Pith Number

pith:4SVQF44N

pith:2017:4SVQF44N37MSUIMKKQNOVSDE2V

not attested not anchored not stored refs pending

The observational evidence for horizons: from echoes to precision gravitational-wave physics

Paolo Pani, Vitor Cardoso

arxiv:1707.03021 v5 · 2017-07-10 · gr-qc · astro-ph.HE · hep-ph · physics.space-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4SVQF44N37MSUIMKKQNOVSDE2V}

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

3 papers in Pith

On the impossibility of observational confirmation of black holes

Bayesian Analysis of Massive Boson Star Models for Sagittarius A* Using Near-Infrared Astrometry Data

Testing solitonic boson star interpretations of Sagittarius A* with near-infrared flare astrometry

Receipt and verification

First computed	2026-05-17T23:48:46.106484Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4ab02f38ddfd92a218a541aeac864d541aea246299dd3b387ceb9cc0d59c679

Aliases

arxiv: 1707.03021 · arxiv_version: 1707.03021v5 · doi: 10.48550/arxiv.1707.03021 · pith_short_12: 4SVQF44N37MS · pith_short_16: 4SVQF44N37MSUIMK · pith_short_8: 4SVQF44N

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/4SVQF44N37MSUIMKKQNOVSDE2V \
  | 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: e4ab02f38ddfd92a218a541aeac864d541aea246299dd3b387ceb9cc0d59c679

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1899f78cbaae0fe1849eb1436cb14c169128719a1f7295f0f399a6ab4b80097f",
    "cross_cats_sorted": [
      "astro-ph.HE",
      "hep-ph",
      "physics.space-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2017-07-10T18:56:24Z",
    "title_canon_sha256": "c25b5e2b794c29283c8f739486dfd26f6fd11e021376361096280af54dbcfd9e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.03021",
    "kind": "arxiv",
    "version": 5
  }
}