Pith Number

pith:YBM2T4YI

pith:2013:YBM2T4YIUYZYGIDEVLWXQBIV3U

not attested not anchored not stored refs pending

Zooming towards the Event Horizon - mm-VLBI today and tomorrow

A. Bertarini, A.P. Marscher, A. Roy, D. Marrone, E. Angelakis, H. Rottmann, J.A. Hodgson, J.A. Zensus, J. Wagner, J. Weintroub, K. Young, L. Fuhrmann, L. Ziurys, M. Bremer, P. Strittmatter, R. Blundell, R. Freund, S. Doeleman, S.G. Jorstad, S. Sanchez, T. P. Krichbaum, V. Fish, V. Karamanavis, W. Alef

arxiv:1305.2811 v1 · 2013-05-13 · astro-ph.HE · astro-ph.CO · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YBM2T4YIUYZYGIDEVLWXQBIV3U}

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	2026-05-18T03:25:47.223056Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c059a9f308a633832064aaed780515dd24b13cb09dad2e444f60d2a8c34cca43

Aliases

arxiv: 1305.2811 · arxiv_version: 1305.2811v1 · doi: 10.48550/arxiv.1305.2811 · pith_short_12: YBM2T4YIUYZY · pith_short_16: YBM2T4YIUYZYGIDE · pith_short_8: YBM2T4YI

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/YBM2T4YIUYZYGIDEVLWXQBIV3U \
  | 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: c059a9f308a633832064aaed780515dd24b13cb09dad2e444f60d2a8c34cca43

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea1da38fbecee7481e89671e6df8adb27f07697c8916aa109b8a872f139754b0",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-05-13T15:34:19Z",
    "title_canon_sha256": "6cb5c7112fa69bed0021b51a1999589b9a932a263771412fa7b892cc48a9fbbf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.2811",
    "kind": "arxiv",
    "version": 1
  }
}