Pith Number

pith:HPDGBIVW

pith:2015:HPDGBIVWKDYR5OYR5CDAK6TD4I

not attested not anchored not stored refs pending

The hyperluminous X-ray source candidate in IC 4320: another HLX bites the dust

2), (2) Marshall Space Flight Center, (3) University of Alberta, (4) California Institute of Technology), Andrew D Sutton (1, Dominic J. Walton (4) ((1) University of Durham, Jeanette C. Gladstone (3), Timothy P. Roberts (1)

arxiv:1503.01711 v1 · 2015-03-05 · astro-ph.HE

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	2026-05-18T01:40:53.254954Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3bc660a2b650f11ebb11e886057a63e216a5dab7012d7cfafb4d91693ad6867b

Aliases

arxiv: 1503.01711 · arxiv_version: 1503.01711v1 · doi: 10.48550/arxiv.1503.01711 · pith_short_12: HPDGBIVWKDYR · pith_short_16: HPDGBIVWKDYR5OYR · pith_short_8: HPDGBIVW

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/HPDGBIVWKDYR5OYR5CDAK6TD4I \
  | 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: 3bc660a2b650f11ebb11e886057a63e216a5dab7012d7cfafb4d91693ad6867b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b150ebeb449cec4c87d8489518417d02f569771e7c648cbc534faa3963f3a9e5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-03-05T18:00:10Z",
    "title_canon_sha256": "83811c8420424731875f3056a8701eb8e88fd221a68b93194600c1bfbb4424da"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.01711",
    "kind": "arxiv",
    "version": 1
  }
}