Pith Number

pith:QZFOXIVB

pith:2019:QZFOXIVBEPK46C6PST2DZM2QTY

not attested not anchored not stored refs pending

From Momentum Expansions to Post-Minkowskian Hamiltonians by Computer Algebra Algorithms

A. Maier, C. Schneider, G. Sch\"afer, J. Bl\"umlein, P. Marquard

arxiv:1911.04411 v1 · 2019-11-11 · gr-qc · astro-ph.SR · 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{QZFOXIVBEPK46C6PST2DZM2QTY}

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	2026-07-05T00:18:27.780785Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

864aeba2a123d5cf0bcf94f43cb3509e0b7a97c2508b4fa05bf1e8c423ae99ce

Aliases

arxiv: 1911.04411 · arxiv_version: 1911.04411v1 · doi: 10.48550/arxiv.1911.04411 · pith_short_12: QZFOXIVBEPK4 · pith_short_16: QZFOXIVBEPK46C6P · pith_short_8: QZFOXIVB

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/QZFOXIVBEPK46C6PST2DZM2QTY \
  | 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: 864aeba2a123d5cf0bcf94f43cb3509e0b7a97c2508b4fa05bf1e8c423ae99ce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "abdd0122556d931c7ed362a9161fd372ce6fc137e62cfe9958c9b0046a5ab583",
    "cross_cats_sorted": [
      "astro-ph.SR",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2019-11-11T17:35:30Z",
    "title_canon_sha256": "cb878c21ed5c5423251548ae44b03c346126fff86360cc9826aafa749709e684"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1911.04411",
    "kind": "arxiv",
    "version": 1
  }
}