Pith Number

pith:FQIEBRZ3

pith:2012:FQIEBRZ3WYXUYASVNA6OGW2KQN

not attested not anchored not stored refs pending

The advantages of the pentameral symmetry of the starfish

Chengcheng Ji, Jianhao Lv, Liang Wu, Sishuo Wang

arxiv:1202.2219 v2 · 2012-02-10 · q-bio.PE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FQIEBRZ3WYXUYASVNA6OGW2KQN}

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	2026-05-18T04:01:50.653035Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c1040c73bb62f4c0255683ce35b4a834aa53f7ec224de955100bb2272ba950e

Aliases

arxiv: 1202.2219 · arxiv_version: 1202.2219v2 · doi: 10.48550/arxiv.1202.2219 · pith_short_12: FQIEBRZ3WYXU · pith_short_16: FQIEBRZ3WYXUYASV · pith_short_8: FQIEBRZ3

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/FQIEBRZ3WYXUYASVNA6OGW2KQN \
  | 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: 2c1040c73bb62f4c0255683ce35b4a834aa53f7ec224de955100bb2272ba950e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "283de882499206d3d3842291f697073764fdbd52f518b959ebe5d2b6af8250f3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2012-02-10T09:34:31Z",
    "title_canon_sha256": "2569eca0c8b221d13345eb4d68e9ba3e3616586b406bea948dc4a8b389fccc59"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.2219",
    "kind": "arxiv",
    "version": 2
  }
}