Pith Number

pith:7P4HRDNG

pith:2021:7P4HRDNGTTFNX2JPIGQX3HVKMD

not attested not anchored not stored refs pending

MeerKAT-64 discovers wide-spread tidal debris in the nearby NGC 7232 galaxy group

Athanaseus Ramaila, Baerbel Silvia Koribalski, Benjamin Hugo, Brenda Namumba, Claude Carignan, Dane Kleiner, Daniel Csaba Csaba Molnar, Erwin W.J.G. de Blok, Filippo Maccagni, Francesca Loi, Gyula I. G. J\'ozsa, Julian Garrido, Karen Lee-Waddell, Kshitij Thorat, Lexy A. L. Andanti, Lourdes Verdes-Montenegro, Michael Gordon Jones, Michelle Cluver, Mpati Ramatsoku, Oleg Smirnov, Paolo Serra, Peter Kamphuis, Roger Ianjamasimanana, Sarah V. White, Simon Perkins, Sphesihle Makhathini, Susana Sanchez-Exposito

arxiv:2105.10428 v1 · 2021-05-21 · 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{7P4HRDNGTTFNX2JPIGQX3HVKMD}

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	2026-07-05T02:53:44.653492Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fbf8788da69ccadbe92f41a17d9eaa60e5bcb9da9ba2022bc1a2eee6e77b1568

Aliases

arxiv: 2105.10428 · arxiv_version: 2105.10428v1 · doi: 10.48550/arxiv.2105.10428 · pith_short_12: 7P4HRDNGTTFN · pith_short_16: 7P4HRDNGTTFNX2JP · pith_short_8: 7P4HRDNG

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/7P4HRDNGTTFNX2JPIGQX3HVKMD \
  | 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: fbf8788da69ccadbe92f41a17d9eaa60e5bcb9da9ba2022bc1a2eee6e77b1568

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "23ef2ea78ff88dee61792c8a030ad434bfb9a0d8be4c06073b1bc03767262061",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-05-21T15:54:09Z",
    "title_canon_sha256": "bc53bcbecc1d25b020791afe56a7d312de2780034c90f6778971a12ed8d7483f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.10428",
    "kind": "arxiv",
    "version": 1
  }
}