Marika Ninou (; born Evangelia Atamian (); 1922 – 23 February 1957) was an Armenian-Greek rebetiko singer. Biography She was born in 1922 aboard the ship Evangelistria, which brought her mother, two
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 0x3de28984320c7fee67a349f245add5e7fbbbfd06dcfbf437d7e2418e636f5748. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc446fb1-40f9-4018-a813-ccac547cdaab.json and https://artists.proofprofile.net/proofs/artist/dc446fb1-40f9-4018-a813-ccac547cdaab.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 0x68fc90234b7550bb49643198f37600a77fca2290ab7eb9d283d9ab380f2447a5. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:48:43Z), 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/GRE015000087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6aa5c0246009c4fd5da8e63975a3ff9bd927b82a76fc74bd86c4b2d6d01ef8. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GRE015100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6cf0891de3d06195aa82812889b785750baba7321e9b9f2df425591e321d4d. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:09:51Z), 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/GRE015400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2674ab822100365d2bdcae5ca48ba88183b79e482fef82171e8ff9a5373666. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GRE015400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026f1131d0839842ee6a99fae0a9fe91baed0a9ed9c4f0e3b7ef6b89eaa67507. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/GRE015100062.
Marika Ninou, The Unique the Best Greek Popular Songs, 1948-1956
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3550ba9410cfd9ea136bb5b8ff8263a38fced652e47d0c975ea444c596e1cc. 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/GRL019400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a82218fab993ed29161495fc3336b840caad360db8562e525b0fdf8c46e71b. 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/GRL019400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee276e24658c933491f521ec61fef0fb39545d5b2085bc149df3f7c43149b9c. 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/GRL019400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d52cf52862c56f2576b7538339c03b6577245922ab6172d66b3834beae2cc2. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/GRL019400022.
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 0x789697054392b9aaabaf15918cb6521f2640ce3d97e912fc3c41b693bc7e9c12. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GRL019400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5195d83d689c02f10e6433e35986c5f6c2b3b26f92f6b21086988875630877e2. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GRL019400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493c96e52285b94f498aefa13d71cf4483d8f6c43cb31b883d633377e867e664. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GRL019400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fff16eab78d1e5f3410664f7757c7685990a06f37c35b84df1edc71e9268166. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USA561365662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc6852f32804838f2d9b403e7584d9ca309be6c6a6f41c42de730a3f6b3058b. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USA371523100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1012839603d862bb1c6a507501c84e45bf5aaf04ec61bb19dbe71501e644d49e. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:04:59Z), 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/USA371523104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21d27898675b815894ab1719dee9e5d60e6b95bd5a6c97cd1ab70a1fd59a32b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USA371523105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4cd2ce787138b1507e6a1e75c09f1440e6ff7afb154d8fcc8bdfe9d4ebd1b4. 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/USA371523106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4cdc0e89d24e41cdde4dedebe10892fa58224cdc397c10d5c115affa43ca18. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T04:53:22Z), 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/USA371523109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89138d90924a7fe0c5409fb17903638bbd562582a9975af42f1a7be97e50ce04. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USA371523113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1446a44f1e114aabdb8dfd964a4f130dc80062a2c86d1828bf46ebbbc7c4137e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USA371523114.
Paixte Bouzoukia (Songs Of Vassilis Tsitsanis 1949 - 1954)
Ta Tragoudia Tis Amerikis (USA Recordings 1955-1956)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fb15a25d67a826c01ecf836adb09bb14d40cc464eda8896cc0a43b2eb2a7a5. 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/GRUM70604465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa282b9ae371e3271a6e39e340ac6a1edfa60d1300cc4cadae19a4d0090cffdab. 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/GRUM70604466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98dc6fdb08dd13ed405beafdc08f9e135282717c44b5869378f589b01586f7b9. 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/GRPO19900350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48437e8c4d1a1c0b66970c9d4a8994befb951ce92b9335c9dde9b3ae43365d54. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GRUM70604467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c64af2e05d5ca3263657838c999d3ddce9bf96dd82563567e3fc135b0cff20. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GRE015200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40faa464751dbf41ea4963b3c1503dec097402c7c81556aa180706a36571c7c3. 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/GRUM70604468.