Check a pick's record

Every day at 00:15 (Madrid time) we record every pick published the day before in a fingerprint: a hash tree whose root is sealed in Bitcoin with OpenTimestamps. Anyone can check that a pick existed that day with that content, and whether it was changed or deleted later.

Recorded and unchanged

Recorded on 10/27/2026 at 03:49 PM, included in the fingerprint of 10/27/2026.

Pick: #1021858Paid
Tipster: Pickezz (@Pickezz)
Event: N. Hardt vs J.M. La Serna + Z. Piros vs L. Djere
Selection: Gana J.M. La Serna + Gana un set Z. Piros · @2.14 · stake 3.5
Fingerprint of 10/27/2026: 53dbebf7 237fae83 017c3d59 f752136a 56966e22 f1d25c7d 2d5cda3d 0597d251
Pick leaf: 301918ce 04e856ae c944797d 8cf97318 b2b30671 a7fdb8a0 b800820d 9d60e295Position 301 of 554
Bitcoin seal: Anchored in Bitcoin block 973472. Download the .ots

Inclusion proof (10 steps)

1. right 2bd7083bc2c71b01ad672f43ec10b66735768c07ff4b9e8651b32208f1593a56
2. right e51f23e1166d58e4a93ee5d81d34a1de875b85517d460be0606a62767311e363
3. left 5331b78d0a5cc696c8eaf1952c67e0cccdb8e85300a8ad072aef6aab553dbe20
4. left d73b547058a1f79980c95b510e0f1404968840e7dfbe71e779b4d4a8d058c00f
5. right acd63dfef7803b93faf71a35dcfe3571b047743bfd0f3ca12bf81eb1c3f4e630
6. left 4f8910a9e1a0cb9ca992781ce296729843c67952b207047fe0b1718b946ada61
7. right c185b39a7dfddf8948c3224a326b2f6912910ad82c63dbf9532edaf990329c2d
8. right 7270114a61629d319f0676e9c34be0a393c63c939288db600135964d47849de2
9. left a824855ff445ce3ede74ff70a2223d6d3e10f6d9b1d123ecb748568353b0b773
10. right 7843ff75b6a4f2f479be92e2eab0cc493ca6646a48f6bebc9f64e4a49be02100

Recorded content:

["tipsterland-huella-pick",1,1021858,25782,"2026-10-27T14:49:50Z","N. Hardt vs J.M. La Serna + Z. Piros vs L. Djere","2026-10-27T15:30:00Z","sha256:99678b6b0ea5cd7fb56c88f96790cdc9c03610b9eac6b871b87e6e460c9d7f78","2.14","3.5"]

Selection nonce: 965720ec944ce7e8af1c2263f57e3ec8

How to check without trusting us: the leaf is SHA-256(0x00 + content) and each step SHA-256(0x01 + left + right). If the path reaches the root and the .ots verifies with the official OpenTimestamps client (ots verify), the pick was recorded that day. This proves when it was published and that it wasn't touched; it says nothing about whether the pick is good.