Pith Number

pith:WU4ENVU6

pith:2018:WU4ENVU6VJIMJ4SIGQNPZMPKTI

not attested not anchored not stored refs pending

On the charge of the Galactic centre black hole

Andreas Eckart, Arman Tursunov, Michal Zaja\v{c}ek, Silke Britzen

arxiv:1808.07327 v1 · 2018-08-22 · astro-ph.GA · astro-ph.HE · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WU4ENVU6VJIMJ4SIGQNPZMPKTI}

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

2 papers in Pith

General Boosted Black Holes: A First Approximation

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

Receipt and verification

First computed	2026-05-18T00:07:27.208114Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b53846d69eaa50c4f248341afcb1ea9a1bbc87a7f01139dde1a8ec395b16cbe9

Aliases

arxiv: 1808.07327 · arxiv_version: 1808.07327v1 · doi: 10.48550/arxiv.1808.07327 · pith_short_12: WU4ENVU6VJIM · pith_short_16: WU4ENVU6VJIMJ4SI · pith_short_8: WU4ENVU6

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/WU4ENVU6VJIMJ4SIGQNPZMPKTI \
  | 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: b53846d69eaa50c4f248341afcb1ea9a1bbc87a7f01139dde1a8ec395b16cbe9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aed2721e7db5470c00ea7ff271048e5c7b49ff5c2d40a2a8ca58e09f6ec420b6",
    "cross_cats_sorted": [
      "astro-ph.HE",
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-08-22T12:09:22Z",
    "title_canon_sha256": "13feed8e3c1bf1473ee010ddfabfe2ce0eea416faef595cec955536028790cb4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.07327",
    "kind": "arxiv",
    "version": 1
  }
}