Pith Number

pith:4ET2ZNYP

pith:2012:4ET2ZNYPDLT6LXNSTBRHPXGUG2

not attested not anchored not stored refs pending

Dark Matter as an active gravitational agent in cloud complexes

Andr\'es Su\'arez-Madrigal, Javier Ballesteros-Paredes, Paola D'Alessio, Pedro Col\'in

arxiv:1201.4193 v2 · 2012-01-20 · astro-ph.SR · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4ET2ZNYPDLT6LXNSTBRHPXGUG2}

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	2026-05-18T01:58:46.457235Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e127acb70f1ae7e5ddb2986277dcd436b568049b75be4cdb371f62f8eef463c0

Aliases

arxiv: 1201.4193 · arxiv_version: 1201.4193v2 · doi: 10.48550/arxiv.1201.4193 · pith_short_12: 4ET2ZNYPDLT6 · pith_short_16: 4ET2ZNYPDLT6LXNS · pith_short_8: 4ET2ZNYP

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/4ET2ZNYPDLT6LXNSTBRHPXGUG2 \
  | 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: e127acb70f1ae7e5ddb2986277dcd436b568049b75be4cdb371f62f8eef463c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "181d50fdcb5f1491850c44406b700d0cc359375ce51c77aeb0b7e645a8628ec1",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-01-20T00:07:49Z",
    "title_canon_sha256": "510aed39da43ceac05bd14c39bf09ff6d570ebf23b00ab8e3b7a3988b81653c6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.4193",
    "kind": "arxiv",
    "version": 2
  }
}