One shared history

The spoken narration follows an illustrative history through Bitcoin block 10. Download the narration text.

0:00–0:05

Each registrar starts with a public Bitcoin identity. Here is A, in block one.

0:08–0:13

B registers independently in block three. Its own identity remains visible on Bitcoin.

0:16–0:20

Then C joins in block five. These are three independent registrars.

0:24–0:30

They verify the small history through block nine: three registrars, and no D I D operations yet.

0:34–0:37

Alice signs a creation request, called A L one.

0:40–0:42

Provider A is her document service choice.

0:44–0:46

She sends those signed bytes to registrar A.

0:48–0:52

The request is pending. Receiving it has not yet created Alice's identity.

0:54–0:58

Maya also selects A. A registrar can carry requests from many users.

1:00–1:03

Ben sends his creation to B, selecting provider B.

1:05–1:08

Cleo chooses C, and sends her signed creation there.

1:10–1:14

B carries the same signed request. Alice's selected provider stays A.

1:16–1:21

A seals Alice, then Maya, into an ordered batch. It extends completed base nine.

1:24–1:28

B's batch contains Ben, followed by that identical Alice request.

1:30–1:35

C seals Cleo's request. All three batches extend the same completed base.

1:36–1:43

The anchor binds a completed base and a pending batch. Only commitments enter Bitcoin; operation bytes stay in registrar storage.

1:48–1:55

Block ten orders these anchors by transaction position: three, eight, twelve. Inside each batch, its committed order comes next.

1:58–2:04

A retrieves B's and C's full batches. Their original copies remain, with the same Bitcoin positions.

2:06–2:15

B and C obtain the same three batches. These are inputs to verification, not accepted history. Every registrar still reports checked through nine.

2:18–2:21

Check each fetched batch against its Bitcoin commitment.

2:22–2:25

Five occurrences now enter the ordered replay queue.

2:26–2:31

Check Alice's signature and current identity state. Then accept her first creation.

2:32–2:34

Maya's creation passes the same checks.

2:35–2:37

Ben's creation also passes.

2:38–2:40

Authenticated again. Already applied.

2:41–2:43

Cleo's creation passes too.

2:44–2:47

B and C check independently. All three agree through block ten.