Pith Number

pith:I5EVV47Z

pith:2010:I5EVV47ZUGDSCTLH2SLUL4XVFQ

not attested not anchored not stored refs pending

Testing the No-Hair Theorem with Observations in the Electromagnetic Spectrum: I. Properties of a Quasi-Kerr Spacetime

Dimitrios Psaltis (Arizona), Tim Johannsen (Arizona)

arxiv:1003.3415 v2 · 2010-03-17 · 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{I5EVV47ZUGDSCTLH2SLUL4XVFQ}

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	2026-05-18T02:08:26.409620Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

47495af3f9a187214d67d49745f2f52c2ae0fc92fe6794566aa0cf1852059a7f

Aliases

arxiv: 1003.3415 · arxiv_version: 1003.3415v2 · doi: 10.48550/arxiv.1003.3415 · pith_short_12: I5EVV47ZUGDS · pith_short_16: I5EVV47ZUGDSCTLH · pith_short_8: I5EVV47Z

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/I5EVV47ZUGDSCTLH2SLUL4XVFQ \
  | 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: 47495af3f9a187214d67d49745f2f52c2ae0fc92fe6794566aa0cf1852059a7f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d445b077f325a1940e8e3bf178b877b09a217eb97cf5e80885f0c6621df45317",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2010-03-17T17:28:47Z",
    "title_canon_sha256": "1bdaebfdafa8322e3ea95cc1e1ba646c031f05ed15515cce121bf917a4f5dc47"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1003.3415",
    "kind": "arxiv",
    "version": 2
  }
}