Pith Number

pith:FAAAPCT6

pith:2023:FAAAPCT67H6DAL25CNB47YN3JE

not attested not anchored not stored refs pending

Demonstrating Photon Ring Existence with Single-Baseline Polarimetry

Andrew A. Chael, Daniel C. M. Palumbo, George N. Wong, Michael D. Johnson

arxiv:2307.05293 v1 · 2023-07-11 · astro-ph.HE · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FAAAPCT67H6DAL25CNB47YN3JE}

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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

1 paper in Pith

Influence of Observer Inclination and Spacetime Structure on Photon Ring Observables

Receipt and verification

First computed	2026-07-05T06:39:04.251285Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2800078a7ef9fc302f5d1343cfe1bb49056a2dcf26ac9d0fb12ff4e812914f80

Aliases

arxiv: 2307.05293 · arxiv_version: 2307.05293v1 · doi: 10.48550/arxiv.2307.05293 · pith_short_12: FAAAPCT67H6D · pith_short_16: FAAAPCT67H6DAL25 · pith_short_8: FAAAPCT6

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/FAAAPCT67H6DAL25CNB47YN3JE \
  | 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: 2800078a7ef9fc302f5d1343cfe1bb49056a2dcf26ac9d0fb12ff4e812914f80

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f4ae305077346c4fcf4de0ecfa777dcdb556edae95ae8aa5ab71f32faa34529e",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2023-07-11T14:37:51Z",
    "title_canon_sha256": "729bf14753ab7074861a9b8d635c4b03746580e5af5e7e92e420329ddd29b953"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2307.05293",
    "kind": "arxiv",
    "version": 1
  }
}