Pith Number

pith:33ZEWTZI

pith:2018:33ZEWTZIBYCVCTMH2CUY72GNSH

not attested not anchored not stored refs pending

The limb-brightened jet of M87 down to 7 Schwarzschild radii scale

E. Ros, J. A. Zensus, J.-Y. Kim, M. Bremer, M. Lindqvist, P. de Vicente, R.-S. Lu, T.P. Krichbaum, U. Bach

arxiv:1805.02478 v1 · 2018-05-07 · astro-ph.GA · 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{33ZEWTZIBYCVCTMH2CUY72GNSH}

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	2026-05-18T00:06:02.311906Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

def24b4f280e05514d87d0a98fe8cd91d10ec1d030229a869eae7a411f467992

Aliases

arxiv: 1805.02478 · arxiv_version: 1805.02478v1 · doi: 10.48550/arxiv.1805.02478 · pith_short_12: 33ZEWTZIBYCV · pith_short_16: 33ZEWTZIBYCVCTMH · pith_short_8: 33ZEWTZI

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/33ZEWTZIBYCVCTMH2CUY72GNSH \
  | 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: def24b4f280e05514d87d0a98fe8cd91d10ec1d030229a869eae7a411f467992

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "03ed8fbeabb243fec5cb6375d3f1eb5ea55489771155fab3e5661d2dac8c0375",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-05-07T12:44:05Z",
    "title_canon_sha256": "5c957211325d5f4c4792a586e1af9dec9eb9380ae39d6b1a0f5ed1d9b64d54d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.02478",
    "kind": "arxiv",
    "version": 1
  }
}