Pith Number

pith:WPZ2MR3C

pith:2016:WPZ2MR3C5UOLFE3J3ZT7JXNH2A

not attested not anchored not stored refs pending

The X-ray spectral evolution of the ultraluminous X-ray source Holmberg IX X-1

2), (2) Srinakharinwirot University), C. Done (1) ((1) University of Durham, T. P. Roberts (1), W. Luangtip (1

arxiv:1605.08246 v1 · 2016-05-26 · 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{WPZ2MR3C5UOLFE3J3ZT7JXNH2A}

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	2026-05-18T01:12:45.121861Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b3f3a64762ed1cb29369de67f4dda7d01d7d6dd01798d62f45ea65b3b3b55e12

Aliases

arxiv: 1605.08246 · arxiv_version: 1605.08246v1 · doi: 10.48550/arxiv.1605.08246 · pith_short_12: WPZ2MR3C5UOL · pith_short_16: WPZ2MR3C5UOLFE3J · pith_short_8: WPZ2MR3C

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/WPZ2MR3C5UOLFE3J3ZT7JXNH2A \
  | 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: b3f3a64762ed1cb29369de67f4dda7d01d7d6dd01798d62f45ea65b3b3b55e12

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "70db452f02900fb6e2b9523c36978da9ede6eae587c30990b13f942cdd7a3627",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2016-05-26T12:05:03Z",
    "title_canon_sha256": "f20d4d9075deee5120952dcb173640a3592cb825b8078410722a269d9e4ad14f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.08246",
    "kind": "arxiv",
    "version": 1
  }
}