Pith Number

pith:IEBPRQFZ

pith:2010:IEBPRQFZKAYKX55YXWKCFGEPJQ

not attested not anchored not stored refs pending

SWIFT J1749.4-2807: A neutron or quark star?

Junwei Yu, Renxin Xu

arxiv:1006.2064 v3 · 2010-06-10 · 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{IEBPRQFZKAYKX55YXWKCFGEPJQ}

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	2026-05-18T02:06:55.082622Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4102f8c0b95030abf7b8bd9422988f4c2c879a7b0134eaffd649b82f9d4614ea

Aliases

arxiv: 1006.2064 · arxiv_version: 1006.2064v3 · doi: 10.48550/arxiv.1006.2064 · pith_short_12: IEBPRQFZKAYK · pith_short_16: IEBPRQFZKAYKX55Y · pith_short_8: IEBPRQFZ

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/IEBPRQFZKAYKX55YXWKCFGEPJQ \
  | 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: 4102f8c0b95030abf7b8bd9422988f4c2c879a7b0134eaffd649b82f9d4614ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "58814613066cdc2520bc0849d8467733837a1f4ff8770a4119d8dffccaffa2fc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2010-06-10T15:30:38Z",
    "title_canon_sha256": "4ebb8896201f9f55ff420f3adcae5955b921dca6d3ff08a45db4e96343f57335"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1006.2064",
    "kind": "arxiv",
    "version": 3
  }
}