Pith Number

pith:6II3W4E2

pith:2018:6II3W4E2FBCFR7UG3H4SRPQTWO

not attested not anchored not stored refs pending

Hidden Messenger from Quantum Geometry: Towards Information Conservation in Quantum Gravity

Qing-yu Cai, Xiao-Kan Guo

arxiv:1804.06408 v2 · 2018-04-17 · 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{6II3W4E2FBCFR7UG3H4SRPQTWO}

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	2026-05-18T00:13:50.534290Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f211bb709a284458fe86d9f928be13b3bed0f8255ddf3f9d972eea1d1ca2d7ee

Aliases

arxiv: 1804.06408 · arxiv_version: 1804.06408v2 · doi: 10.48550/arxiv.1804.06408 · pith_short_12: 6II3W4E2FBCF · pith_short_16: 6II3W4E2FBCFR7UG · pith_short_8: 6II3W4E2

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/6II3W4E2FBCFR7UG3H4SRPQTWO \
  | 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: f211bb709a284458fe86d9f928be13b3bed0f8255ddf3f9d972eea1d1ca2d7ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea7dd2cb34fb69ba6770e311a534d9db96b1610edf4120e86ab2726576fa7ff3",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-04-17T15:50:56Z",
    "title_canon_sha256": "3916e51cdd270eefe92678c3756639b366366fd99bb00bde3ca09a653ae3c165"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.06408",
    "kind": "arxiv",
    "version": 2
  }
}