Pith Number

pith:NUGYCWLZ

pith:2017:NUGYCWLZB3V6HTJN3MTGDSKKHQ

not attested not anchored not stored refs pending

Imaging the Schwarzschild-radius-scale Structure of M87 with the Event Horizon Telescope using Sparse Modeling

Andrew Chael, Avery Broderick, Fumie Tazaki, Jason Dexter, Katherine L. Bouman, Kazuki Kuramochi, Kazunori Akiyama, Mareki Honma, Masamichi Zaizen, Monika Mo\'scibrodzka, Sheperd S. Doeleman, Shiro Ikeda, Vincent L. Fish

arxiv:1702.07361 v1 · 2017-02-23 · astro-ph.IM · 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{NUGYCWLZB3V6HTJN3MTGDSKKHQ}

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	2026-05-18T00:47:45.702799Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d0d8159790eebe3cd2ddb2661c94a3c1e1a490016520199606423869a8a14be

Aliases

arxiv: 1702.07361 · arxiv_version: 1702.07361v1 · doi: 10.48550/arxiv.1702.07361 · pith_short_12: NUGYCWLZB3V6 · pith_short_16: NUGYCWLZB3V6HTJN · pith_short_8: NUGYCWLZ

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/NUGYCWLZB3V6HTJN3MTGDSKKHQ \
  | 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: 6d0d8159790eebe3cd2ddb2661c94a3c1e1a490016520199606423869a8a14be

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "680c893a01f9331b90e7c48203c8ad0d60c860e1d3777279b476cab7c23a7476",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2017-02-23T19:03:13Z",
    "title_canon_sha256": "c8fe52d27c7ea06a9ba043ae4907d894876ee49ea906e7698b59a9f48eaae11d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.07361",
    "kind": "arxiv",
    "version": 1
  }
}