Marika is a both a given name and surname. As a feminine given name, it is of Hungarian and Greek origin; a diminutive of Maria. Apart from Hungary and Greece, the name is also found in North Macedoni
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 0x23db371b33bcc803961cc1528e8e38d0a3c6388d957acff6effc0314d20a5da6. 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/bd739cc1-b516-45ce-bf6d-f26f813f34a8.json and https://artists.proofprofile.net/proofs/artist/bd739cc1-b516-45ce-bf6d-f26f813f34a8.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 0x3af774c1add57ba42f6a93f10f712d59e26487383c2ece30847ffa0e134c79de. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLC630800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db403578f1f7a14e8df0f81752d78b896025ed57e1340667fbf6d58f476150b. 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/PLC630800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde1639b66234c24def3dab7d172365055f990f14abf80bfa9ee714849cc5c3b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PLC630800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd858aeeeb65d5c7890424dc775601e73904074a96b989efbb5874d4be2245d76. 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/PLC630800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1d0c645f61da2a6208793a17abcc36d8a2833601c777b5a3d48cf36ce0f3ac. 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/PLC630800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b21f2889706bf70df6e2de63f2faaabd6c85b31956eb6c8c308983f75ba428. 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/PLC630800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc50e2032e0dc452d1267c668b222fab812c09be5812ed8937f27c1871e789f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/PLC630800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392012951c1d32762fd9b77744e221e367b98284f1133ce915d6aaccefabcbd3. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/PLC630800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447f26a7895f3fa218511108c68429b432c72f814fbe72549a057858c96f6a1c. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/PLC630800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62da9692b10e992c2549c43a8b5ff09a4e2fd2fa70373ed5c7f67a37c0535bd3. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/PLC630800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d9edf6267af2a942583d1415f4b9c74385304425617af756b137afb897b842. 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/PLC630800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f1981f398b05221aefa6688240fd66cd4d078b72a46d9c47bf05bdec14dabb. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/PLC630800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71bc0e41c8436d850a2567c04ba3eb0ff0919d1c76b6927408bf2cbe3c07e47. 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/PLC630800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139b69ff5abb8c43e1e57752315dd52774ad0d3d999f2a1361337debed95614d. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/PLC630800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf140f4e919ccaf6dcd17f895b97d73d4592da3bb1210fa90b043580e18151ae0. 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/PLC630800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485def90ee17d1f6a49eee7f8ad03db56892aa853af08beb8e8153c6361525ad. 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/PLA551000136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085b38ff35b36d86651a0b5b7ab255b1b8ff05bd20eb38366887686038de1d25. 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/PLA551000142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c0aaa2430cd8f02ee5c0de43341d278c36de717207cc1926dbd72e4263f1ae. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/PLB841200096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa060c6b6cef3d36775991f7e719c07c01ce76deec0c68a0326a0b7c45b47c36. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/PLB841200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3ec081f483a7f104768da1f0e70af41a16ba73e446f634ef533c413cc39a27. 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/PLB841200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8495a4bc733c6bed71b00c35ad7f8d62ea5f5c5d2a62d53208aa2b56f3296b83. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/PLB841300289.
Moje serce 2K18 (Up & Down & Mikołaj Trybulec Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5282146a3efdc175666c7328cddf321cac60962dac49eae8287e91fb6f75225. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/PLO252000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516cc722c12d18c919ef6e04aaad422f13032e79fd0d13fdc4dede7d25ae1a45. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/PLO252000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71d6e860136f83aadf0c5b6f306a9b795e0a5aac24e023110c8af40bd2a9690. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/PLO252000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fabb4157d8f85176925a96a0269b6ec631c01aa11fb53be4d72a9f22d36cf8e. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/PLO252000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a6dcbb012e345cd72958b84d22fb0c839cf9a4ecf959a05f2620e8052506da. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PLO252400002.
Kurtyny – projekt Ogrody Śródmieście (Borys Sawaszkiewicz Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4422790a70aee63c164c4259af4c4902186c63e2e41a73d25be62953082eb9ef. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PLO252400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e929bf64df5c9781429edf48f395c2f359d872e2a4510bdfde1fe0425844fff. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/PLC062230825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f389ec3b9500ae8c870bcec5f3c25a73c611fbd44ea0ad08a63cad973d9db6e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PLC071001036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495846b966741221c6069c154a4df63de6fa461941155bbaf25637784ed07d2b. 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/PLC060800348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90cead0c43eae1e6f80c6e6fb7a8bc3369099faee489d44896e34afc7f570353. 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/PLA391251106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a551b2485cf853289cb677d974d3167225f6e7e6afd89bbb0cb6d6e0c6b63ec. 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/PLC281200027.