Pith Number

pith:QWTA3HVQ

pith:2014:QWTA3HVQKQ63D5FYB5KT6JUNSG

not attested not anchored not stored refs pending

Full Waveform Inversion for Time-Distance Helioseismology

Jeroen Tromp, Shravan Hanasoge

arxiv:1401.7603 v1 · 2014-01-29 · astro-ph.SR · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QWTA3HVQKQ63D5FYB5KT6JUNSG}

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	2026-05-18T01:44:54.936563Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

85a60d9eb0543db1f4b80f553f268d91b101a3633cdebc15f9e2f46f4ca38223

Aliases

arxiv: 1401.7603 · arxiv_version: 1401.7603v1 · doi: 10.48550/arxiv.1401.7603 · pith_short_12: QWTA3HVQKQ63 · pith_short_16: QWTA3HVQKQ63D5FY · pith_short_8: QWTA3HVQ

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/QWTA3HVQKQ63D5FYB5KT6JUNSG \
  | 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: 85a60d9eb0543db1f4b80f553f268d91b101a3633cdebc15f9e2f46f4ca38223

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a1051f4b1fc52e78ebc86631ea43e9e2894818358f1f2d855eec9f153476c8f8",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2014-01-29T17:33:35Z",
    "title_canon_sha256": "3e01e5137a5d1c9a38909c144718ae10261f386835162fe1656359468d3d7f45"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.7603",
    "kind": "arxiv",
    "version": 1
  }
}