Pith Number

pith:6EVM3T3N

pith:2011:6EVM3T3NRFGOGTZDPZXSF6EBE3

not attested not anchored not stored refs pending

Lema\^itre and Hubble: What was discovered - if any - in 1927-29?

A.D. Chernin

arxiv:1107.5695 v1 · 2011-07-28 · astro-ph.CO · physics.hist-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{6EVM3T3NRFGOGTZDPZXSF6EBE3}

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	2026-05-18T04:16:41.540803Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f12acdcf6d894ce34f237e6f22f88126cef54e459445dda8e78e61e487f9a187

Aliases

arxiv: 1107.5695 · arxiv_version: 1107.5695v1 · doi: 10.48550/arxiv.1107.5695 · pith_short_12: 6EVM3T3NRFGO · pith_short_16: 6EVM3T3NRFGOGTZD · pith_short_8: 6EVM3T3N

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/6EVM3T3NRFGOGTZDPZXSF6EBE3 \
  | 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: f12acdcf6d894ce34f237e6f22f88126cef54e459445dda8e78e61e487f9a187

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eb5185843c2b8fa51b976410fa0ce74546529658228190335dc58db85ea91c85",
    "cross_cats_sorted": [
      "physics.hist-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-07-28T12:29:49Z",
    "title_canon_sha256": "a7e12a3dd1662d4ce2ec944977ccb579f2ad99a902d0e981e174c4be6fe76930"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.5695",
    "kind": "arxiv",
    "version": 1
  }
}