Pith Number

pith:UEWPLHIC

pith:2013:UEWPLHICIWO3BAZ2KSBXLDTDAW

not attested not anchored not stored refs pending

Unveiling recurrent jets of the ULX Holmberg II X-1: evidence for a massive stellar-mass black hole?

C. Lang, D. Cseh, E. Koerding, F. Grise, H. Falcke, J. C. A. Miller-Jones, P. G. Jonker, P. Kaaret, S. Corbel, S. Farrell, S. Frey, Y. J. Yang, Z. Paragi

arxiv:1311.4867 v1 · 2013-11-19 · astro-ph.HE · astro-ph.CO

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

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	2026-05-18T01:46:22.881466Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a12cf59d02459db0833a5483758e6305a97759b0fbcb1e5e27a41b0e0a5f7555

Aliases

arxiv: 1311.4867 · arxiv_version: 1311.4867v1 · doi: 10.48550/arxiv.1311.4867 · pith_short_12: UEWPLHICIWO3 · pith_short_16: UEWPLHICIWO3BAZ2 · pith_short_8: UEWPLHIC

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/UEWPLHICIWO3BAZ2KSBXLDTDAW \
  | 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: a12cf59d02459db0833a5483758e6305a97759b0fbcb1e5e27a41b0e0a5f7555

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "93a5dbc1783352de562255230e840b7c037cf9e9af4d352b1dc2236ca0174026",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-11-19T20:34:07Z",
    "title_canon_sha256": "49c9722abb09be67e26f03cf61ee4e333dd3010483ac982b2be9cdefe5c96828"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.4867",
    "kind": "arxiv",
    "version": 1
  }
}