Pith Number

pith:T6SQSFSL

pith:2016:T6SQSFSL3WNP52OLJ2XBTD72PD

not attested not anchored not stored refs pending

Chandra Observes the End of an Era SN 1987A

David N. Burrows, Eli Dwek, Kari A. Frank, Richard McCray, Sangwook Park, Svetozar A. Zhekov

arxiv:1608.02160 v1 · 2016-08-06 · 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{T6SQSFSL3WNP52OLJ2XBTD72PD}

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	2026-05-18T01:03:48.652952Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9fa509164bdd9afee9cb4eae198ffa78efa3d9a4962f35eb9560a2114474eb7b

Aliases

arxiv: 1608.02160 · arxiv_version: 1608.02160v1 · doi: 10.48550/arxiv.1608.02160 · pith_short_12: T6SQSFSL3WNP · pith_short_16: T6SQSFSL3WNP52OL · pith_short_8: T6SQSFSL

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/T6SQSFSL3WNP52OLJ2XBTD72PD \
  | 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: 9fa509164bdd9afee9cb4eae198ffa78efa3d9a4962f35eb9560a2114474eb7b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d5da5e7aedff87d59e72a72009cba98851b8a59779a574ee2ae95cef5adb31f2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2016-08-06T22:55:31Z",
    "title_canon_sha256": "abc42817c25ae698f7216d8632262daf395218900aa82f5db900a4ce98456c3c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.02160",
    "kind": "arxiv",
    "version": 1
  }
}