Pith Number

pith:UZBTT6W5

pith:2022:UZBTT6W5LID6VYPOJKZBWUB2C4

not attested not anchored not stored refs pending

Bubble in the Whale: Identifying the Optical Counterparts and Extended Nebula for the Ultraluminous X-ray Sources in NGC 4631

Changxing Zhou, Hua Feng, Jianfeng Wu, Jifeng Liu, Jing Guo, Junfeng Wang, Mouyuan Sun, Ping Zhou, Shan-Shan Weng, Shiwu Zhang, Wei-Min Gu, Zheng Cai

arxiv:2301.00022 v1 · 2022-12-30 · 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{UZBTT6W5LID6VYPOJKZBWUB2C4}

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	2026-07-05T05:59:43.736534Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a64339fadd5a07eae1ee4ab21b503a171f25599e5a6b4357e9eb944324e2217f

Aliases

arxiv: 2301.00022 · arxiv_version: 2301.00022v1 · doi: 10.48550/arxiv.2301.00022 · pith_short_12: UZBTT6W5LID6 · pith_short_16: UZBTT6W5LID6VYPO · pith_short_8: UZBTT6W5

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/UZBTT6W5LID6VYPOJKZBWUB2C4 \
  | 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: a64339fadd5a07eae1ee4ab21b503a171f25599e5a6b4357e9eb944324e2217f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cf7203a1cc6c64176cc827378e6b683347e5e35bf6091dc3499784f35a089de1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2022-12-30T19:00:02Z",
    "title_canon_sha256": "7f915eb1ac9867d3bebc161c7550d50ea9db1e82e6938ad023c40aa9b7dda03f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2301.00022",
    "kind": "arxiv",
    "version": 1
  }
}