Pith Number

pith:FBTSEPQO

pith:2015:FBTSEPQO2NBNMWW2SLNWYRQMIE

not attested not anchored not stored refs pending

The thermodynamics of quantum spacetime histories

Lee Smolin

arxiv:1510.03858 v1 · 2015-10-13 · gr-qc · 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{FBTSEPQO2NBNMWW2SLNWYRQMIE}

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	2026-05-18T00:29:33.778281Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2867223e0ed342d65ada92db6c460c410c20860e5af25b27f84619aac4183f3c

Aliases

arxiv: 1510.03858 · arxiv_version: 1510.03858v1 · doi: 10.48550/arxiv.1510.03858 · pith_short_12: FBTSEPQO2NBN · pith_short_16: FBTSEPQO2NBNMWW2 · pith_short_8: FBTSEPQO

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/FBTSEPQO2NBNMWW2SLNWYRQMIE \
  | 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: 2867223e0ed342d65ada92db6c460c410c20860e5af25b27f84619aac4183f3c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "16bdc72225c76931fa630d275058e3cc9f45e9f7078540963c1e7eb792f65a2d",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2015-10-13T20:12:48Z",
    "title_canon_sha256": "4bc59b1e214c865ab9cb57b6d7a6c7a9fb5fa77cbad928a21da9f707b782fa14"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.03858",
    "kind": "arxiv",
    "version": 1
  }
}