Pith Number

pith:5OGEZSVA

pith:2010:5OGEZSVAUW5TH35LLVEPSDGB3M

not attested not anchored not stored refs pending

The Hubble constant inferred from 18 time-delay lenses

Danuta Paraficz, Jens Hjorth

arxiv:1002.2570 v1 · 2010-02-12 · 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{5OGEZSVAUW5TH35LLVEPSDGB3M}

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	2026-05-18T04:39:59.349786Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eb8c4ccaa0a5bb33efab5d48f90cc1db2574ed75a5c2fe796e64d3ca141eecc2

Aliases

arxiv: 1002.2570 · arxiv_version: 1002.2570v1 · doi: 10.48550/arxiv.1002.2570 · pith_short_12: 5OGEZSVAUW5T · pith_short_16: 5OGEZSVAUW5TH35L · pith_short_8: 5OGEZSVA

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/5OGEZSVAUW5TH35LLVEPSDGB3M \
  | 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: eb8c4ccaa0a5bb33efab5d48f90cc1db2574ed75a5c2fe796e64d3ca141eecc2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1e8920383d011e13f40b301885671c9d9fe1f58446213a2ad8c2e4ecfad725fb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-02-12T15:01:03Z",
    "title_canon_sha256": "0248a185039eb410441a9766cd4a387ff471a4b8743a92aab129f22980d3a26e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.2570",
    "kind": "arxiv",
    "version": 1
  }
}