Pith Number

pith:FPB7KHCI

pith:2014:FPB7KHCIFGVP6ZUFE56LOPDZM2

not attested not anchored not stored refs pending

How fundamental are fundamental constants?

M. J. Duff

arxiv:1412.2040 v2 · 2014-12-05 · hep-th · gr-qc · hep-ph · physics.hist-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{FPB7KHCIFGVP6ZUFE56LOPDZM2}

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	2026-05-18T02:30:54.549824Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2bc3f51c4829aaff6685277cb73c7966b53eed0b9a8d9265998190b0682f7cbc

Aliases

arxiv: 1412.2040 · arxiv_version: 1412.2040v2 · doi: 10.48550/arxiv.1412.2040 · pith_short_12: FPB7KHCIFGVP · pith_short_16: FPB7KHCIFGVP6ZUF · pith_short_8: FPB7KHCI

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/FPB7KHCIFGVP6ZUFE56LOPDZM2 \
  | 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: 2bc3f51c4829aaff6685277cb73c7966b53eed0b9a8d9265998190b0682f7cbc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "14d58185ad2e092360276a8cfc532fb8673e8b35dada4cf91562d9e7a81c0471",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph",
      "physics.hist-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2014-12-05T16:02:42Z",
    "title_canon_sha256": "a250f647555c88f3a062f7c44ef0274e14ef3b64306c1394f9e47b372d2b5356"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.2040",
    "kind": "arxiv",
    "version": 2
  }
}