f1bdf7ebed10f6a3eb4280559b17a748fb807a8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.0588",
    "kind": "arxiv",
    "version": 1
  }
}