Pith Number

pith:REBOZA2R

pith:2012:REBOZA2RYQMB2KV7CBQKDEQYKN

not attested not anchored not stored refs pending

How to Grow an Organism Inside-Out: Evolution of an internal skeleton from an external skeleton in bilateral organisms

Eric Werner

arxiv:1207.3624 v1 · 2012-07-16 · q-bio.TO · q-bio.MN · q-bio.SC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{REBOZA2RYQMB2KV7CBQKDEQYKN}

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	2026-05-18T03:51:00.594847Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8902ec8351c4181d2abf1060a19218537a2162616ec348d288ab169bb39b723b

Aliases

arxiv: 1207.3624 · arxiv_version: 1207.3624v1 · doi: 10.48550/arxiv.1207.3624 · pith_short_12: REBOZA2RYQMB · pith_short_16: REBOZA2RYQMB2KV7 · pith_short_8: REBOZA2R

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/REBOZA2RYQMB2KV7CBQKDEQYKN \
  | 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: 8902ec8351c4181d2abf1060a19218537a2162616ec348d288ab169bb39b723b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7182ff4e8c45ced365079cb38d0ff555f3ac233151e6f90255b2c177440426fb",
    "cross_cats_sorted": [
      "q-bio.MN",
      "q-bio.SC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.TO",
    "submitted_at": "2012-07-16T10:52:15Z",
    "title_canon_sha256": "e95b958afe09ad3ed3eb7b0074099bdf3e022e812595610a2e850d8ce335ba59"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.3624",
    "kind": "arxiv",
    "version": 1
  }
}