Pith Number

pith:EYD5GKFN

pith:2020:EYD5GKFNLQXFWQANRQRWFULH5T

not attested not anchored not stored refs pending

A Jet-Bases Emission Model of the EHT 2017 Image of M87*

Kazunori Akiyama, Kenji Toma, Kotaro Moriyama, Masanori Nakamura, Motoki Kino, Tomohisa Kawashima

arxiv:2009.08641 v2 · 2020-09-18 · 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{EYD5GKFNLQXFWQANRQRWFULH5T}

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	2026-07-05T02:25:23.870032Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2607d328ad5c2e5b400d8c2362d167ecdbc528b24448a774e034f1fdef6b13a8

Aliases

arxiv: 2009.08641 · arxiv_version: 2009.08641v2 · doi: 10.48550/arxiv.2009.08641 · pith_short_12: EYD5GKFNLQXF · pith_short_16: EYD5GKFNLQXFWQAN · pith_short_8: EYD5GKFN

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/EYD5GKFNLQXFWQANRQRWFULH5T \
  | 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: 2607d328ad5c2e5b400d8c2362d167ecdbc528b24448a774e034f1fdef6b13a8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a99243db99c3c0d3ef9dd28a33bf644a945c2112a9d6638090031607e615c88",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2020-09-18T06:12:33Z",
    "title_canon_sha256": "922cf731e28f57953e784a6c89abe743e0f5820c258aa7cfe7f136c8f16440e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.08641",
    "kind": "arxiv",
    "version": 2
  }
}