Pith Number

pith:6HAQCD7F

pith:2015:6HAQCD7FST5KF373S3MZD22JMZ

not attested not anchored not stored refs pending

Testing General Relativity with the Shadow Size of Sgr A*

Avery E. Broderick, Frank Eisenhauer, Michael D. Johnson, Ortwin Gerhard, Philipp M. Plewa, Reinhard Genzel, Sheperd S. Doeleman, Sotiris Chatzopoulos, Tim Johannsen, Vincent L. Fish

arxiv:1512.02640 v2 · 2015-12-08 · astro-ph.GA · astro-ph.HE · 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{6HAQCD7FST5KF373S3MZD22JMZ}

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.

Cited by

2 papers in Pith

Testing the nature of dark compact objects: a status report

Reshaping the inner shadow of a Kerr black hole by a torn accretion disk

Receipt and verification

First computed	2026-05-18T01:21:51.065190Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f1c1010fe594faa2effb96d991eb4966543f4a1b4d20403b869e280a5d74463f

Aliases

arxiv: 1512.02640 · arxiv_version: 1512.02640v2 · doi: 10.48550/arxiv.1512.02640 · pith_short_12: 6HAQCD7FST5K · pith_short_16: 6HAQCD7FST5KF373 · pith_short_8: 6HAQCD7F

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/6HAQCD7FST5KF373S3MZD22JMZ \
  | 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: f1c1010fe594faa2effb96d991eb4966543f4a1b4d20403b869e280a5d74463f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "86b8ed3b4e12f2fb33ef3fa7810e9d5713d69ed25b60a9ae9630307f7ad3b4ce",
    "cross_cats_sorted": [
      "astro-ph.HE",
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-12-08T21:00:04Z",
    "title_canon_sha256": "0b7f346a2546d0fcd0d318888d064950779cdaba5d9c1f39edb2972984a5da33"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.02640",
    "kind": "arxiv",
    "version": 2
  }
}