Pith Number

pith:W3COPHC4

pith:2018:W3COPHC4GE4N77PBWWRF42DU2E

not attested not anchored not stored refs pending

Entanglement in anisotropic expanding spacetime

Roberto Pierini, Shahpoor Moradi, Stefano Mancini

arxiv:1812.02835 v1 · 2018-12-06 · gr-qc · quant-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{W3COPHC4GE4N77PBWWRF42DU2E}

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	2026-05-17T23:51:30.635273Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6c4e79c5c3138dffde1b5a25e6874d10045d1ce751a5f80ffe8a136044bc495

Aliases

arxiv: 1812.02835 · arxiv_version: 1812.02835v1 · doi: 10.48550/arxiv.1812.02835 · pith_short_12: W3COPHC4GE4N · pith_short_16: W3COPHC4GE4N77PB · pith_short_8: W3COPHC4

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/W3COPHC4GE4N77PBWWRF42DU2E \
  | 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: b6c4e79c5c3138dffde1b5a25e6874d10045d1ce751a5f80ffe8a136044bc495

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0fb06aeed6529379f11d96e6093d875fd4d307ae2c09b2438d84b212820af0ce",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-12-06T22:27:40Z",
    "title_canon_sha256": "1e838d43d1e66ce44bfef8c942bb25ca1e9c4992eb0166076039c9b9e6408221"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.02835",
    "kind": "arxiv",
    "version": 1
  }
}