Imptove APIs from the point of multiple chain support and better determinism for blinding

[dr-orlovsky]

No description provided.

[codecov]

Codecov Report

Attention: 83 lines in your changes are missing coverage. Please review.

Comparison is base (569a36a) 48.9% compared to head (482a0dc) 48.0%.

❗ Current head 482a0dc differs from pull request most recent head 4c46acd. Consider uploading reports for the commit 4c46acd to get more accurate results

Files	Patch %	Lines
src/bp.rs	0.0%	46 Missing ⚠️
seals/src/txout/blind.rs	55.6%	20 Missing ⚠️
seals/src/txout/explicit.rs	0.0%	7 Missing ⚠️
dbc/src/anchor.rs	0.0%	6 Missing ⚠️
seals/src/secret.rs	91.7%	2 Missing ⚠️
seals/src/txout/witness.rs	0.0%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##           master     #71     +/-   ##
========================================
- Coverage    48.9%   48.0%   -0.9%     
========================================
  Files          34      36      +2     
  Lines        3136    3144      +8     
========================================
- Hits         1532    1509     -23     
- Misses       1604    1635     +31     

Flag	Coverage Δ
rust	48.0% <41.1%> (-0.9%)	⬇️

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