Pith Number

pith:GME2BKFM

pith:2018:GME2BKFMPWTCG4WIB23EQR6BED

not attested not anchored not stored refs pending

What stellar orbit is needed to measure the spin of the Galactic center black hole from astrometric data?

Alejandra Jimenez-Rosales, Felix Widmann, Feng Gao, Frank Eisenhauer, Idel Waisberg, Jason Dexter, Maryam Habibi, Michi Baub\"ock, Oliver Pfuhl, Phillip M. Plewa, Reinhard Genzel, Sebastiano von Fellenberg, Stefan Gillessen, Thomas Ott

arxiv:1802.08198 v1 · 2018-02-22 · astro-ph.GA · 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{GME2BKFMPWTCG4WIB23EQR6BED}

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	2026-07-05T11:14:44.284992Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3309a0a8ac7da62372c80eb64847c120e1cd27139231fa073013b9be34774bdf

Aliases

arxiv: 1802.08198 · arxiv_version: 1802.08198v1 · doi: 10.48550/arxiv.1802.08198 · pith_short_12: GME2BKFMPWTC · pith_short_16: GME2BKFMPWTCG4WI · pith_short_8: GME2BKFM

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/GME2BKFMPWTCG4WIB23EQR6BED \
  | 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: 3309a0a8ac7da62372c80eb64847c120e1cd27139231fa073013b9be34774bdf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0ba4aa002d4e8808fe0e95d2f1ef69fc82cb97eed2a298b0de26db7d0e7dac06",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-02-22T17:44:24Z",
    "title_canon_sha256": "7badf068e8c01461788683a8325507ffbccb22a4a9091a32d8dbc4ced678ae0e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.08198",
    "kind": "arxiv",
    "version": 1
  }
}