Pith Number

pith:U7CUPGLR

pith:2013:U7CUPGLRNYWMPUGZJ4UFZMFXKF

not attested not anchored not stored refs pending

Negative Energy Seen By Accelerated Observers

L. H. Ford, Thomas A. Roman

arxiv:1302.2859 v1 · 2013-02-12 · gr-qc · hep-th · 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{U7CUPGLRNYWMPUGZJ4UFZMFXKF}

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	2026-05-18T02:40:18.837916Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7c54799716e2cc7d0d94f285cb0b751737c72738df57629e7d19be7349a52f3

Aliases

arxiv: 1302.2859 · arxiv_version: 1302.2859v1 · doi: 10.48550/arxiv.1302.2859 · pith_short_12: U7CUPGLRNYWM · pith_short_16: U7CUPGLRNYWMPUGZ · pith_short_8: U7CUPGLR

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/U7CUPGLRNYWMPUGZJ4UFZMFXKF \
  | 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: a7c54799716e2cc7d0d94f285cb0b751737c72738df57629e7d19be7349a52f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1c11ea927e76d6bc20ea1a5bbd8a3b3dead7210ee462be6cad8d384570c1f49f",
    "cross_cats_sorted": [
      "hep-th",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2013-02-12T16:49:05Z",
    "title_canon_sha256": "7fd603a99cad844f742d138f888cc897ac5727bc7696dd42d65e5d0e147d0f5f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.2859",
    "kind": "arxiv",
    "version": 1
  }
}