Pith Number

pith:YOK4EEWQ

pith:2019:YOK4EEWQX5ZWT3GLRV7YH7BJV6

not attested not anchored not stored refs pending

First M87 Event Horizon Telescope Results. II. Array and Instrumentation

The Event Horizon Telescope Collaboration

arxiv:1906.11239 v1 · 2019-06-26 · astro-ph.IM · 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{YOK4EEWQX5ZWT3GLRV7YH7BJV6}

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

8 papers in Pith

Dimming of Photon Ring due to Photon-Axion Conversion around Kerr Black Holes

The Early Career Workshop of GR-Amaldi 2025

Roche limit and stellar disruption in the Simpson--Visser spacetime

Rotating Black Holes with Primary Scalar Hair: Shadow Signatures in Beyond Horndeski Gravity

Observational Signatures of Rotating Ay\'{o}n-Beato-Garc\'{i}a Black Holes: Shadows, Accretion Disks and Images

Receipt and verification

First computed	2026-05-17T23:41:24.302225Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c395c212d0bf7369eccb8d7f83fc29afaf664b4693873de3411c19c1831036d2

Aliases

arxiv: 1906.11239 · arxiv_version: 1906.11239v1 · doi: 10.48550/arxiv.1906.11239 · pith_short_12: YOK4EEWQX5ZW · pith_short_16: YOK4EEWQX5ZWT3GL · pith_short_8: YOK4EEWQ

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/YOK4EEWQX5ZWT3GLRV7YH7BJV6 \
  | 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: c395c212d0bf7369eccb8d7f83fc29afaf664b4693873de3411c19c1831036d2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d3b9c5b75a5a28c26c0a510d54cc908a56e4a88a9aad9d88e54b870577c6dc88",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.HE",
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-06-26T18:06:47Z",
    "title_canon_sha256": "3eea02e88e7084f27add07856e8165d46fe46ed54f138afba0f8909d3bf8b70f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.11239",
    "kind": "arxiv",
    "version": 1
  }
}