Pith Number

pith:R4QR6DZE

pith:2007:R4QR6DZEJIACZ3AAAZ5O7GOF6L

not attested not anchored not stored refs pending

Lecture notes on the formation and early evolution of planetary systems

Philip J. Armitage

arxiv:astro-ph/0701485 v6 · 2007-01-16 · 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{R4QR6DZEJIACZ3AAAZ5O7GOF6L}

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	2026-05-18T00:50:13.926626Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8f211f0f244a002cec00067aef99c5f2cd907b47c870efc50e23f7625f075847

Aliases

arxiv: astro-ph/0701485 · arxiv_version: astro-ph/0701485v6 · doi: 10.48550/arxiv.astro-ph/0701485 · pith_short_12: R4QR6DZEJIAC · pith_short_16: R4QR6DZEJIACZ3AA · pith_short_8: R4QR6DZE

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/R4QR6DZEJIACZ3AAAZ5O7GOF6L \
  | 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: 8f211f0f244a002cec00067aef99c5f2cd907b47c870efc50e23f7625f075847

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c16dbfe1fe579cf0610281978721fa77c252eb94f5c2a029d4caebf7e9c59fa1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-01-16T23:44:27Z",
    "title_canon_sha256": "dd0f3815971c8962446d3fb2fecdedf34d2dbe18fc5662d8fe4c61e3fbbb4269"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0701485",
    "kind": "arxiv",
    "version": 6
  }
}