Michal Švehla (born 7 February 1987), known as Majself, is a Slovak rapper and musician. He was born in Bratislava, Czechoslovakia. Career Majself won the Vytiahni sov majk television competition of
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c13d52ff4b45f11a01c6f3fb517a70fc40e25efa9cc09328e135c2a0e0ed99. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1bdaf9c8-13d6-4de7-b0b2-66913fbeaafd.json and https://artists.proofprofile.net/proofs/artist/1bdaf9c8-13d6-4de7-b0b2-66913fbeaafd.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f12b6a84d0d17e296b71e0151ce640ba59108ea690bd90421f704922f7272a1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SKG441300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff704f43e60db247bb96c7dd4ba320a68887c44efd7a7583690ba527bf5a7f1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SKG441300108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a87faee278fd3a0b7ef4f206f304a56bc06772a5e5cdf0de7a52479e0f10b8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SKG441300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f53c5b4581fb81e12d61ca6021913326fb6996baf7399c7506c3fbbe02b18e1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SKG441300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f2a33886467b7d71b140b2815602aa0ee2ea06fa2f6060ce7ea73e41a108a8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SKG441300115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac50281a7fbf9d67caaffb0ce3dfa2fa34799866048f2898e434bfb234abf780. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SKG441300117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734a0860f4f87946a953666d325dc3019d2a0a5093e270dd739945655c15740d. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:32:55Z), 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/SKG441300105.
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 0x7c619f26876c94a2245ee73c391c5732015acff6f4dd4f813c1f47bdfbccaa33. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/SKG441300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb652b949b3c90789f7855dd840c73c7a20b1d74b0d051d94937440d3669b7d39. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/SKG441300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bd08e3f884336b5d1365b6d709f03e8521d5607814289b783869d22c9e0bfd. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/SKG441300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a6a312c789ba966fe49eea9e7d767d8dd896212e506273cf8916379448fe3b. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/SKG441300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7c0fc8ec84e00771d8e920ceb1b3534595732e8f32a141a154307a195ebaa1. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/SKG441300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471e18448bdd59e979437d443fc61233fa9727714956366869b5a6f6789a41fc. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/SKG441300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03f908a448a296af107e7adf0d0ef68c9819daa95be16442a296b542c2abc03. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/SKG441300112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65a7cda912289a49a05b5cd1e22335b445c2edcb6b04412bcd6816526b95d2e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/SKG441300118.