Pith Number

pith:UBHT3OSO

pith:2026:UBHT3OSOMMMHBGG3363PT2ADLX

not attested not anchored not stored refs pending

The XRISM measurements of the black-hole spin in Cyg X-1 are highly model-dependent

Andrzej A. Zdziarski, Barbara de Marco, Gulab Dewangan, Michal Szanecki, Swadesh Chand

arxiv:2605.24664 v1 · 2026-05-23 · 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{UBHT3OSOMMMHBGG3363PT2ADLX}

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	2026-05-26T01:03:52.002444Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a04f3dba4e63187098dbdfb6f9e8035dfbd693efb37b18bdbb93992ce91da889

Aliases

arxiv: 2605.24664 · arxiv_version: 2605.24664v1 · doi: 10.48550/arxiv.2605.24664 · pith_short_12: UBHT3OSOMMMH · pith_short_16: UBHT3OSOMMMHBGG3 · pith_short_8: UBHT3OSO

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/UBHT3OSOMMMHBGG3363PT2ADLX \
  | 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: a04f3dba4e63187098dbdfb6f9e8035dfbd693efb37b18bdbb93992ce91da889

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c62bb4f283ccec065dd62a2d9478d3ab8a3cbc34fc381ef50e802048dee60523",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2026-05-23T17:07:10Z",
    "title_canon_sha256": "6c7f4363287a494ae3b819f9b77c6ebafac5f6f9c14eecca04f87b8178b6617c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.24664",
    "kind": "arxiv",
    "version": 1
  }
}