Pith Number

pith:HPKKZUVU

pith:2012:HPKKZUVU5OCSYLB2NI3OHYYDBB

not attested not anchored not stored refs pending

Resolving the inner jet structure of 1924-292 with the EVENT HORIZON TELESCOPE

Daniel P. Marrone, Geoffrey C. Bower, James M. Moran, J. Anton Zensus, Jonathan Weintroub, Ken H. Young, Lucy M. Ziurys, Makoto Inoue, Mareki Honma, Melvyn Wright, Paul T. P. Ho, Per Friberg, Remo P. J. Tilanus, Richard Plambeck, Robert Freund, Rurik Primiani, Ru-Sen Lu, Sheperd S. Doeleman, Thomas P. Krichbaum, Tomoaki Oyama, Vincent L. Fish, Zhi-Qiang Shen

arxiv:1208.4402 v1 · 2012-08-21 · astro-ph.HE · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HPKKZUVU5OCSYLB2NI3OHYYDBB}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:54:59.996211Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3bd4acd2b4eb852c2c3a6a36e3e303085ca0f1d06092e9e9e8d14b0c3dade9bf

Aliases

arxiv: 1208.4402 · arxiv_version: 1208.4402v1 · doi: 10.48550/arxiv.1208.4402 · pith_short_12: HPKKZUVU5OCS · pith_short_16: HPKKZUVU5OCSYLB2 · pith_short_8: HPKKZUVU

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/HPKKZUVU5OCSYLB2NI3OHYYDBB \
  | 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: 3bd4acd2b4eb852c2c3a6a36e3e303085ca0f1d06092e9e9e8d14b0c3dade9bf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f755f2bf190c4c6903e750fda2a5971570098a3068c9bce8232c416be863b6c3",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-08-21T23:46:35Z",
    "title_canon_sha256": "f0e9703ec56ca1a02cc37395869e99202f5c3f3573a5a5b21861e8606f28faa7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.4402",
    "kind": "arxiv",
    "version": 1
  }
}