Pith Number

pith:2DHZ5U3H

pith:2010:2DHZ5U3HHRCQWAFD4OPPEKOJSM

not attested not anchored not stored refs pending

Spitzer Spectroscopy of the Transition Object TW Hya

Dan M. Watson, David Hollenbach, Ilaria Pascucci, Joan R. Najita, John S. Carr, Luke Keller, Stephen E. Strom, Uma Gorti

arxiv:1002.4623 v1 · 2010-02-24 · astro-ph.SR · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2DHZ5U3HHRCQWAFD4OPPEKOJSM}

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	2026-05-18T02:08:57.117311Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d0cf9ed3673c450b00a3e39ef229c9930779f04652a5baccb375cb6b7726c701

Aliases

arxiv: 1002.4623 · arxiv_version: 1002.4623v1 · doi: 10.48550/arxiv.1002.4623 · pith_short_12: 2DHZ5U3HHRCQ · pith_short_16: 2DHZ5U3HHRCQWAFD · pith_short_8: 2DHZ5U3H

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/2DHZ5U3HHRCQWAFD4OPPEKOJSM \
  | 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: d0cf9ed3673c450b00a3e39ef229c9930779f04652a5baccb375cb6b7726c701

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bd00883722cdbeaf7e377d68b9a618d60c83f4d971d7d5a0bc3a7190ab8ea389",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2010-02-24T21:01:56Z",
    "title_canon_sha256": "ed9f04ee57957c121fcfbacd1afeafd798d8ca3e8203c9ffb35b2ecac75c8ef1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.4623",
    "kind": "arxiv",
    "version": 1
  }
}