Tereza Kerndlová (born 6 October 1986 in Brno) is a Czech singer. She rose to fame as a member of the trio Black Milk since 2001. After the trio split in 2005, she started a solo career and released t
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8ae6b0ec847b41dc88a909b3e8d5ae89bdaab5ca7201df6aa6ef7b153ff30b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/694fc61c-49d7-49e2-bc5e-cfcb55212613.json and https://artists.proofprofile.net/proofs/artist/694fc61c-49d7-49e2-bc5e-cfcb55212613.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee931f772ca700e24926aaf0cef7240aff1a4c2335e90de993c2534b06393063. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM70500123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeda945bcb1520ecabadb013c0fdac3a1dffff180ce606996984e942bae40a79. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM70600023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2612d7adada21f3f1edc3b61deba7824c5f4ba59ab207a97200f4aa351994cf3. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM70600025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3479addd4c0cc72a1c90dc703c126b5c50eea1917d461f281d6cc7808722e576. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM70700351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3aa714ada9e154c153ff3adfd1feca75637105b97bec4cf785d54337edd05b4. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM70800670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf01170d09358ffa1cea80e89b455cfba61b5e4b8ae29c0949fb6aa2ac5f048. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM70900028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759aa4fbf6412ab8ca4c2581e82be8e972e71d9096b0b628c8e4157c530090dd. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM70800716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb37591e75a4e2aa1ad73682199860bb535bdd41ed6cce9f946edb99d03af05. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA211000087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0fb423f7f67ec24fb58b5ee3f260f082961392963d560eec46bca7959ad61d. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA211100078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41151c1fb9b1372a6fb54fd1d976fda7586ff4b42c3e30a2503c59a162af9f8f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA211100077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab13a799f5c95e09cf5bd0879aacc346272b64b6ace64b7338260c9e017ec1c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA211100075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8ca193d15cc45f970743aeecbc537f4d7ffcc079bf4918ed26fe899a0c57bd. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA211100082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfcceea908aa20524a6e309e34821f196409660cc1c21049e079cc192e7aa66. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZI341200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50a03c8966e5512d242f28fba1db4de2834d637b55c84cfb5cbb39882450ca7. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM71300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3aa714ada9e154c153ff3adfd1feca75637105b97bec4cf785d54337edd05b4. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM70800670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81caf494b5f63db64dca3c3e227d3a52cc673cc95f1f2bf62627958e3aa1beba. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA231700427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bf8e7403707872ca7e984befbb09dcec19999388b4ec72fae5df95f0d52edf. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA231800224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5625a1c7d895057f9d9ceffe153e2c019f4cfebfa2e80d43c98eebc385d36289. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA231800226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c608cfc26c28e51458fddeda51f43cac4ff34ae262b01adbfbc6acf99d7bac. Chain 2 (Bitcoin): anchored in block 957608 (2026-07-11T21:00:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA231800228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81020f53bfeffcf06498e22d3d02dbfcbcf2cf9d4134b1d6069aac90ee5971fd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SKA011100115.