Pith Number

pith:NQPQQXHS

pith:2019:NQPQQXHSMCMUV7E6P4OGR2C2QD

not attested not anchored not stored refs pending

Trapping Horizon and Negative Energy

Pei-Ming Ho, Yoshinori Matsuo

arxiv:1905.00898 v2 · 2019-05-02 · 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{NQPQQXHSMCMUV7E6P4OGR2C2QD}

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	2026-05-17T23:39:54.007515Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c1f085cf260994afc9e7f1c68e85a80e4c68080ff9e169256382fd09529a9e4

Aliases

arxiv: 1905.00898 · arxiv_version: 1905.00898v2 · doi: 10.48550/arxiv.1905.00898 · pith_short_12: NQPQQXHSMCMU · pith_short_16: NQPQQXHSMCMUV7E6 · pith_short_8: NQPQQXHS

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/NQPQQXHSMCMUV7E6P4OGR2C2QD \
  | 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: 6c1f085cf260994afc9e7f1c68e85a80e4c68080ff9e169256382fd09529a9e4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7f895ce18cb62e1476a85a6f18406c1023c6ef37c600bca1a3535beec31cf562",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2019-05-02T12:45:44Z",
    "title_canon_sha256": "0c1f8c7e430abedf1e94e6d22be2f5f8be5137475b44abd08ee9a86857c5bcd9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.00898",
    "kind": "arxiv",
    "version": 2
  }
}