Paweł Ryszard Mikołajuw (born 2 December 1978), also known as Popek, Popek Monster and Król Albanii (The King of Albania), is a Polish rapper and professional mixed martial arts fighter. In 2000, tog
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 0xdf2e27012f626a818578e545787934533255b491a3711f97c5249a6a31d3c280. 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/8123f926-d5a3-4069-bde7-3a72a5135e4a.json and https://artists.proofprofile.net/proofs/artist/8123f926-d5a3-4069-bde7-3a72a5135e4a.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 0x8f1186dd2c87d0d4d71b7889976b6c7360bbc1637e5f45dfbd45edc4e2722fa2. 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/USJ3V1222639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2f9ffbc195abe4ccb8628ee536cd588cddd8164019222759bf853ef186644f. 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/USJ3V1222640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a2848051467523f563cf2ccba10c5458d15b03d43ac3861a4a1a1142cb1914. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USJ3V1222642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110ec338223df0a48e107a8d68404d510f41c63d4c8640b465d4686b3dfc49fb. 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/USJ3V1222644.
We Party Hard, We Never Rest - Steel Banglez Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe09920962bc5d5425e1501d4af6a745dc931bf7123fad828760f0c6a155196. 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/USJ3V1222648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45cb6f0b95112c15149fbe720e08664a026a0de1914cb52e64782e929c87c67. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/USJ3V1222649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce049dd0bea645456a9c2fbd63dcd614aa4a94f5afc70e5c27d956623be5d41. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USJ3V1222653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27925fa7d0bc7aa4daa4f3fbec6a5bd5b1137144873d0b96f1cec91413e6037. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/USJ3V1222638.
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 0xadc0c0837379b9879825e5bc4ab914449ec9b32d6bffcc9d085601f9c61ffcdf. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USJ3V1222641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b98cde15d48b83225c13597210f340d54eb83b2f4ff65151c6630d7b1026b2. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USJ3V1222643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572bb3fe082fdfc5adb2d912663fc2e2bad65e1b9703939640fd62a0e8212de9. 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/USJ3V1222645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f0ecc8385da58b73f2af9e758d8331c06e6a9085c3dd529aa140fa1ca7487c. 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/USJ3V1222646.
We Party Hard, We Never Rest - Matheo Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69bdba162548350c305fd5a9736d835f413ed420b1ae1d40b08f2142712aed72. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USJ3V1222647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b00b6016959e7789a1331c1a6b8532ee15c272e4f17f87e4ed214a5e1312f4. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USJ3V1222650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f1c0a325f62e634d75f908b22b14aa7dde650e3e800243980b2aa1b0629d57. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USJ3V1222651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2392d63d16b4503149ff01c84e25a98ca547a597ee2d261eb0ca7ff804dc75da. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USJ3V1222652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cbd22a2eb87bc669a0a53afa78afb7e53d1aba8d766e2660db155a2fc2b5d2. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/USJ3V1222654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888946358e9a03f558085299f2ddaf6ca2d96df5e11ff37e3e3776c560a16889. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLS282100089.
Zawsze ponad maximum (feat. Popek & Mafatih)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4dd849b8d30ac5873c16f722f77ff93d5a42570e2569e33844b31c6176dc847. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PLF241501656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e0cd4f37fefc55222ee61e9a596ba543226f95e208b0dc5ba6f8df563a6d88. 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/PLF241502189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14e158ec9b2f55cb271b18e64331d202529acf334f70db8724ad741c1921b86. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBWUL2026126.