Pith Number

pith:IJXEYV5P

pith:2013:IJXEYV5PH2H6UCS6DLFAZSNCB6

not attested not anchored not stored refs pending

Evolution of the Radio Remnant of Supernova 1987A: Morphological Changes from Day 7000

A. K. Tzioumis, B. M. Gaensler, C.-Y. Ng, G. Zanardo, L. Staveley-Smith, R. N. Manchester, T. M. Potter

arxiv:1310.3913 v1 · 2013-10-15 · 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{IJXEYV5PH2H6UCS6DLFAZSNCB6}

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	2026-05-18T01:47:05.461392Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

426e4c57af3e8fea0a5e1aca0cc9a20f8d062502e19dc0aec013b9087c87d5ce

Aliases

arxiv: 1310.3913 · arxiv_version: 1310.3913v1 · doi: 10.48550/arxiv.1310.3913 · pith_short_12: IJXEYV5PH2H6 · pith_short_16: IJXEYV5PH2H6UCS6 · pith_short_8: IJXEYV5P

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/IJXEYV5PH2H6UCS6DLFAZSNCB6 \
  | 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: 426e4c57af3e8fea0a5e1aca0cc9a20f8d062502e19dc0aec013b9087c87d5ce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d2e42733776c2abf750f75d160f9336c7417dcc69c4d18b26c857ee3515b3bd5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-10-15T04:08:48Z",
    "title_canon_sha256": "321d309ced5efd5face66bf1bbb7019473e9ef63950750010fefcd0aff54e8d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.3913",
    "kind": "arxiv",
    "version": 1
  }
}