Pith Number

pith:I4C6EVLF

pith:2006:I4C6EVLF3OLYYYCK5VYTQETEAF

not attested not anchored not stored refs pending

Spitzer-IRS Observations of FU Orionis Objects

B. Sargent, D. M. Watson, E. Furlan, J. D. Green, L. Hartmann, M. Ibrahimov, N. Calvet, W. J. Forrest

arxiv:astro-ph/0605365 v1 · 2006-05-15 · 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{I4C6EVLF3OLYYYCK5VYTQETEAF}

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	2026-07-04T15:19:02.051724Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4705e25565db978c604aed7138126401545822ae639d070e8137cd04222e77f3

Aliases

arxiv: astro-ph/0605365 · arxiv_version: astro-ph/0605365v1 · doi: 10.48550/arxiv.astro-ph/0605365 · pith_short_12: I4C6EVLF3OLY · pith_short_16: I4C6EVLF3OLYYYCK · pith_short_8: I4C6EVLF

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/I4C6EVLF3OLYYYCK5VYTQETEAF \
  | 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: 4705e25565db978c604aed7138126401545822ae639d070e8137cd04222e77f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f305a82f518e9d5a17d4277a26480eb4b30d3b43306dcce7bbe3d9bc8a53a3db",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-05-15T17:37:09Z",
    "title_canon_sha256": "b6cfc880a313af7bbd02f3515054d358465684c0f004ff74dc2f509811cbd2ac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0605365",
    "kind": "arxiv",
    "version": 1
  }
}