Pith Number

pith:TK7M2ZX6

pith:2018:TK7M2ZX6FINGD6EC45BUANVSZL

not attested not anchored not stored refs pending

Black Hole Echology: The Observer's Manual

Niayesh Afshordi, Qingwen Wang

arxiv:1803.02845 v2 · 2018-03-07 · gr-qc · astro-ph.HE · 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{TK7M2ZX6FINGD6EC45BUANVSZL}

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

Relaxation without ringdown for a compact object in modified gravity

Receipt and verification

First computed	2026-05-18T00:12:18.042074Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9abecd66fe2a1a61f882e7434036b2cac6cefec38af15af42e83ad9e41da898c

Aliases

arxiv: 1803.02845 · arxiv_version: 1803.02845v2 · doi: 10.48550/arxiv.1803.02845 · pith_short_12: TK7M2ZX6FING · pith_short_16: TK7M2ZX6FINGD6EC · pith_short_8: TK7M2ZX6

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/TK7M2ZX6FINGD6EC45BUANVSZL \
  | 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: 9abecd66fe2a1a61f882e7434036b2cac6cefec38af15af42e83ad9e41da898c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bbdda972362c343b48b93907a80b57bd3b1d70802401c4a253b75c96fee04e41",
    "cross_cats_sorted": [
      "astro-ph.HE",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-03-07T19:20:14Z",
    "title_canon_sha256": "57e574ca4807f7c7f4444f01d5f9fcb7bcf0bfa2b269345394a75a7efc58205f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.02845",
    "kind": "arxiv",
    "version": 2
  }
}