Pith Number

pith:DA3FSU52

pith:2020:DA3FSU52QLTQHJIVOARDIF2ILU

not attested not anchored not stored refs pending

From Supernova to Remnant: Tracking the Evolution of the Oldest Known X-ray Supernovae

Purdue), Vandana Ramakrishnan (University of Chicago, Vikram V. Dwarkadas (University of Chicago)

arxiv:2008.09137 v1 · 2020-08-20 · 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{DA3FSU52QLTQHJIVOARDIF2ILU}

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	2026-07-05T01:40:42.341738Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18365953ba82e703a51570223417485d39c925f2d1e599ec4d7d344462eb247d

Aliases

arxiv: 2008.09137 · arxiv_version: 2008.09137v1 · doi: 10.48550/arxiv.2008.09137 · pith_short_12: DA3FSU52QLTQ · pith_short_16: DA3FSU52QLTQHJIV · pith_short_8: DA3FSU52

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/DA3FSU52QLTQHJIVOARDIF2ILU \
  | 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: 18365953ba82e703a51570223417485d39c925f2d1e599ec4d7d344462eb247d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bbb3de8e86dcf237913b313c47794a8d0ae8d7967f9664cd527eddb434e1bdfa",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2020-08-20T18:03:26Z",
    "title_canon_sha256": "6a54be7e1320abbe35f033e939f24aceb4a5afcfce6c902416c745c194a74a25"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2008.09137",
    "kind": "arxiv",
    "version": 1
  }
}