Pith Number

pith:VKP74OWU

pith:2021:VKP74OWUXUEK6ZXZUGJMWNMEUZ

not attested not anchored not stored refs pending

New Views of Black Holes from Computational Imaging

Andrew Chael, Dominic W. Pesce, Kazunori Akiyama

arxiv:2105.07004 v1 · 2021-05-14 · 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{VKP74OWUXUEK6ZXZUGJMWNMEUZ}

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	2026-07-05T02:40:36.023465Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aa9ffe3ad4bd08af66f9a192cb3584a66f519d1b4109565421c38136f3d4e1c3

Aliases

arxiv: 2105.07004 · arxiv_version: 2105.07004v1 · doi: 10.48550/arxiv.2105.07004 · pith_short_12: VKP74OWUXUEK · pith_short_16: VKP74OWUXUEK6ZXZ · pith_short_8: VKP74OWU

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/VKP74OWUXUEK6ZXZUGJMWNMEUZ \
  | 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: aa9ffe3ad4bd08af66f9a192cb3584a66f519d1b4109565421c38136f3d4e1c3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e0ccc9141705b1d344c061389f0ca6dd8c01d8799c0ad976a5fa9ab57e9c88a",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2021-05-14T18:00:01Z",
    "title_canon_sha256": "59382a482ffe4d6b8f41035878a2b2405d1a7554c14debc23734dca99f4f350e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.07004",
    "kind": "arxiv",
    "version": 1
  }
}