Pith Number

pith:RGLTCR5V

pith:2012:RGLTCR5V46UYQXV24MGG4XPQHZ

not attested not anchored not stored refs pending

Testing General Relativity in the Strong-Field Regime with Observations of Black Holes in the Electromagnetic Spectrum

Arizona), Perimeter, Tim Johannsen (Waterloo

arxiv:1209.3024 v1 · 2012-09-13 · 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{RGLTCR5V46UYQXV24MGG4XPQHZ}

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	2026-05-18T01:54:29.265622Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

89973147b5e7a9885ebae30c6e5df03e67ffa410512405f20f240e984f43f21f

Aliases

arxiv: 1209.3024 · arxiv_version: 1209.3024v1 · doi: 10.48550/arxiv.1209.3024 · pith_short_12: RGLTCR5V46UY · pith_short_16: RGLTCR5V46UYQXV2 · pith_short_8: RGLTCR5V

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/RGLTCR5V46UYQXV24MGG4XPQHZ \
  | 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: 89973147b5e7a9885ebae30c6e5df03e67ffa410512405f20f240e984f43f21f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa0f1fe36759c4bb0657d3ffc2e90ddc1c6a29fb549df2a13146a28047b52b47",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-09-13T20:00:58Z",
    "title_canon_sha256": "3ada55ed76c33b0d9747a0e8007cadb3c29933778ce9898ffa88f7b76f6d99fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.3024",
    "kind": "arxiv",
    "version": 1
  }
}