Pith Number

pith:OGUVDWCF

pith:2007:OGUVDWCFITLM2UBHO5RQORN6JR

not attested not anchored not stored refs pending

H 21cm emission as a tracer of gas during the evolution from protoplanetary to debris disks

I. Kamp, J.N. Chengalur, W. Freudling

arxiv:astro-ph/0701248 v1 · 2007-01-09 · 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{OGUVDWCFITLM2UBHO5RQORN6JR}

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	2026-05-18T04:29:07.542809Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

71a951d84544d6cd502777630745be4c48b4fb9b518b1e56baefa8609955e89f

Aliases

arxiv: astro-ph/0701248 · arxiv_version: astro-ph/0701248v1 · doi: 10.48550/arxiv.astro-ph/0701248 · pith_short_12: OGUVDWCFITLM · pith_short_16: OGUVDWCFITLM2UBH · pith_short_8: OGUVDWCF

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/OGUVDWCFITLM2UBHO5RQORN6JR \
  | 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: 71a951d84544d6cd502777630745be4c48b4fb9b518b1e56baefa8609955e89f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a903e7db2cf5bdc26444888bbd3b24bb1bbe8b32dca9df93f85cfc84949c9a60",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-01-09T15:15:16Z",
    "title_canon_sha256": "3dbb6083987278503890a1287c6dd012f32d3956f80e91de87ab0142c6ad5559"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0701248",
    "kind": "arxiv",
    "version": 1
  }
}