Pith Number

pith:I77W4YAS

pith:2013:I77W4YASE33WFX3LASGZVND2MV

not attested not anchored not stored refs pending

SN 1987A at High Resolution

Daniel Dewey

arxiv:1301.0844 v1 · 2013-01-04 · 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{I77W4YASE33WFX3LASGZVND2MV}

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	2026-05-18T03:37:07.576566Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

47ff6e601226f762df6b048d9ab47a656faf66764cf9ea6098318c61455e1845

Aliases

arxiv: 1301.0844 · arxiv_version: 1301.0844v1 · doi: 10.48550/arxiv.1301.0844 · pith_short_12: I77W4YASE33W · pith_short_16: I77W4YASE33WFX3L · pith_short_8: I77W4YAS

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/I77W4YASE33WFX3LASGZVND2MV \
  | 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: 47ff6e601226f762df6b048d9ab47a656faf66764cf9ea6098318c61455e1845

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e549ce2c8854b3b2fbdba5cacf019b3553efe3f579289601375ccdbc167f1b1b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-01-04T22:27:35Z",
    "title_canon_sha256": "d0f2e884d2b0d5538bada4a8e5088e15569f493f08f408e48ad7ce49a229825a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.0844",
    "kind": "arxiv",
    "version": 1
  }
}