Pith Number

pith:462R5G4L

pith:1998:462R5G4LFMFIHN4NVYAWSXK5KL

not attested not anchored not stored refs pending

Astrophysical Evidence for Black Hole Event Horizons

Eliot Quataert, Kristen Menou, Ramesh Narayan (Harvard-Smithsonian Center for Astrophysics)

arxiv:gr-qc/9803057 v1 · 1998-03-16 · 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{462R5G4LFMFIHN4NVYAWSXK5KL}

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	2026-07-04T14:26:11.063550Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e7b51e9b8b2b0a83b78dae01695d5d52cb46ca202dde1a0aeec3bd4c5f78e329

Aliases

arxiv: gr-qc/9803057 · arxiv_version: gr-qc/9803057v1 · doi: 10.48550/arxiv.gr-qc/9803057 · pith_short_12: 462R5G4LFMFI · pith_short_16: 462R5G4LFMFIHN4N · pith_short_8: 462R5G4L

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/462R5G4LFMFIHN4NVYAWSXK5KL \
  | 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: e7b51e9b8b2b0a83b78dae01695d5d52cb46ca202dde1a0aeec3bd4c5f78e329

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "01903cf969be048beb425a89e36dccbb5c2c899b3e25a1a8e474f7b85b848861",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1998-03-16T16:27:27Z",
    "title_canon_sha256": "f6134f69c8e5e34c3c8430d96acf5c9fcd704bb01b6005de820d52bc0d7b5868"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9803057",
    "kind": "arxiv",
    "version": 1
  }
}