Pith Number

pith:R7LQGTOF

pith:2008:R7LQGTOF6W53UEPUA3MGRTZGXD

not attested not anchored not stored refs pending

Resolving the chemistry in the disk of TW Hydrae I. Deuterated species

C. Qi, D.J. Wilner, G.A. Blake, M.R. Hogerheijde, Y. Aikawa

arxiv:0803.2753 v1 · 2008-03-19 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{R7LQGTOF6W53UEPUA3MGRTZGXD}

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	2026-07-04T17:09:53.385395Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8fd7034dc5f5bbba11f406d868cf26b8c2c1a594164027530e36e051634aef13

Aliases

arxiv: 0803.2753 · arxiv_version: 0803.2753v1 · doi: 10.48550/arxiv.0803.2753 · pith_short_12: R7LQGTOF6W53 · pith_short_16: R7LQGTOF6W53UEPU · pith_short_8: R7LQGTOF

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/R7LQGTOF6W53UEPUA3MGRTZGXD \
  | 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: 8fd7034dc5f5bbba11f406d868cf26b8c2c1a594164027530e36e051634aef13

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3e6f3cea4c0224dbf35f62294b268b5904c3842f15ae5e5d4b2776fe1a0c4d99",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-03-19T05:19:25Z",
    "title_canon_sha256": "addade43feb7c17990690763d1c3e59780c0bb924e66cc77452c8a06cb64b45d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0803.2753",
    "kind": "arxiv",
    "version": 1
  }
}