Pith Number

pith:MH5HJR72

pith:2013:MH5HJR726DOODV5D6GRJ6UVOV7

not attested not anchored not stored refs pending

Hubble constant and dark energy inferred from free-form determined time delay distances

Danuta Paraficz, Mauro Sereno (POLITO)

arxiv:1310.2251 v1 · 2013-10-08 · 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{MH5HJR726DOODV5D6GRJ6UVOV7}

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	2026-05-18T01:47:07.785541Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

61fa74c7faf0dce1d7a3f1a29f52aeafdf0a1b7845f3d4b799ff24ab8b777f4f

Aliases

arxiv: 1310.2251 · arxiv_version: 1310.2251v1 · doi: 10.48550/arxiv.1310.2251 · pith_short_12: MH5HJR726DOO · pith_short_16: MH5HJR726DOODV5D · pith_short_8: MH5HJR72

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/MH5HJR726DOODV5D6GRJ6UVOV7 \
  | 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: 61fa74c7faf0dce1d7a3f1a29f52aeafdf0a1b7845f3d4b799ff24ab8b777f4f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bf27ececc30e4eb93f48d8d30d22b8d5857c0f1c8773e84ee7917bce1514fd7d",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-10-08T20:00:08Z",
    "title_canon_sha256": "6e0a4fd9a8fa8be47f1f7bd0b6298c0deb4bc5f1e0aff7d9773ca3c9608f2da9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.2251",
    "kind": "arxiv",
    "version": 1
  }
}