Pith Number

pith:7U6EWED4

pith:2012:7U6EWED4FCPOCIKHWDQ2JZ7MG3

not attested not anchored not stored refs pending

The continued spectral and temporal evolution of RX J0720.4-3125

Cor P. de Vries, Frank Haberl, Jacco Vink, Mariano M\'endez, Markus M. Hohle, Roberto Turolla, Silvia Zane

arxiv:1203.3708 v1 · 2012-03-16 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7U6EWED4FCPOCIKHWDQ2JZ7MG3}

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	2026-05-18T01:58:06.652463Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd3c4b107c289ee12147b0e1a4e7ec36c178d0dde4aaa780283d419617139a96

Aliases

arxiv: 1203.3708 · arxiv_version: 1203.3708v1 · doi: 10.48550/arxiv.1203.3708 · pith_short_12: 7U6EWED4FCPO · pith_short_16: 7U6EWED4FCPOCIKH · pith_short_8: 7U6EWED4

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/7U6EWED4FCPOCIKHWDQ2JZ7MG3 \
  | 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: fd3c4b107c289ee12147b0e1a4e7ec36c178d0dde4aaa780283d419617139a96

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9002aef0f6875dd54f5c55dab627b1677916f15671e8aa9789c86950bf07b7e9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-03-16T14:02:17Z",
    "title_canon_sha256": "51a2bbbe677f76658a369d4581b4b529e936e4d7974a7191f3a84f064c528878"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.3708",
    "kind": "arxiv",
    "version": 1
  }
}