Pith Number

pith:WAGPPLGO

pith:2021:WAGPPLGOUNOLQZFKJSIH2BAKI5

not attested not anchored not stored refs pending

First M87 Event Horizon Telescope Results. VIII. Magnetic Field Structure near The Event Horizon

The Event Horizon Telescope Collaboration

arxiv:2105.01173 v2 · 2021-05-03 · astro-ph.HE · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WAGPPLGOUNOLQZFKJSIH2BAKI5}

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

12 papers in Pith

Probing near-zone magnetic fields with extreme mass-ratio inspirals

A Jet from a Nearly Dormant Black Hole

Chaotic motion of particles around a Schwarzschild black hole in a swirling electromagnetic background

Equatorial Circular Motion of Charged Test Particles in a Weakly Magnetized Taub--NUT Background

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

Receipt and verification

First computed	2026-07-05T02:37:46.781082Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b00cf7accea35cb864aa4c907d040a475221fb2e95ff6e9772e865f6a8814c73

Aliases

arxiv: 2105.01173 · arxiv_version: 2105.01173v2 · doi: 10.48550/arxiv.2105.01173 · pith_short_12: WAGPPLGOUNOL · pith_short_16: WAGPPLGOUNOLQZFK · pith_short_8: WAGPPLGO

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/WAGPPLGOUNOLQZFKJSIH2BAKI5 \
  | 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: b00cf7accea35cb864aa4c907d040a475221fb2e95ff6e9772e865f6a8814c73

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b553bfea0cbd12108e1f9df5a85e6b3bdde94fadf32ef449fef456c492df8cf",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-05-03T21:22:13Z",
    "title_canon_sha256": "c77fc4262c08bf2a78858d46596df6801ef5769d4a04675413cfc8bd59e75280"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.01173",
    "kind": "arxiv",
    "version": 2
  }
}