Pith Number

pith:WC62JFVN

pith:2012:WC62JFVNQCKJ4NBWSIHBRFR4HS

not attested not anchored not stored refs pending

Gravitation and vacuum entanglement entropy

Ted Jacobson

arxiv:1204.6349 v1 · 2012-04-28 · 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{WC62JFVNQCKJ4NBWSIHBRFR4HS}

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	2026-05-18T03:41:10.661270Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b0bda496ad80949e3436920e18963c3cbc556a525fab009e3b231f26aef21ddf

Aliases

arxiv: 1204.6349 · arxiv_version: 1204.6349v1 · doi: 10.48550/arxiv.1204.6349 · pith_short_12: WC62JFVNQCKJ · pith_short_16: WC62JFVNQCKJ4NBW · pith_short_8: WC62JFVN

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/WC62JFVNQCKJ4NBWSIHBRFR4HS \
  | 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: b0bda496ad80949e3436920e18963c3cbc556a525fab009e3b231f26aef21ddf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f3001b6c273ff08bb38c0a13207ef99c4945bfd02f36b9061999b61009b684f7",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2012-04-28T00:10:14Z",
    "title_canon_sha256": "02bed30d75e44935dd2d5494cb8a1f53b744a6718432cb614cf7fe6fae7fe389"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.6349",
    "kind": "arxiv",
    "version": 1
  }
}