Pith Number

pith:5RJSQ2HS

pith:2013:5RJSQ2HSNWNJ3UTUIQF6B52E6A

not attested not anchored not stored refs pending

Is flat rotation curve a sign of cosmic expansion?

F. Darabi

arxiv:1301.2512 v4 · 2013-01-11 · astro-ph.CO · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5RJSQ2HSNWNJ3UTUIQF6B52E6A}

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	2026-05-18T01:52:13.378349Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec532868f26d9a9dd274440be0f744f033c5054ce94813cfad95f389afb235eb

Aliases

arxiv: 1301.2512 · arxiv_version: 1301.2512v4 · doi: 10.48550/arxiv.1301.2512 · pith_short_12: 5RJSQ2HSNWNJ · pith_short_16: 5RJSQ2HSNWNJ3UTU · pith_short_8: 5RJSQ2HS

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/5RJSQ2HSNWNJ3UTUIQF6B52E6A \
  | 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: ec532868f26d9a9dd274440be0f744f033c5054ce94813cfad95f389afb235eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5482c08df695ce957e75d382f28bd14abde9f07b780503c35091f04fcabe76ce",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-01-11T14:54:52Z",
    "title_canon_sha256": "c1e5cf52edc54cefe895dc1ca1ceccc3873a64add38155f46120d11f99c79878"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.2512",
    "kind": "arxiv",
    "version": 4
  }
}