Pith Number

pith:T6W4KCXM

pith:2014:T6W4KCXMNTE6HL2BSYFXNE5ZNZ

not attested not anchored not stored refs pending

Testing the Bardeen metric with the black hole candidate in Cygnus X-1

Cosimo Bambi

arxiv:1401.4640 v2 · 2014-01-19 · 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{T6W4KCXMNTE6HL2BSYFXNE5ZNZ}

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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.

Cited by

1 paper in Pith

Testing black hole metrics with binary black hole inspirals

Receipt and verification

First computed	2026-05-18T03:01:01.862209Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9fadc50aec6cc9e3af41960b7693b96e6e6dcdcdf09d665de98eeb6347cdf962

Aliases

arxiv: 1401.4640 · arxiv_version: 1401.4640v2 · doi: 10.48550/arxiv.1401.4640 · pith_short_12: T6W4KCXMNTE6 · pith_short_16: T6W4KCXMNTE6HL2B · pith_short_8: T6W4KCXM

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/T6W4KCXMNTE6HL2BSYFXNE5ZNZ \
  | 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: 9fadc50aec6cc9e3af41960b7693b96e6e6dcdcdf09d665de98eeb6347cdf962

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7fdbf07a2e42dae584e4cd91073bed97ee0768a809e73c4ae1c15909e80dcfdf",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2014-01-19T06:57:26Z",
    "title_canon_sha256": "7d5aa22c9fb25814d6e369b97d3556947643628912939a2aaf0334b0f0b2f23e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.4640",
    "kind": "arxiv",
    "version": 2
  }
}