Pith Number

pith:UXBL44JU

pith:2019:UXBL44JUKEUIGIZ4JTI2GCNOP3

not attested not anchored not stored refs pending

A response to Rubin & Heitlauf: "Is the expansion of the universe accelerating? All signs still point to yes"

Jacques Colin, Mohamed Rameez, Roya Mohayaee, Subir Sarkar

arxiv:1912.04257 v2 · 2019-12-09 · astro-ph.CO · gr-qc · hep-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UXBL44JUKEUIGIZ4JTI2GCNOP3}

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	2026-07-05T00:49:40.344342Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a5c2be7134512883233c4cd1a309ae7edc9fd33e75dc8ffbcbee1949b7bdcb67

Aliases

arxiv: 1912.04257 · arxiv_version: 1912.04257v2 · doi: 10.48550/arxiv.1912.04257 · pith_short_12: UXBL44JUKEUI · pith_short_16: UXBL44JUKEUIGIZ4 · pith_short_8: UXBL44JU

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/UXBL44JUKEUIGIZ4JTI2GCNOP3 \
  | 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: a5c2be7134512883233c4cd1a309ae7edc9fd33e75dc8ffbcbee1949b7bdcb67

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a408fc3341fe242c99ced6e0b9bec44f26bb83e674ca6a30b04df48b1d44b26b",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2019-12-09T18:51:54Z",
    "title_canon_sha256": "d382b6e236c7f89b932420370dbd672a59bf8e77dc8af0ab837dcc2a50e82f74"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1912.04257",
    "kind": "arxiv",
    "version": 2
  }
}