Pith Number

pith:U7DLO5YS

pith:2017:U7DLO5YST3OMQ7FLXWFJCAGS76

not attested not anchored not stored refs pending

Prediscovery Observations and Orbit of Comet C/2017 K2 (PANSTARRS)

David Clark, David Jewitt, Man-To Hui

arxiv:1711.06355 v1 · 2017-11-16 · 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{U7DLO5YST3OMQ7FLXWFJCAGS76}

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	2026-05-18T00:27:17.873566Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7c6b777129edcc87cabbd8a9100d2ffa8edd8bdc172b9b19a737f39b66b33da

Aliases

arxiv: 1711.06355 · arxiv_version: 1711.06355v1 · doi: 10.48550/arxiv.1711.06355 · pith_short_12: U7DLO5YST3OM · pith_short_16: U7DLO5YST3OMQ7FL · pith_short_8: U7DLO5YS

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/U7DLO5YST3OMQ7FLXWFJCAGS76 \
  | 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: a7c6b777129edcc87cabbd8a9100d2ffa8edd8bdc172b9b19a737f39b66b33da

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c6d3c687743636055c413fd3cb08b5ffe114e0cb48c7603fd3442604c2e17155",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2017-11-16T23:41:04Z",
    "title_canon_sha256": "e45e6a489bcf0e7f1ad8b6bcf5fd8663109e44895db4a5459ba828fd5c3233f1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.06355",
    "kind": "arxiv",
    "version": 1
  }
}