Pith Number

pith:KQAUTN7S

pith:2013:KQAUTN7SRZUHLSJCZWIZVUCGPO

not attested not anchored not stored refs pending

Helical magnetic fields in the M87 jet at arc-second scales

J. C. Algaba, K. Asada, M. Nakamura

arxiv:1308.5429 v2 · 2013-08-25 · 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{KQAUTN7SRZUHLSJCZWIZVUCGPO}

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	2026-05-18T01:18:04.837415Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

540149b7f28e6875c922cd919ad0467b82f86fe466cdd47e716d758ff855425a

Aliases

arxiv: 1308.5429 · arxiv_version: 1308.5429v2 · doi: 10.48550/arxiv.1308.5429 · pith_short_12: KQAUTN7SRZUH · pith_short_16: KQAUTN7SRZUHLSJC · pith_short_8: KQAUTN7S

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/KQAUTN7SRZUHLSJCZWIZVUCGPO \
  | 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: 540149b7f28e6875c922cd919ad0467b82f86fe466cdd47e716d758ff855425a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b3b4b8c2cbec823f010656f51ccde2352a624ddb83c377ffde2f2baca782c8a8",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-08-25T17:32:14Z",
    "title_canon_sha256": "f9a90818dc81d6aa382656c584ce46f9f9dc69888dd5f756c2aeeac2a0b8ccd5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.5429",
    "kind": "arxiv",
    "version": 2
  }
}