Pith Number

pith:P7O2S24O

pith:2014:P7O2S24OP75GQEK2UPTMTN4MF7

not attested not anchored not stored refs pending

Isochronous Spacetimes

Fabio Briscese, Francesco Calogero

arxiv:1406.7156 v1 · 2014-06-27 · gr-qc · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{P7O2S24OP75GQEK2UPTMTN4MF7}

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	2026-05-18T01:35:38.388392Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7fdda96b8e7ffa68115aa3e6c9b78c2fd33b7a972bfd9c0f2fbe4bd568810916

Aliases

arxiv: 1406.7156 · arxiv_version: 1406.7156v1 · doi: 10.48550/arxiv.1406.7156 · pith_short_12: P7O2S24OP75G · pith_short_16: P7O2S24OP75GQEK2 · pith_short_8: P7O2S24O

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/P7O2S24OP75GQEK2UPTMTN4MF7 \
  | 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: 7fdda96b8e7ffa68115aa3e6c9b78c2fd33b7a972bfd9c0f2fbe4bd568810916

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "311e6e1a9241771909a47d1e8139a3206b0175c84d26c1c976066ed813e2e83b",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2014-06-27T11:46:01Z",
    "title_canon_sha256": "1ab4eb31089824dddd1a331b9c0fdead6461fd7d629c91499b4db39c0835ee54"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.7156",
    "kind": "arxiv",
    "version": 1
  }
}