Pith Number

pith:JY4FCZM4

pith:2013:JY4FCZM4ZNB2M33IUMLSB3RPMH

not attested not anchored not stored refs pending

Radio observations of extreme ULXs: revealing the most powerful ULX radio nebula ever or the jet of an intermediate-mass black hole?

A.D.Sutton, A.P.Lobanov, M.Mezcua, T.P.Roberts

arxiv:1309.5721 v2 · 2013-09-23 · astro-ph.HE · 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{JY4FCZM4ZNB2M33IUMLSB3RPMH}

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	2026-05-18T03:11:12.405075Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4e3851659ccb43a66f68a31720ee2f61ce90e854f33297d50905f36ebea9faf6

Aliases

arxiv: 1309.5721 · arxiv_version: 1309.5721v2 · doi: 10.48550/arxiv.1309.5721 · pith_short_12: JY4FCZM4ZNB2 · pith_short_16: JY4FCZM4ZNB2M33I · pith_short_8: JY4FCZM4

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/JY4FCZM4ZNB2M33IUMLSB3RPMH \
  | 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: 4e3851659ccb43a66f68a31720ee2f61ce90e854f33297d50905f36ebea9faf6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "79e5feb8745c6a93a5d6d4d23ae299a3698f8df0ce3f45de6b475594c8fbf5dc",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-09-23T07:59:01Z",
    "title_canon_sha256": "26867c2822f8b41ce4c4b725c22cec318bde30b200e670ef0882a5cf8dbe7f98"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.5721",
    "kind": "arxiv",
    "version": 2
  }
}