Pith Number

pith:ICLE23FK

pith:2001:ICLE23FKCXJNE42YGTROSIBY4E

not attested not anchored not stored refs pending

X-ray Novae and the Evidence for Black Hole Event Horizons

Jeffrey E. McClintock, Michael R. Garcia, Ramesh Narayan

arxiv:astro-ph/0107387 v2 · 2001-07-19 · astro-ph · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ICLE23FKCXJNE42YGTROSIBY4E}

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	2026-05-18T00:37:32.641591Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

40964d6caa15d2d2735834e2e92038e1339f1173f502c4b26b621de3850e617a

Aliases

arxiv: astro-ph/0107387 · arxiv_version: astro-ph/0107387v2 · doi: 10.48550/arxiv.astro-ph/0107387 · pith_short_12: ICLE23FKCXJN · pith_short_16: ICLE23FKCXJNE42Y · pith_short_8: ICLE23FK

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/ICLE23FKCXJNE42YGTROSIBY4E \
  | 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: 40964d6caa15d2d2735834e2e92038e1339f1173f502c4b26b621de3850e617a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8864e1d5305d8756db1eb161aba9c0f14069e35f548e3b00e2f15c8b93cdbfba",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-07-19T19:31:38Z",
    "title_canon_sha256": "473d9d89d84a4058b503e5410bd16a825cd2397b96d9fd686f366bb4b1ab0440"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0107387",
    "kind": "arxiv",
    "version": 2
  }
}