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update docs with no-pod-id (#403)

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* update docs with no-pod-id

* Update book/src/anchoredkeys.md

Co-authored-by: Ahmad Afuni <root@ahmadafuni.com>

* Update book/src/custompred.md

Co-authored-by: Ahmad Afuni <root@ahmadafuni.com>

* Update book/src/statements.md

Co-authored-by: Ahmad Afuni <root@ahmadafuni.com>

* Update book/src/statements.md

Co-authored-by: Ahmad Afuni <root@ahmadafuni.com>

---------

Co-authored-by: Ahmad Afuni <root@ahmadafuni.com>
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Eduard S. 2025-09-02 13:34:19 +02:00 • committed by GitHub
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42
book/src/simpleexample.md
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@ -23,11 +23,11 @@ The reason is everything the circuit needs to verify that the statement is true.
Example:
```
STATEMENT1 = Equals(oldpod["name"], otherpod["field"])
STATEMENT1 = Equals(olddict["name"], otherdict["field"])
STATEMENT2 = Equals(otherpod["field"], newpod["result"])
STATEMENT2 = Equals(otherdict["field"], newdict["result"])
STATEMENT3 = Equals(oldpod["name"], newpod["result"])
STATEMENT3 = Equals(olddict["name"], newdict["result"])
```
The reasons in human-readable simplified format:
@ -56,7 +56,7 @@ then
Equals(a, c)
```
First, we need to decompose all the anchored keys as (key, origin) pairs. This is the frontend description of the deduction rule.
First, we need to decompose all the anchored keys as (dict, key) pairs. This is the frontend description of the deduction rule.
```
IF
Equals(a_or[a_key], b_or[b_key)
@ -86,18 +86,18 @@ Equals( ?1[?2], ?5[?6] )
```
- Say what the wildcards are
```
?1 -- oldpod
?1 -- olddict
?2 -- "name"
?3 -- otherpod
?3 -- otherdict
...
```
- Substitute the wildcards into the deduction rule
```
IF
Equals( oldpod["name"], ... ) ...
Equals( otherpod["value"])
Equals( olddict["name"], ... ) ...
Equals( otherdict["value"])
THEN
Equals( oldpod["name"] newpod[...] )
Equals( olddict["name"] newdict[...] )
...
```
- Say where to find the previous statements (indices in the list), and check that they are above this one.
@ -111,20 +111,17 @@ Statement2
## Decomposing anchored keys
Sometimes a deduction rule requires different anchored keys to come from the same POD. Here's an example from Ethdos.
Sometimes a deduction rule requires different anchored keys to come from the same dictionary. Here's an example from Ethdos.
The wildcard system handles this very naturally, since origin ID and key are two separate wildcards.
The wildcard system handles this very naturally, since the dict of the anchored key can use its own wildcard.
```
eth_friend(src_or, src_key, dst_or, dst_key) = and<
// there is an attestation pod that's a SIGNATURE POD
ValueOf(?attestation_pod["type"], SIGNATURE)
// the attestation pod is signed by (src_or, src_key)
Equal(?attestation_pod["signer"], ?src_or[?src_key])
// the attestation dict is signed by (src_or, src_key)
SignedBy(?attestation_dict, ?src_or[?src_key])
// that same attestation pod has an "attestation"
Equal(?attestation_pod["attestation"], ?dst_or[?dst_key])
Equal(?attestation_dict["attestation"], ?dst_or[?dst_key])
>
```
@ -132,9 +129,7 @@ In terms of anchored keys, it would be a little more complicated. five anchored
```
AK1 = src
AK2 = dst
AK3 = attestation_pod["type"]
AK4 = attestation_pod["signer"]
AK5 = attestation_pod["attestation"]
AK3 = attestation_dict["attestation"]
```
and we need to force AK3, AK4, AK5 to come from the same origin.
@ -143,11 +138,8 @@ WILDCARD matching takes care of it.
```
eth_friend(?1, ?2, ?3, ?4) = and<
// there is an attestation pod that's a SIGNATURE POD
ValueOf(?5["type"], SIGNATURE)
// the attestation pod is signed by ?src_or[?src_key]
Equal(?5["signer"], ?1[?2])
// the attestation dict is signed by (src_or, src_key)
SignedBy(?5, ?1[?2])
// that same attestation pod has an "attestation"
Equal(?5["attestation"], ?3[?4])