Pith Number

pith:CWOJ25CW

pith:2015:CWOJ25CWNEGP6BYNVRJNKCADJ7

not attested not anchored not stored refs pending

The gravitational Hamiltonian, first order action, Poincar\'e charges and surface terms

Alejandro Corichi, Juan D. Reyes

arxiv:1505.01518 v2 · 2015-05-06 · 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{CWOJ25CWNEGP6BYNVRJNKCADJ7}

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	2026-05-18T01:27:39.341344Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

159c9d7456690cff070dac52d508034fceb8338c45222c82895310f61734b43e

Aliases

arxiv: 1505.01518 · arxiv_version: 1505.01518v2 · doi: 10.48550/arxiv.1505.01518 · pith_short_12: CWOJ25CWNEGP · pith_short_16: CWOJ25CWNEGP6BYN · pith_short_8: CWOJ25CW

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/CWOJ25CWNEGP6BYNVRJNKCADJ7 \
  | 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: 159c9d7456690cff070dac52d508034fceb8338c45222c82895310f61734b43e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b064017b99c6ac30aca74bc7e36d22447f7fa9c7ccf196f514ad449be48584f9",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2015-05-06T21:04:49Z",
    "title_canon_sha256": "59761a009ba640181d2f8ddfd12505d218f2eb3c3b2746181e8a3154fa880c6f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.01518",
    "kind": "arxiv",
    "version": 2
  }
}