Pith Number

pith:L4C7YHUA

pith:2021:L4C7YHUAHKW6EJJSRCM5XUMAAF

not attested not anchored not stored refs pending

Geometry near the inner horizon of a rotating, accreting black hole

Andrew J. S. Hamilton, Tyler McMaken

arxiv:2102.10402 v1 · 2021-02-20 · 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{L4C7YHUAHKW6EJJSRCM5XUMAAF}

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.

Cited by

1 paper in Pith

Taming the Aretakis instability: extremal black holes with multi-degenerate horizons

Receipt and verification

First computed	2026-07-05T02:31:53.256739Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f05fc1e803aade225328899dbd18001797a07ca8c2c7555bd938f2335523e06

Aliases

arxiv: 2102.10402 · arxiv_version: 2102.10402v1 · doi: 10.48550/arxiv.2102.10402 · pith_short_12: L4C7YHUAHKW6 · pith_short_16: L4C7YHUAHKW6EJJS · pith_short_8: L4C7YHUA

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/L4C7YHUAHKW6EJJSRCM5XUMAAF \
  | 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: 5f05fc1e803aade225328899dbd18001797a07ca8c2c7555bd938f2335523e06

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d84697049b48231c5bddec3eedb3d65fe42f5601737f04ae5792219f670b0ea",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2021-02-20T17:53:31Z",
    "title_canon_sha256": "bf8b606bcd54d53f17f4d8dfa77dd75e4bf56fc3e7324c551871b9ff4a794080"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.10402",
    "kind": "arxiv",
    "version": 1
  }
}