Alberto Cotta Ramusino (born 8 May 1995), known professionally as Tananai, is an Italian singer-songwriter and record producer. Biography Ramusino was born in Milan. His music career began in 2017,
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 0x71d8793dce93c937c6a3572b785e74c83e314038ed5233ad920c50f2d49f566b. 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/edf01f01-ed54-4179-9b95-7f5699d08629.json and https://artists.proofprofile.net/proofs/artist/edf01f01-ed54-4179-9b95-7f5699d08629.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 0xeca714f64ccb76a600a51b96f4fde8452ed7351d3f649415633a829165ee1ed7. 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/ITUV72100098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfcecde2391a5765dcf091c02de7c4ce73fa88a6dcccb2514669553cfe7027c. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/ITUV72200342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48de2109bc422cb2435d97cbdf3c8e9190f6e89c8a258a1b01ca1bde4a78eeef. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ITQV72400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2142c67285b765f09d63e84ad859722de6ec451cec08131bca698e2976d0d295. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ITQV72400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25767233dced0824336627d15e461f5b687f85e8b88a8fb455d66d2cde417a4. 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/ITB002200500.
Un Altro Mondo (con Tananai & Marracash)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9cb8bed194a015d8d0234a4d729ea978187db59f3cc550b9d4b13f80b1fcf8f. 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/ITUM72300990.
DOMANI TI CHIAMO (feat. Tananai & bnkr44)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941d94dada477f84ab2a249bf1d45d644783f4945b11c92727d3e7c9f5eae2fe. 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/ITB262201350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9bbd53a04b0b447bb089dc8709f30ac60d7fd3123f4c7e85a0a4a99a90673d. 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/ITUM72200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd337b6cbbb8f68cd720fb00e0bb9976437d8d01746180c47fae67bba3fc3c2be. 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/ITRYJ2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f840b9aca3806c8b55f08d01fa13664fca3f4329fff6f1c3d45d8cd8a05f93. 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/ITUM72201494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c814b71dfa4df9731ead1c43704e5c1735fe92bfb6360e5e7f3ca27b5144687. 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/ITUM72300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8401f72659bdeca367da8b7ac27b3e4749b085d4655b7c25217f34e49ab0da72. 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/ITUM72101755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9cb8bed194a015d8d0234a4d729ea978187db59f3cc550b9d4b13f80b1fcf8f. 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/ITUM72300990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25767233dced0824336627d15e461f5b687f85e8b88a8fb455d66d2cde417a4. 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/ITB002200500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983450912642dce86a0d9b85f3bc4648a0506778b5ba15d63d80d25bad8cb7f9. 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/ITB002100653.