Pith Number

pith:MS2QATZR

pith:2018:MS2QATZR2VOA4WKVA6733NAVLH

not attested not anchored not stored refs pending

Is the Cometary Nucleus Extraction Technique Reliable?

Jian-Yang Li, Man-To Hui

arxiv:1807.07993 v1 · 2018-07-20 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MS2QATZR2VOA4WKVA6733NAVLH}

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	2026-05-18T00:08:05.825926Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

64b5004f31d55c0e595507bfbdb41559e5ae846d7a1eab445f02153e0381aef2

Aliases

arxiv: 1807.07993 · arxiv_version: 1807.07993v1 · doi: 10.48550/arxiv.1807.07993 · pith_short_12: MS2QATZR2VOA · pith_short_16: MS2QATZR2VOA4WKV · pith_short_8: MS2QATZR

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/MS2QATZR2VOA4WKVA6733NAVLH \
  | 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: 64b5004f31d55c0e595507bfbdb41559e5ae846d7a1eab445f02153e0381aef2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "18d5741a9e4af57c31c08ffbc32f0c7aa4d5d54ed5d51e29038ab5acaf3a5cde",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2018-07-20T18:29:43Z",
    "title_canon_sha256": "8b8e718fc56b401c25d8392cf938c417321d90fc4ae18304bdd211d639ddf760"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.07993",
    "kind": "arxiv",
    "version": 1
  }
}