Pith Number

pith:BQMM63FI

pith:2019:BQMM63FIR6JJOMDYG2SECUNOLM

not attested not anchored not stored refs pending

Standard-Model Extension Constraints on Lorentz and CPT Violation From Optical Polarimetry of Active Galactic Nuclei

Andrew S. Friedman, Brian G. Keating, David Leon, David Tytler, Delwin Johnson, Gary M. Cole, Grant Teply, Isaac Broudy, Kevin D. Crowley, Roman Gerasimov, Walker Stevens, Yash Melkani

arxiv:1906.07301 v3 · 2019-06-17 · astro-ph.HE · hep-ex · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BQMM63FIR6JJOMDYG2SECUNOLM}

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	2026-07-05T00:25:38.819670Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0c18cf6ca88f9297307836a44151ae5b036df57b4763cb3c50e68d182fc0f3b9

Aliases

arxiv: 1906.07301 · arxiv_version: 1906.07301v3 · doi: 10.48550/arxiv.1906.07301 · pith_short_12: BQMM63FIR6JJ · pith_short_16: BQMM63FIR6JJOMDY · pith_short_8: BQMM63FI

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/BQMM63FIR6JJOMDYG2SECUNOLM \
  | 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: 0c18cf6ca88f9297307836a44151ae5b036df57b4763cb3c50e68d182fc0f3b9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5b9ce6ab817072fba78c9d6c49d991d268b6d4f0cc434c72d030962a2cea9e3d",
    "cross_cats_sorted": [
      "hep-ex",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2019-06-17T23:11:15Z",
    "title_canon_sha256": "bdabe55969e09210f8bb70bb6f83013639b386bd14047fe1225d13a4d99cafd7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.07301",
    "kind": "arxiv",
    "version": 3
  }
}