Pith Number

pith:BJ2OH7K5

pith:2020:BJ2OH7K52SLNIO4RM2TK3424GS

not attested not anchored not stored refs pending

Discretization and Filtering Effects on Black Hole Images Obtained with the Event Horizon Telescope

Chi-kwan Chan, Dimitrios Psaltis, Feryal Ozel, Lia Medeiros, Tod R. Lauer

arxiv:2004.06210 v1 · 2020-04-13 · 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{BJ2OH7K52SLNIO4RM2TK3424GS}

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

1 paper in Pith

Prospects for Improving the Theoretical Uncertainty for Tests of General Relativity with the EHT

Receipt and verification

First computed	2026-07-05T00:54:50.023085Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0a74e3fd5dd496d43b9166a6adf35c34bb3ef776ecd740f195ed22f9a588a8a6

Aliases

arxiv: 2004.06210 · arxiv_version: 2004.06210v1 · doi: 10.48550/arxiv.2004.06210 · pith_short_12: BJ2OH7K52SLN · pith_short_16: BJ2OH7K52SLNIO4R · pith_short_8: BJ2OH7K5

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/BJ2OH7K52SLNIO4RM2TK3424GS \
  | 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: 0a74e3fd5dd496d43b9166a6adf35c34bb3ef776ecd740f195ed22f9a588a8a6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd2dfa58aecb9643e243c3ed48f0feef15459fb14a92952be4a2792167b067a3",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2020-04-13T21:22:15Z",
    "title_canon_sha256": "c4c1250c329a1ae5cc37831b9c6e54d47cdd68704a1dd4832a3d76763d06f3ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.06210",
    "kind": "arxiv",
    "version": 1
  }
}