Pith Number

pith:LRNFV7LF

pith:2015:LRNFV7LFKXWHIJTGTIQH3KGWMJ

not attested not anchored not stored refs pending

Is Spacetime Countable?

Sean Gryb

arxiv:1501.02671 v1 · 2015-01-12 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LRNFV7LFKXWHIJTGTIQH3KGWMJ}

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	2026-05-18T00:25:44.672679Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5c5a5afd6555ec7426669a207da8d66246db8d542b89bd32ec366e1b5d519f8d

Aliases

arxiv: 1501.02671 · arxiv_version: 1501.02671v1 · doi: 10.48550/arxiv.1501.02671 · pith_short_12: LRNFV7LFKXWH · pith_short_16: LRNFV7LFKXWHIJTG · pith_short_8: LRNFV7LF

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/LRNFV7LFKXWHIJTGTIQH3KGWMJ \
  | 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: 5c5a5afd6555ec7426669a207da8d66246db8d542b89bd32ec366e1b5d519f8d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ec9e8946fe88c2fcabddc9d3c465251c81992b1280b6ee6946ec6f34abba3e5c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2015-01-12T14:49:06Z",
    "title_canon_sha256": "3dfa1fc6047479697fdd0fd547525d547b91511e74b0cd7fa28196a9cc1bab1c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.02671",
    "kind": "arxiv",
    "version": 1
  }
}