Pith Number

pith:5HCPUJJE

pith:2008:5HCPUJJENAIW4WQYYBRWGIVFCH

not attested not anchored not stored refs pending

A Catalog of Background Stars Reddened by Dust in the Taurus Dark Clouds

D. C. B. Whittet, D. M. Watson, J. A. Ives, S. S. Shenoy

arxiv:0801.4050 v1 · 2008-01-26 · 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{5HCPUJJENAIW4WQYYBRWGIVFCH}

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	2026-07-04T15:44:39.976731Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e9c4fa252468116e5a18c0636322a511f9d6c06cdfefb015866c138c87afdb5b

Aliases

arxiv: 0801.4050 · arxiv_version: 0801.4050v1 · doi: 10.48550/arxiv.0801.4050 · pith_short_12: 5HCPUJJENAIW · pith_short_16: 5HCPUJJENAIW4WQY · pith_short_8: 5HCPUJJE

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/5HCPUJJENAIW4WQYYBRWGIVFCH \
  | 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: e9c4fa252468116e5a18c0636322a511f9d6c06cdfefb015866c138c87afdb5b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "debc397dd0596538aeb8fce77ab258e5a1a51defa0d60db8875852d1c4c55ec8",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-01-26T01:20:22Z",
    "title_canon_sha256": "64c23ac700b1a0b8519763c4b4d742b326b2d77d0b2be4b3ee85610c90b51398"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0801.4050",
    "kind": "arxiv",
    "version": 1
  }
}