Pith Number

pith:Z23V7X5W

pith:2020:Z23V7X5WDTOR2ULSCEHEBM5Z2C

not attested not anchored not stored refs pending

Improved Constraints on Anisotropic Birefringent Lorentz Invariance and CPT Violation from Broadband Optical Polarimetry of High Redshift Galaxies

Andrew S. Friedman, Brian G. Keating, David Leon, David Tytler, Fabian Kislat, Roman Gerasimov, Walker Stevens

arxiv:2003.00647 v1 · 2020-03-02 · astro-ph.HE · hep-ex

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Z23V7X5WDTOR2ULSCEHEBM5Z2C}

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	2026-07-05T01:28:07.671795Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ceb75fdfb61cdd1d5172110e40b3b9d0bb61b3d32a4dccb3319e3b4cb06cf3f3

Aliases

arxiv: 2003.00647 · arxiv_version: 2003.00647v1 · doi: 10.48550/arxiv.2003.00647 · pith_short_12: Z23V7X5WDTOR · pith_short_16: Z23V7X5WDTOR2ULS · pith_short_8: Z23V7X5W

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/Z23V7X5WDTOR2ULSCEHEBM5Z2C \
  | 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: ceb75fdfb61cdd1d5172110e40b3b9d0bb61b3d32a4dccb3319e3b4cb06cf3f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ac2d810468ea62215fb2365cd3cb93c6f589a5996162ef168b53cdab3a2f18fe",
    "cross_cats_sorted": [
      "hep-ex"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2020-03-02T04:07:23Z",
    "title_canon_sha256": "b2e16948b8be2d2deed4b58857ae5a9aa4f67b19d2e8cd156ba759ad1950bdd0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2003.00647",
    "kind": "arxiv",
    "version": 1
  }
}