Pith Number

pith:PNMPYJUE

pith:2022:PNMPYJUE2DX3U3VF2BYQKDZLMT

not attested not anchored not stored refs pending

Probing the Shadow Image of the Sagittarius A* with Event Horizon Telescope

Pankaj S. Joshi, Parth Bambhaniya, Saurabh

arxiv:2202.00588 v1 · 2022-01-29 · gr-qc · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PNMPYJUE2DX3U3VF2BYQKDZLMT}

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	2026-07-05T03:53:23.373692Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b58fc2684d0efba6ea5d071050f2b64f72512b8f998672d1e180b6a1b05b244

Aliases

arxiv: 2202.00588 · arxiv_version: 2202.00588v1 · doi: 10.48550/arxiv.2202.00588 · pith_short_12: PNMPYJUE2DX3 · pith_short_16: PNMPYJUE2DX3U3VF · pith_short_8: PNMPYJUE

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/PNMPYJUE2DX3U3VF2BYQKDZLMT \
  | 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: 7b58fc2684d0efba6ea5d071050f2b64f72512b8f998672d1e180b6a1b05b244

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0e06be227ec4b5b83f192b926efe02de71c1abc497cd232743055800c6dcc8b3",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2022-01-29T13:10:06Z",
    "title_canon_sha256": "eb1682c48c0ec5ededa1829a79c852af75b80d12c53c30a7e71f0051aa3a1b49"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2202.00588",
    "kind": "arxiv",
    "version": 1
  }
}