Pith Number

pith:POEB5OS5

pith:2025:POEB5OS5WRJLZVHIRUYBHZWTK7

not attested not anchored not stored refs pending

Modeling Targets and Optimal Frequencies for Imaging the Shadows of Nearby Supermassive Black Holes

Dimitrios Psaltis, Feryal Ozel, J. Cole Faggert

arxiv:2506.15783 v1 · 2025-06-18 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{POEB5OS5WRJLZVHIRUYBHZWTK7}

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.

Receipt and verification

First computed	2026-07-05T11:23:51.997071Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b881eba5db452bcd4e88d3013e6d357c06d220f6fe869e88a3cfc0bcbd7b4f7

Aliases

arxiv: 2506.15783 · arxiv_version: 2506.15783v1 · doi: 10.48550/arxiv.2506.15783 · pith_short_12: POEB5OS5WRJL · pith_short_16: POEB5OS5WRJLZVHI · pith_short_8: POEB5OS5

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/POEB5OS5WRJLZVHIRUYBHZWTK7 \
  | 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: 7b881eba5db452bcd4e88d3013e6d357c06d220f6fe869e88a3cfc0bcbd7b4f7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5d6aac0d3c9da1d8b1d4208b6025f4cd52dbfb38373be8f49104d6cd25aa630b",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2025-06-18T18:00:10Z",
    "title_canon_sha256": "e7019701f3c32579ff3db4cfc5001685b2ab3651ac08b1a45324c6f08ec61776"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.15783",
    "kind": "arxiv",
    "version": 1
  }
}