Pith Number

pith:IGP2CLZN

pith:2022:IGP2CLZNCGNH3PERDYRLEFF6IS

not attested not anchored not stored refs pending

Measuring Photon Rings with the ngEHT

Daniel C. M. Palumbo, Dominic O. Chang, Dominic W. Pesce, Michael D. Johnson, Paul Tiede, Peter Galison

arxiv:2210.13498 v1 · 2022-10-24 · 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{IGP2CLZNCGNH3PERDYRLEFF6IS}

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

3 papers in Pith

$\tt BlackHawk$ $\tt v3.0$: Hawking Radiation from Regular Black Holes

Bright ring features and polarization structures in Kerr-Sen black hole images illuminated by radiatively inefficient accretion flows

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

Receipt and verification

First computed	2026-07-05T05:10:19.067652Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

419fa12f2d119a7dbc911e22b214be44931463db73578e62c31493544dd6f52f

Aliases

arxiv: 2210.13498 · arxiv_version: 2210.13498v1 · doi: 10.48550/arxiv.2210.13498 · pith_short_12: IGP2CLZNCGNH · pith_short_16: IGP2CLZNCGNH3PER · pith_short_8: IGP2CLZN

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/IGP2CLZNCGNH3PERDYRLEFF6IS \
  | 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: 419fa12f2d119a7dbc911e22b214be44931463db73578e62c31493544dd6f52f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e653859bebbdd1278ca13fcf997d2474dd4764fb9e41e4dda29c0ed817c8e1b",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2022-10-24T18:00:09Z",
    "title_canon_sha256": "142902b79911b319b31a2c86e131125f1f3ae8041496126d86f2131766fc6caa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2210.13498",
    "kind": "arxiv",
    "version": 1
  }
}