Pith Number

pith:TQD546ZZ

pith:2021:TQD546ZZCJFFLRJW2B74IZZEQQ

not attested not anchored not stored refs pending

Gravitational radiation close to a black hole horizon: Waveform regularization and the out-going echo

Manu Srivastava (IIT Bombay), Yanbei Chen (Caltech)

arxiv:2108.01329 v2 · 2021-08-03 · gr-qc · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TQD546ZZCJFFLRJW2B74IZZEQQ}

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	2026-07-05T03:43:43.315057Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9c07de7b39124a55c536d07fc4672484243cbcf5cb53473265d4c11452adf389

Aliases

arxiv: 2108.01329 · arxiv_version: 2108.01329v2 · doi: 10.48550/arxiv.2108.01329 · pith_short_12: TQD546ZZCJFF · pith_short_16: TQD546ZZCJFFLRJW · pith_short_8: TQD546ZZ

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/TQD546ZZCJFFLRJW2B74IZZEQQ \
  | 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: 9c07de7b39124a55c536d07fc4672484243cbcf5cb53473265d4c11452adf389

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "416e3fca9e2d1464b4bafda225d4d020dcc721d0fa579b55bdc5bd928d7de456",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2021-08-03T07:10:17Z",
    "title_canon_sha256": "21ffa4a73d0bd7f2c0d4e2c43bc00dca3525672db4ba86a8135bce9763f4e31f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.01329",
    "kind": "arxiv",
    "version": 2
  }
}