Pith Number

pith:6WIAGVY5

pith:2014:6WIAGVY53Y2YLLNXWHZ3QJ2GHK

not attested not anchored not stored refs pending

The Intrinsic Two-Dimensional Size of Sagittarius A*

A. Goldwurm, A.M. Ghez, Andreas Brunthaler, Casey Law, Dipankar Maitra, Geoffrey C. Bower, Gunther Witzel, Heino Falcke, Leo Meyer, M. Clavel, M.R. Morris, Sera Markoff

arxiv:1405.1456 v1 · 2014-05-06 · 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{6WIAGVY53Y2YLLNXWHZ3QJ2GHK}

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	2026-05-18T01:43:16.944173Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f59003571dde3585adb7b1f3b827463aa5554b71caaec6f8eca6cfb8f086b225

Aliases

arxiv: 1405.1456 · arxiv_version: 1405.1456v1 · doi: 10.48550/arxiv.1405.1456 · pith_short_12: 6WIAGVY53Y2Y · pith_short_16: 6WIAGVY53Y2YLLNX · pith_short_8: 6WIAGVY5

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/6WIAGVY53Y2YLLNXWHZ3QJ2GHK \
  | 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: f59003571dde3585adb7b1f3b827463aa5554b71caaec6f8eca6cfb8f086b225

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "64b1ab56de7c2dc354c56893bcdab222b94edf164648db71cad96385c4377e01",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2014-05-06T21:15:56Z",
    "title_canon_sha256": "58490c97a369f2b265a99d728c6efbabc7d612fb023afdb4aa0a74fb2985fac1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.1456",
    "kind": "arxiv",
    "version": 1
  }
}