Pith Number

pith:EF5FKKS7

pith:2012:EF5FKKS7RKEKZMUHWATVS6A2J2

not attested not anchored not stored refs pending

Testing the space-time geometry around black hole candidates with the analysis of the broad K$\alpha$ iron line

Cosimo Bambi

arxiv:1211.2513 v2 · 2012-11-12 · 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{EF5FKKS7RKEKZMUHWATVS6A2J2}

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	2026-05-18T03:35:27.813252Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

217a552a5f8a88acb287b02759781a4ea194ce23152a0076d8e51b38a91f322d

Aliases

arxiv: 1211.2513 · arxiv_version: 1211.2513v2 · doi: 10.48550/arxiv.1211.2513 · pith_short_12: EF5FKKS7RKEK · pith_short_16: EF5FKKS7RKEKZMUH · pith_short_8: EF5FKKS7

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/EF5FKKS7RKEKZMUHWATVS6A2J2 \
  | 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: 217a552a5f8a88acb287b02759781a4ea194ce23152a0076d8e51b38a91f322d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a44c2669ecc9a04f8baa6bb442abcf03afb9a3effe77351f0848e31dc6cea54",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2012-11-12T05:32:53Z",
    "title_canon_sha256": "6e7954c65d27811f9564fba3715f575e5688bc38a1ba06330c05f8003d0330ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.2513",
    "kind": "arxiv",
    "version": 2
  }
}