Pith Number

pith:HCE6ORMN

pith:2014:HCE6ORMNXS4Q2BGVFCVIOBC2AM

not attested not anchored not stored refs pending

Py-oopsi: the python implementation of the fast-oopsi algorithm

Benyuan Liu

arxiv:1405.6181 v1 · 2014-05-06 · cs.CE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HCE6ORMNXS4Q2BGVFCVIOBC2AM}

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	2026-05-18T02:51:13.870764Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3889e7458dbcb90d04d528aa87045a030a2ad106dc2886e85c006451e8ed7ea6

Aliases

arxiv: 1405.6181 · arxiv_version: 1405.6181v1 · doi: 10.48550/arxiv.1405.6181 · pith_short_12: HCE6ORMNXS4Q · pith_short_16: HCE6ORMNXS4Q2BGV · pith_short_8: HCE6ORMN

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/HCE6ORMNXS4Q2BGVFCVIOBC2AM \
  | 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: 3889e7458dbcb90d04d528aa87045a030a2ad106dc2886e85c006451e8ed7ea6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d1c79ab48fa4bd2c765da15e94d11398da142f691f07145e3b9c464eae6aa50",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "cs.CE",
    "submitted_at": "2014-05-06T06:05:04Z",
    "title_canon_sha256": "0aa710a291678e8b453fa0cd69a8606674ecce10bd9bda305347725885950d1b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.6181",
    "kind": "arxiv",
    "version": 1
  }
}