Pith Number

pith:5NYMZM3E

pith:2018:5NYMZM3EI45TMB6Y4DSEDXIVKW

not attested not anchored not stored refs pending

Second Order Spiral Splines

Lyle Noakes

arxiv:1801.05105 v2 · 2018-01-16 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5NYMZM3EI45TMB6Y4DSEDXIVKW}

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	2026-05-17T23:45:58.184444Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eb70ccb364473b3607d8e0e441dd15558955bc23bb44738127b17d95ff3b9c0e

Aliases

arxiv: 1801.05105 · arxiv_version: 1801.05105v2 · doi: 10.48550/arxiv.1801.05105 · pith_short_12: 5NYMZM3EI45T · pith_short_16: 5NYMZM3EI45TMB6Y · pith_short_8: 5NYMZM3E

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/5NYMZM3EI45TMB6Y4DSEDXIVKW \
  | 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: eb70ccb364473b3607d8e0e441dd15558955bc23bb44738127b17d95ff3b9c0e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "842a662adcc748324084213c57db08e84bf8e51ffbd2f0fa757041206ab41f3c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-01-16T03:14:59Z",
    "title_canon_sha256": "cb11a00afeea996861fc1b0c55c613e624b96f20bd42596219660b4336e278ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.05105",
    "kind": "arxiv",
    "version": 2
  }
}