Pith Number

pith:U6D2QQMF

pith:2025:U6D2QQMFO2RXTHLG5KG5Z23WDE

not attested not anchored not stored refs pending

The coordinate functions of the Heighway dragon curve

Danilo Antonio Caprio

arxiv:2506.05541 v2 · 2025-06-05 · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U6D2QQMFO2RXTHLG5KG5Z23WDE}

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	2026-07-05T11:26:52.323612Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a787a8418576a3799d66ea8ddceb76193d09fe1eda74ca0ef91753e79037e3c1

Aliases

arxiv: 2506.05541 · arxiv_version: 2506.05541v2 · doi: 10.48550/arxiv.2506.05541 · pith_short_12: U6D2QQMFO2RX · pith_short_16: U6D2QQMFO2RXTHLG · pith_short_8: U6D2QQMF

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/U6D2QQMFO2RXTHLG5KG5Z23WDE \
  | 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: a787a8418576a3799d66ea8ddceb76193d09fe1eda74ca0ef91753e79037e3c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c91e08483aeb54959da42f131cb952c5e49ca9119a00aebea7fde79347b35f25",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2025-06-05T19:44:35Z",
    "title_canon_sha256": "8f33bb5eddc7a0b7227fcc7a13d1d82341394af1929ce1e12cafd7ce54a67132"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.05541",
    "kind": "arxiv",
    "version": 2
  }
}