Pith Number

pith:K3DO7OVG

pith:2011:K3DO7OVGTMPHIXVXBSKQOKBEHY

not attested not anchored not stored refs pending

New Results from an old Friend: The Crab Nebula and its Pulsar

Martin C. Weisskopf

arxiv:1111.3315 v1 · 2011-11-14 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{K3DO7OVGTMPHIXVXBSKQOKBEHY}

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	2026-05-18T04:08:22.575263Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

56c6efbaa69b1e745eb70c950728243e1cf6cb417f900f40c0b134eefe4e65f8

Aliases

arxiv: 1111.3315 · arxiv_version: 1111.3315v1 · doi: 10.48550/arxiv.1111.3315 · pith_short_12: K3DO7OVGTMPH · pith_short_16: K3DO7OVGTMPHIXVX · pith_short_8: K3DO7OVG

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/K3DO7OVGTMPHIXVXBSKQOKBEHY \
  | 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: 56c6efbaa69b1e745eb70c950728243e1cf6cb417f900f40c0b134eefe4e65f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3fd77b50452b73c599569bb2788ad327ab4e3c6d2734209fc0356157bc7bd672",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-11-14T18:31:04Z",
    "title_canon_sha256": "feee6abaee8bb9382c8b970825ff041b74f18f36674da9754583c917801b602d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.3315",
    "kind": "arxiv",
    "version": 1
  }
}