Pith Number

pith:TWQQ2N6A

pith:2009:TWQQ2N6AY322MWTESNKLKKIXO7

not attested not anchored not stored refs pending

Balmer-Dominated Shocks: A Concise Review

Kevin Heng

arxiv:0908.4080 v4 · 2009-08-28 · astro-ph.GA · 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{TWQQ2N6AY322MWTESNKLKKIXO7}

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	2026-05-18T02:12:21.991460Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9da10d37c0c6f5a65a649354b5291777ec70b868754373e727a82b15a02f51ec

Aliases

arxiv: 0908.4080 · arxiv_version: 0908.4080v4 · doi: 10.48550/arxiv.0908.4080 · pith_short_12: TWQQ2N6AY322 · pith_short_16: TWQQ2N6AY322MWTE · pith_short_8: TWQQ2N6A

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/TWQQ2N6AY322MWTESNKLKKIXO7 \
  | 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: 9da10d37c0c6f5a65a649354b5291777ec70b868754373e727a82b15a02f51ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6518e3e2805dbb05146c28f0af0fb370265d4fbd413bad210d76fb11c96be56c",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-08-28T19:14:36Z",
    "title_canon_sha256": "00a0ad43a8c7153e2f30ee05e98db0a60e5a354699fc787d33a1a0f38919d102"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.4080",
    "kind": "arxiv",
    "version": 4
  }
}