Pith Number

pith:ZKL5L4SH

pith:2015:ZKL5L4SH3FTW2K22FUWIVRSOAA

not attested not anchored not stored refs pending

Open Weak CAD and its Applications

Bican Xia, Hoon Hong, Jingjun Han, Liyun Dai

arxiv:1507.03834 v3 · 2015-07-14 · cs.SC

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

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	2026-05-17T23:50:07.727667Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca97d5f247d9676d2b5a2d2c8ac64e00024fe7ad75bb70f73ff260b0c32fe48b

Aliases

arxiv: 1507.03834 · arxiv_version: 1507.03834v3 · doi: 10.48550/arxiv.1507.03834 · pith_short_12: ZKL5L4SH3FTW · pith_short_16: ZKL5L4SH3FTW2K22 · pith_short_8: ZKL5L4SH

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/ZKL5L4SH3FTW2K22FUWIVRSOAA \
  | 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: ca97d5f247d9676d2b5a2d2c8ac64e00024fe7ad75bb70f73ff260b0c32fe48b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c1c62db953e5117bd35679febb2e123d3e54d63485e1e02f4f1a3cae04e4178c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SC",
    "submitted_at": "2015-07-14T13:08:14Z",
    "title_canon_sha256": "9822461ac8dc821089fa8a55c81f6576bb0ce2e681fc567ce0eb52ae57ff532e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.03834",
    "kind": "arxiv",
    "version": 3
  }
}