Pith Number

pith:XZRFB7FO

pith:2015:XZRFB7FO4ONT6FH7FEL7DFY62E

not attested not anchored not stored refs pending

A Pseudospectral Method for Gravitational Wave Collapse

Andreas Weyhausen, Bernd Bruegmann, David Hilditch

arxiv:1504.04732 v2 · 2015-04-18 · gr-qc

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XZRFB7FO4ONT6FH7FEL7DFY62E}

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	2026-05-18T01:18:33.870656Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be6250fcaee39b3f14ff2917f1971ed11ac518e2846ecd69113a036f64f4388f

Aliases

arxiv: 1504.04732 · arxiv_version: 1504.04732v2 · doi: 10.48550/arxiv.1504.04732 · pith_short_12: XZRFB7FO4ONT · pith_short_16: XZRFB7FO4ONT6FH7 · pith_short_8: XZRFB7FO

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/XZRFB7FO4ONT6FH7FEL7DFY62E \
  | 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: be6250fcaee39b3f14ff2917f1971ed11ac518e2846ecd69113a036f64f4388f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ee4e9ce7f444676ebee86f1644bfc272b2a435b832c8fbf2186f406d16cb041",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2015-04-18T15:17:05Z",
    "title_canon_sha256": "7293d5dc82c63160274ec4a2a183b6e3fc14fb5852773f253d64f866137923d9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.04732",
    "kind": "arxiv",
    "version": 2
  }
}