Pith Number

pith:S4DANYNW

pith:2011:S4DANYNWDOSOBPBQ5DL6XDATKQ

not attested not anchored not stored refs pending

High Resolution Optical Spectra of HBC 722 after Outburst

Byeong-Cheol Lee, Hwankyung Sung, Hyun-Il Sung, Jeong-Eun Lee, Joel D. Green, Sang-Gak Lee, Wonseok Kang, Young-Beom Jeon

arxiv:1104.0540 v1 · 2011-04-04 · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{S4DANYNWDOSOBPBQ5DL6XDATKQ}

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	2026-05-18T00:52:42.270865Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

970606e1b61ba4e0bc30e8d7eb8c1354092bdbce6effde86584bbe562a488e5f

Aliases

arxiv: 1104.0540 · arxiv_version: 1104.0540v1 · doi: 10.48550/arxiv.1104.0540 · pith_short_12: S4DANYNWDOSO · pith_short_16: S4DANYNWDOSOBPBQ · pith_short_8: S4DANYNW

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/S4DANYNWDOSOBPBQ5DL6XDATKQ \
  | 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: 970606e1b61ba4e0bc30e8d7eb8c1354092bdbce6effde86584bbe562a488e5f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9390535dd9bf06e3a451e9537f0e81bc9c3e4f7e3a3c171859d47e0eaa01730e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-04-04T12:20:02Z",
    "title_canon_sha256": "e89a5ffaf404a816be54af2504bea73205143c9a0689fc09fca5565ffa45acb5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.0540",
    "kind": "arxiv",
    "version": 1
  }
}