Pith Number

pith:J3REG237

pith:2018:J3REG237ISOA2M2YOTV5LDWCJ3

not attested not anchored not stored refs pending

Testing the Weak Equivalence Principle using Optical and Near-Infrared Crab Pulses

Amy Brown, Beili Hu, Calvin Leung, Hien Nguyen, Jason Gallicchio, Sophia Harris

arxiv:1804.04722 v1 · 2018-04-12 · astro-ph.HE · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{J3REG237ISOA2M2YOTV5LDWCJ3}

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	2026-05-18T00:10:37.943225Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4ee2436b7f449c0d335874ebd58ec24eeee0e59401d97e593be2fbdd7af3bfc4

Aliases

arxiv: 1804.04722 · arxiv_version: 1804.04722v1 · doi: 10.48550/arxiv.1804.04722 · pith_short_12: J3REG237ISOA · pith_short_16: J3REG237ISOA2M2Y · pith_short_8: J3REG237

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/J3REG237ISOA2M2YOTV5LDWCJ3 \
  | 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: 4ee2436b7f449c0d335874ebd58ec24eeee0e59401d97e593be2fbdd7af3bfc4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b57dfc9174ed69f8126d48880670ee062896630102484667d47f776ee822175a",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-04-12T20:41:53Z",
    "title_canon_sha256": "1b48b67e662a19304d856f64b8cf69a57407ffe0409d119ae895c20259b04203"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.04722",
    "kind": "arxiv",
    "version": 1
  }
}