Pith Number

pith:4XRPZFFG

pith:2025:4XRPZFFGEEZANCJ2DH6ZEILZED

not attested not anchored not stored refs pending

Black Holes Rule Out Heavy Tachyons

Abraham Loeb, Aidan Morehouse, Mark P. Hertzberg

arxiv:2501.11606 v2 · 2025-01-20 · gr-qc · astro-ph.CO · hep-ph · 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{4XRPZFFGEEZANCJ2DH6ZEILZED}

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	2026-07-05T10:57:32.882419Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5e2fc94a6213206893a19fd92217920e1f1c45a91ca8905dace632aeabb30a2

Aliases

arxiv: 2501.11606 · arxiv_version: 2501.11606v2 · doi: 10.48550/arxiv.2501.11606 · pith_short_12: 4XRPZFFGEEZA · pith_short_16: 4XRPZFFGEEZANCJ2 · pith_short_8: 4XRPZFFG

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/4XRPZFFGEEZANCJ2DH6ZEILZED \
  | 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: e5e2fc94a6213206893a19fd92217920e1f1c45a91ca8905dace632aeabb30a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0c7a866da50158ca551e1337223963a896250559b4cb2b4e962dc5e5e4b59dd9",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-ph",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2025-01-20T17:07:23Z",
    "title_canon_sha256": "a1b875899fcfa2b303b0359766e16fe561dd053f4935a3122a3f330f2c2980ea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2501.11606",
    "kind": "arxiv",
    "version": 2
  }
}