Pith Number

pith:OOYQL2JK

pith:2026:OOYQL2JKHKIANE6KBL4F4BEQKH

not attested not anchored not stored refs pending

Black-Hole Spin Measurements from X-ray Reflection Spectroscopy: Quality Criteria and Community Recommendations

James F. Steiner, Javier A. Garcia, Laura W. Brenneman, Riley Connors

arxiv:2607.14368 v1 · 2026-07-15 · 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{OOYQL2JKHKIANE6KBL4F4BEQKH}

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	2026-07-17T00:21:08.207486Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73b105e92a3a900693ca0af85e049051d9a2514aaa927d783c58283f1cf7e45d

Aliases

arxiv: 2607.14368 · arxiv_version: 2607.14368v1 · doi: 10.48550/arxiv.2607.14368 · pith_short_12: OOYQL2JKHKIA · pith_short_16: OOYQL2JKHKIANE6K · pith_short_8: OOYQL2JK

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/OOYQL2JKHKIANE6KBL4F4BEQKH \
  | 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: 73b105e92a3a900693ca0af85e049051d9a2514aaa927d783c58283f1cf7e45d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a7ffb595631559d74ed1c4d81530a5ffab0319ee2e43dc1d2571e5fbc2da9093",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2026-07-15T21:16:51Z",
    "title_canon_sha256": "81141ded14f6153e4df573bc2ad6f26caae595461652d11ed1c48d41fa63b893"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.14368",
    "kind": "arxiv",
    "version": 1
  }
}