Pith Number

pith:7A7FEXRH

pith:2018:7A7FEXRHLZBK6J7NU7NFPC2S4S

not attested not anchored not stored refs pending

Comparison of frequency estimation methods for wave energy control

John V. Ringwood, Marta Molinas, Olav B. Fosso, Paula B. Garcia-Rosa

arxiv:1804.02247 v1 · 2018-04-06 · cs.SY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7A7FEXRHLZBK6J7NU7NFPC2S4S}

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	2026-05-18T00:19:05.417121Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f83e525e275e42af27eda7da578b52e4bc4cdaf051af1529b02f724c2e5d472f

Aliases

arxiv: 1804.02247 · arxiv_version: 1804.02247v1 · doi: 10.48550/arxiv.1804.02247 · pith_short_12: 7A7FEXRHLZBK · pith_short_16: 7A7FEXRHLZBK6J7N · pith_short_8: 7A7FEXRH

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/7A7FEXRHLZBK6J7NU7NFPC2S4S \
  | 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: f83e525e275e42af27eda7da578b52e4bc4cdaf051af1529b02f724c2e5d472f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d6bca9d161502384b49ea3383cb4af99486b67367d85702d635e3c9ab94f68f4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SY",
    "submitted_at": "2018-04-06T13:10:01Z",
    "title_canon_sha256": "bf597532e9d627508a93d82353f5757d5864b67e4869a8cbc0d10b176ecc1e8d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.02247",
    "kind": "arxiv",
    "version": 1
  }
}