Pith Number

pith:J7DLM2TU

pith:2010:J7DLM2TUNJKOBPHXO5ST4BAQ2D

not attested not anchored not stored refs pending

Testing the No-Hair Theorem with Observations of Black Holes in the Electromagnetic Spectrum

Dimitrios Psaltis (Arizona), Tim Johannsen (Arizona)

arxiv:1008.3902 v2 · 2010-08-23 · 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{J7DLM2TUNJKOBPHXO5ST4BAQ2D}

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	2026-05-18T02:05:43.605300Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4fc6b66a746a54e0bcf777653e0410d0d87dbf08de1c953067854f5ad35b957c

Aliases

arxiv: 1008.3902 · arxiv_version: 1008.3902v2 · doi: 10.48550/arxiv.1008.3902 · pith_short_12: J7DLM2TUNJKO · pith_short_16: J7DLM2TUNJKOBPHX · pith_short_8: J7DLM2TU

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/J7DLM2TUNJKOBPHXO5ST4BAQ2D \
  | 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: 4fc6b66a746a54e0bcf777653e0410d0d87dbf08de1c953067854f5ad35b957c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "afdbacf36a3e5a0832e0287758ea43723bf47be4200885afd66b5e03507809ab",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2010-08-23T20:00:03Z",
    "title_canon_sha256": "07f2194a6c5fe17aa322338c917e76e884c5cfdf30f4f74cbf19363bb316c6d4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1008.3902",
    "kind": "arxiv",
    "version": 2
  }
}