Pith Number

pith:4FYF2J6M

pith:2016:4FYF2J6MLWGFHXUIN76TYFVDSD

not attested not anchored not stored refs pending

Universal Shape Replicators via Self-Assembly with Attractive and Repulsive Forces

Cameron Chalk, Eric Martinez, Erik D. Demaine, Luis Vega, Martin L. Demaine, Robert Schweller, Tim Wylie

arxiv:1608.00477 v1 · 2016-08-01 · cs.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4FYF2J6MLWGFHXUIN76TYFVDSD}

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	2026-05-18T01:10:11.729052Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1705d27cc5d8c53de886ffd3c16a390d01b0d7ec1602f4b0cb3f4a1c4c4998f

Aliases

arxiv: 1608.00477 · arxiv_version: 1608.00477v1 · doi: 10.48550/arxiv.1608.00477 · pith_short_12: 4FYF2J6MLWGF · pith_short_16: 4FYF2J6MLWGFHXUI · pith_short_8: 4FYF2J6M

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/4FYF2J6MLWGFHXUIN76TYFVDSD \
  | 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: e1705d27cc5d8c53de886ffd3c16a390d01b0d7ec1602f4b0cb3f4a1c4c4998f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0b10d7f35fead1ede6507f93ec820a73cd99c433a101e791d0854e844dfb7860",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2016-08-01T16:02:35Z",
    "title_canon_sha256": "1dd1db6a73676962019f2c8ed8537d186e58222d4e8f136d9632bd1a642f0be5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.00477",
    "kind": "arxiv",
    "version": 1
  }
}