Pith Number

pith:WFXZF7GO

pith:2007:WFXZF7GO7TZXGTUSDRFKQFBJWS

not attested not anchored not stored refs pending

An X-ray jet in the BL Lac S5 2007+777

(2) NRAO, (3) INAF-Osservatorio Astronomico di Brera), C.C. Cheung (2), D. Donato (1), F. Tavecchio (3), L. Maraschi (3) ((1) NASA GSFC, R. M. Sambruna (1), Stanford

arxiv:0707.1321 v2 · 2007-07-09 · 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{WFXZF7GO7TZXGTUSDRFKQFBJWS}

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	2026-07-04T15:02:41.654880Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b16f92fccefcf3734e921c4aa81429b4ab4b926d34ed875d597566fef76bf050

Aliases

arxiv: 0707.1321 · arxiv_version: 0707.1321v2 · doi: 10.48550/arxiv.0707.1321 · pith_short_12: WFXZF7GO7TZX · pith_short_16: WFXZF7GO7TZXGTUS · pith_short_8: WFXZF7GO

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/WFXZF7GO7TZXGTUSDRFKQFBJWS \
  | 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: b16f92fccefcf3734e921c4aa81429b4ab4b926d34ed875d597566fef76bf050

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "31cf997dcbb205d73ff74c31e2ca8b9b2a50a7bdf2e69a83899785f841cca796",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-07-09T19:26:04Z",
    "title_canon_sha256": "5283e267e2841f08fc362954db969225324e23820a0c30572986f03bff489328"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0707.1321",
    "kind": "arxiv",
    "version": 2
  }
}