Pith Number

pith:G4VQW7PT

pith:2020:G4VQW7PTJHEW57C2N3YNX3AYF2

not attested not anchored not stored refs pending

Spacetime Tomography Using The Event Horizon Telescope

Avery E. Broderick, Hung-Yi Pu, Jorge A. Preciado-L\'opez, Mansour Karami, Paul Tiede, Roman Gold

arxiv:2002.05735 v2 · 2020-02-13 · 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{G4VQW7PTJHEW57C2N3YNX3AYF2}

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

VAPOLA -- A multi-year, multi-band polarization survey of AGN and Sgr A* at mm wavelengths with ALMA I. Survey Overview and Science-Ready Archival Products

Receipt and verification

First computed	2026-07-05T00:55:10.145948Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

372b0b7df349c96efc5a6ef0dbec182e8bc57084dfae95ecfb13c02e2c86f38a

Aliases

arxiv: 2002.05735 · arxiv_version: 2002.05735v2 · doi: 10.48550/arxiv.2002.05735 · pith_short_12: G4VQW7PTJHEW · pith_short_16: G4VQW7PTJHEW57C2 · pith_short_8: G4VQW7PT

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/G4VQW7PTJHEW57C2N3YNX3AYF2 \
  | 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: 372b0b7df349c96efc5a6ef0dbec182e8bc57084dfae95ecfb13c02e2c86f38a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6b5dfc8405634a3b0fd6f8a73e0193d5bde03addb747f52916100f08c2dc8efb",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2020-02-13T19:00:04Z",
    "title_canon_sha256": "dbe94ec4d7f47e798677069541b2a619ba3b04f7fdcba159bada71e9a38fe43d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.05735",
    "kind": "arxiv",
    "version": 2
  }
}