Pith Number

pith:QU7XP4AF

pith:2011:QU7XP4AFAWCDZRF5BFGEZRGNXQ

not attested not anchored not stored refs pending

Radio observations of Circinus X-1 over a complete orbit at an historically faint epoch

A.K.Tzioumis (ATNF), D.E.Calvelo (Southampton), J.W.Broderick (Southampton), M.E.Bell (Southampton), N.Kawai (Tokyo Tech), R.P.Fender (Southampton)

arxiv:1108.5973 v1 · 2011-08-30 · 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{QU7XP4AFAWCDZRF5BFGEZRGNXQ}

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	2026-05-18T02:00:44.660874Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

853f77f00505843cc4bd094c4cc4cdbc17950f16f9a74fbcd1f2a6db0dfb5fe9

Aliases

arxiv: 1108.5973 · arxiv_version: 1108.5973v1 · doi: 10.48550/arxiv.1108.5973 · pith_short_12: QU7XP4AFAWCD · pith_short_16: QU7XP4AFAWCDZRF5 · pith_short_8: QU7XP4AF

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/QU7XP4AFAWCDZRF5BFGEZRGNXQ \
  | 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: 853f77f00505843cc4bd094c4cc4cdbc17950f16f9a74fbcd1f2a6db0dfb5fe9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "37ebf0cf1a55c9303c2101ac065453261eada0c88390bf270df85fb2b70e4709",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-08-30T14:41:14Z",
    "title_canon_sha256": "1d30f4b8aedec210425e0c9b829995be5780672e1633c9f8d7dac1af0c252f25"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.5973",
    "kind": "arxiv",
    "version": 1
  }
}