Pith Number

pith:EW2EYIS7

pith:2019:EW2EYIS7XW5QDUAEJDCH6462KX

not attested not anchored not stored refs pending

Testing the rotational nature of the supermassive object M87* from the circularity and size of its first image

Cosimo Bambi, Katherine Freese, Luca Visinelli, Sunny Vagnozzi

arxiv:1904.12983 v2 · 2019-04-29 · gr-qc · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EW2EYIS7XW5QDUAEJDCH6462KX}

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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

10 papers in Pith

$\tt BlackHawk$ $\tt v3.0$: Hawking Radiation from Regular Black Holes

Regular black hole solutions and the quark chemical potential at the QCD phase transition

Rotating Black Holes with Primary Scalar Hair: Shadow Signatures in Beyond Horndeski Gravity

Photon Spheres and shadow of modified black-hole entropies

Receipt and verification

First computed	2026-07-05T00:42:52.102045Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25b44c225fbdbb01d00448c47f73da55fad2b2fb2e348fa1611ab9aefb06f66d

Aliases

arxiv: 1904.12983 · arxiv_version: 1904.12983v2 · doi: 10.48550/arxiv.1904.12983 · pith_short_12: EW2EYIS7XW5Q · pith_short_16: EW2EYIS7XW5QDUAE · pith_short_8: EW2EYIS7

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/EW2EYIS7XW5QDUAEJDCH6462KX \
  | 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: 25b44c225fbdbb01d00448c47f73da55fad2b2fb2e348fa1611ab9aefb06f66d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6db48cc0a5433389bf82f1df1599e3cbe67ef994f8091d9437030f7c8f30da7",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2019-04-29T23:04:12Z",
    "title_canon_sha256": "fe4f7504a1e57929a92d77c01405ad97e8e52020f295def1f6b4fe9ed7e1dbf3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.12983",
    "kind": "arxiv",
    "version": 2
  }
}