Pith Number

pith:53PJTCDV

pith:2012:53PJTCDVC7BZXB3LQ5MQGF5LGW

not attested not anchored not stored refs pending

A note on the survival of the sungrazing comet C/2011 W3 (Lovejoy) within the Roche limit

B. Gundlach, H. U. Keller, J. Blum, Yu. V. Skorov

arxiv:1203.1808 v2 · 2012-03-08 · 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{53PJTCDVC7BZXB3LQ5MQGF5LGW}

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	2026-05-18T03:43:42.257354Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eede99887517c39b876b87590317ab3589dd9cc986f05272b8de5f21cc57cb0e

Aliases

arxiv: 1203.1808 · arxiv_version: 1203.1808v2 · doi: 10.48550/arxiv.1203.1808 · pith_short_12: 53PJTCDVC7BZ · pith_short_16: 53PJTCDVC7BZXB3L · pith_short_8: 53PJTCDV

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/53PJTCDVC7BZXB3LQ5MQGF5LGW \
  | 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: eede99887517c39b876b87590317ab3589dd9cc986f05272b8de5f21cc57cb0e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7abb152a3144637f7b027a34493787d4ee5f91bca4a9c9c8cfb4d2edb4c120e5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2012-03-08T14:20:02Z",
    "title_canon_sha256": "e99ad5f3fc04476f8e671e7bb0b71e7abddda095d331a08e1c283676fd9134ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.1808",
    "kind": "arxiv",
    "version": 2
  }
}