Pith Number

pith:IQ2CA4OD

pith:2017:IQ2CA4OD2QBBB2NFKX72JPJK2U

not attested not anchored not stored refs pending

Caught in the rhythm II: Competitive alignments of satellites with their inner halo and central galaxy

Charlotte Welker, Chris Power, Christophe Pichon, Julien Devriendt, Sandrine Codis, Yohan Dubois

arxiv:1712.07818 v1 · 2017-12-21 · 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{IQ2CA4OD2QBBB2NFKX72JPJK2U}

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	2026-05-18T00:27:29.679745Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

44342071c3d40210e9a555ffa4bd2ad52971175a9eeffb4289dcdb8491bb6ed8

Aliases

arxiv: 1712.07818 · arxiv_version: 1712.07818v1 · doi: 10.48550/arxiv.1712.07818 · pith_short_12: IQ2CA4OD2QBB · pith_short_16: IQ2CA4OD2QBBB2NF · pith_short_8: IQ2CA4OD

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/IQ2CA4OD2QBBB2NFKX72JPJK2U \
  | 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: 44342071c3d40210e9a555ffa4bd2ad52971175a9eeffb4289dcdb8491bb6ed8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8251fbeb3dbf8251740a6c82baed78a09c25cb0b652ad82e46312049e61ef8d7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-12-21T07:54:02Z",
    "title_canon_sha256": "220ae9e160606d57c9f83808a607393ee411d8fe8e90633776e0d1be68aef35a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.07818",
    "kind": "arxiv",
    "version": 1
  }
}