Pith Number

pith:HSAEIKR7

pith:2021:HSAEIKR7KGNONJIVIHRGPY72OC

not attested not anchored not stored refs pending

Tests for the existence of horizon through gravitational waves from a small binary in the vicinity of a massive object

Qing-Guo Huang, Rong-Zhen Guo, Yun Fang

arxiv:2108.04511 v2 · 2021-08-10 · astro-ph.CO · gr-qc · hep-ph · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HSAEIKR7KGNONJIVIHRGPY72OC}

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	2026-07-05T03:26:04.347686Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c80442a3f519ae6a51541e267e3fa70aade9e518780c5dc7680aa3eda1b3406

Aliases

arxiv: 2108.04511 · arxiv_version: 2108.04511v2 · doi: 10.48550/arxiv.2108.04511 · pith_short_12: HSAEIKR7KGNO · pith_short_16: HSAEIKR7KGNONJIV · pith_short_8: HSAEIKR7

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/HSAEIKR7KGNONJIVIHRGPY72OC \
  | 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: 3c80442a3f519ae6a51541e267e3fa70aade9e518780c5dc7680aa3eda1b3406

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5ff6aee2f85e3f0ce7161e52e96424a9e0b23b9f0b308d64ccd61d8c5b25f9b0",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph",
      "hep-th"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2021-08-10T08:26:34Z",
    "title_canon_sha256": "fa5d00a3877e08a040b15e876d5769dae98b1f81cc066a05c5b5aeaafcb21298"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.04511",
    "kind": "arxiv",
    "version": 2
  }
}