Pith Number

pith:YMJFSX4H

pith:2008:YMJFSX4HFJ32E7FFWMMQ6SVZOA

not attested not anchored not stored refs pending

The kinematic origin of the cosmological redshift

David W. Hogg, Emory F. Bunn

arxiv:0808.1081 v2 · 2008-08-07 · physics.pop-ph · astro-ph · gr-qc · physics.ed-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{YMJFSX4HFJ32E7FFWMMQ6SVZOA}

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	2026-05-18T04:37:22.971366Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c312595f872a77a27ca5b3190f4ab9703103115eab0bdf1c268d89d6000b78df

Aliases

arxiv: 0808.1081 · arxiv_version: 0808.1081v2 · doi: 10.48550/arxiv.0808.1081 · pith_short_12: YMJFSX4HFJ32 · pith_short_16: YMJFSX4HFJ32E7FF · pith_short_8: YMJFSX4H

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/YMJFSX4HFJ32E7FFWMMQ6SVZOA \
  | 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: c312595f872a77a27ca5b3190f4ab9703103115eab0bdf1c268d89d6000b78df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d43385c984a40681359fde061d8f57c1b873ee403b5a1b52a6e1fcd23aa56481",
    "cross_cats_sorted": [
      "astro-ph",
      "gr-qc",
      "physics.ed-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.pop-ph",
    "submitted_at": "2008-08-07T17:50:32Z",
    "title_canon_sha256": "acd58f8ba24cc37924f679b55397fc82e90ff2867a58f84eff0cc3da148c5d4f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0808.1081",
    "kind": "arxiv",
    "version": 2
  }
}