Pith Number

pith:EPFCC3VG

pith:2013:EPFCC3VGIZAVVNK2M2PF43VQUI

not attested not anchored not stored refs pending

Measuring the Kerr spin parameter of a non-Kerr compact object with the continuum-fitting and the iron line methods

Cosimo Bambi

arxiv:1305.5409 v2 · 2013-05-23 · 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{EPFCC3VGIZAVVNK2M2PF43VQUI}

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	2026-05-18T03:14:38.977536Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23ca216ea646415ab55a669e5e6eb0a235e972087cab830358f8ac5893c8d3f5

Aliases

arxiv: 1305.5409 · arxiv_version: 1305.5409v2 · doi: 10.48550/arxiv.1305.5409 · pith_short_12: EPFCC3VGIZAV · pith_short_16: EPFCC3VGIZAVVNK2 · pith_short_8: EPFCC3VG

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/EPFCC3VGIZAVVNK2M2PF43VQUI \
  | 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: 23ca216ea646415ab55a669e5e6eb0a235e972087cab830358f8ac5893c8d3f5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f98c8a6325e04c3ec652e57e8783388504a644ad3eb280c4ee3421ae182176d",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2013-05-23T13:19:35Z",
    "title_canon_sha256": "111e6a36ba6e96e20bc531567080211dfa931c4e47d45044c61d57baaea2842d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.5409",
    "kind": "arxiv",
    "version": 2
  }
}