Pith Number

pith:SR2JAQ4P

pith:2001:SR2JAQ4PXPZE2M377RKFJO5FZH

not attested not anchored not stored refs pending

Evolution of the Radio Remnant of SN 1987A: 1990 -- 2001

A. K. Tzioumis, B. M. Gaensler, J. E. Reynolds, K. J. Kesteven, L. Staveley-Smith, N. S. Bizunok, R. N. Manchester, V. C. Wheaton

arxiv:astro-ph/0110693 v1 · 2001-10-31 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SR2JAQ4PXPZE2M377RKFJO5FZH}

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	2026-07-04T16:24:23.361257Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

947490438fbbf24d337ffc5454bba5c9c6915c0ec90eaad5327e55fda1862b06

Aliases

arxiv: astro-ph/0110693 · arxiv_version: astro-ph/0110693v1 · doi: 10.48550/arxiv.astro-ph/0110693 · pith_short_12: SR2JAQ4PXPZE · pith_short_16: SR2JAQ4PXPZE2M37 · pith_short_8: SR2JAQ4P

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/SR2JAQ4PXPZE2M377RKFJO5FZH \
  | 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: 947490438fbbf24d337ffc5454bba5c9c6915c0ec90eaad5327e55fda1862b06

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8870712bc47d7b90326264ed54a9599215d81426fa1e030dda944c6be9a29e42",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-10-31T11:04:09Z",
    "title_canon_sha256": "11de6bd163bc372a393af63cb81c9bb76b79a52086bb98ef78b3877d65125a61"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0110693",
    "kind": "arxiv",
    "version": 1
  }
}