Pith Number

pith:X5VMOGST

pith:2017:X5VMOGSTUMWNDVYZSH2JMBNIBY

not attested not anchored not stored refs pending

The Hubble constant from SN Refsdal

G. M. Bernstein, J. M. Diego, J. Vega-Ferrero, V. Miranda

arxiv:1712.05800 v2 · 2017-12-15 · astro-ph.CO · 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{X5VMOGSTUMWNDVYZSH2JMBNIBY}

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	2026-05-18T00:22:57.190174Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bf6ac71a53a32cd1d71991f49605a80e08e5a2368524d3e34ec35e876f167739

Aliases

arxiv: 1712.05800 · arxiv_version: 1712.05800v2 · doi: 10.48550/arxiv.1712.05800 · pith_short_12: X5VMOGSTUMWN · pith_short_16: X5VMOGSTUMWNDVYZ · pith_short_8: X5VMOGST

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/X5VMOGSTUMWNDVYZSH2JMBNIBY \
  | 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: bf6ac71a53a32cd1d71991f49605a80e08e5a2368524d3e34ec35e876f167739

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "552952a413e705272a31cc55da665b226ac75f90528e8126cbaffed0cfd5d68c",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2017-12-15T19:00:00Z",
    "title_canon_sha256": "31a6483d02d7ff33d668324e8a3b09eb474077d136f45ac20257a946cf5c9c87"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.05800",
    "kind": "arxiv",
    "version": 2
  }
}