Pith Number

pith:XNBTOCAE

pith:2016:XNBTOCAENM46DI4CNRYMYORA6Y

not attested not anchored not stored refs pending

New Limits on the Photon Mass with Radio Pulsars in the Magellanic Clouds

Er-Kang Zhang, Jun-Jie Wei, Song-Bo Zhang, Xue-Feng Wu

arxiv:1608.07675 v2 · 2016-08-27 · astro-ph.HE · astro-ph.CO · hep-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{XNBTOCAENM46DI4CNRYMYORA6Y}

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	2026-05-18T00:49:15.962124Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bb433708046b39e1a3826c70cc3a20f610364e00f5e8e5fb2eef1d574f5e2615

Aliases

arxiv: 1608.07675 · arxiv_version: 1608.07675v2 · doi: 10.48550/arxiv.1608.07675 · pith_short_12: XNBTOCAENM46 · pith_short_16: XNBTOCAENM46DI4C · pith_short_8: XNBTOCAE

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/XNBTOCAENM46DI4CNRYMYORA6Y \
  | 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: bb433708046b39e1a3826c70cc3a20f610364e00f5e8e5fb2eef1d574f5e2615

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ec8f3dc3211d0625a3794c10072ddc89b6d7bc96d5d80e7bf16144570780f619",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2016-08-27T07:39:18Z",
    "title_canon_sha256": "89adff5c5bc66358446bed2be47e39223f987fc076c230cf97ab3ae17e400195"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.07675",
    "kind": "arxiv",
    "version": 2
  }
}