Pith Number

pith:VC5TUXMW

pith:2008:VC5TUXMWO2FSKLMF2T4PF6JKJB

not attested not anchored not stored refs pending

Spectral and temporal variations of the isolated neutron star RX J0720.4-3125: new XMM-Newton observations

C.P. de Vries, F. Haberl, J. Vink, M. Mendez, M.M. Hohle, R. Turolla, S. Zane, V. Hambaryan

arxiv:0810.5319 v5 · 2008-10-29 · 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{VC5TUXMWO2FSKLMF2T4PF6JKJB}

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	2026-05-18T02:15:22.943185Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a8bb3a5d96768b252d85d4f8f2f92a48540ffe72fed4400b9ff42cbecdaad238

Aliases

arxiv: 0810.5319 · arxiv_version: 0810.5319v5 · doi: 10.48550/arxiv.0810.5319 · pith_short_12: VC5TUXMWO2FS · pith_short_16: VC5TUXMWO2FSKLMF · pith_short_8: VC5TUXMW

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/VC5TUXMWO2FSKLMF2T4PF6JKJB \
  | 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: a8bb3a5d96768b252d85d4f8f2f92a48540ffe72fed4400b9ff42cbecdaad238

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "13a0d6ac5768945f183365aacc6e79820afd5e891e1ff57cbf3b73de09769f65",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-10-29T17:55:22Z",
    "title_canon_sha256": "4db370efd9904047581acf04e1b107d8d00389ba3f2a6915233c27a15747dad0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0810.5319",
    "kind": "arxiv",
    "version": 5
  }
}