Pith Number

pith:JO5SJ2TG

pith:2016:JO5SJ2TGVPWSRXYLS6GN7IMXF6

not attested not anchored not stored refs pending

Endless love: On the termination of a playground number game

Iain G. Johnston

arxiv:1602.03556 v1 · 2016-01-25 · math.HO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JO5SJ2TGVPWSRXYLS6GN7IMXF6}

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	2026-05-18T01:20:58.493492Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4bbb24ea66abed28df0b978cdfa1972f9f2303fe9c72d2545250cd26b4082abb

Aliases

arxiv: 1602.03556 · arxiv_version: 1602.03556v1 · doi: 10.48550/arxiv.1602.03556 · pith_short_12: JO5SJ2TGVPWS · pith_short_16: JO5SJ2TGVPWSRXYL · pith_short_8: JO5SJ2TG

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/JO5SJ2TGVPWSRXYLS6GN7IMXF6 \
  | 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: 4bbb24ea66abed28df0b978cdfa1972f9f2303fe9c72d2545250cd26b4082abb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0dfa4c1ef8f317e12406101492c8d3380498cddbe847fd168e0b5e8d1d9df792",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2016-01-25T17:26:33Z",
    "title_canon_sha256": "a834fb82b71cd7a1d94b9687f42b8d09d258e2945697a1caf6ebd996cfa35dd8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.03556",
    "kind": "arxiv",
    "version": 1
  }
}