Aleksi Lehikoinen (born November 22, 1993), better known by his stage name Gettomasa, is a Canadian-born Finnish rapper. He won the Finnish battle rap championship in 2012. He released his debut album
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 0xd9669ac3d8d637d8c5082d3b5f15a48239a38828ba162f5a017c1dc998788bbf. 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/2fcdaa80-5fe3-4f0a-bc38-dc7fbf92f73d.json and https://artists.proofprofile.net/proofs/artist/2fcdaa80-5fe3-4f0a-bc38-dc7fbf92f73d.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 0xd78dbeae2ceef1eea97be66b441cda33acc0762f33b6de091cf53a47f3a2b308. 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/FIPEB2300170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87407f02376700405276ce05a6ffcd1bd826b5bf4af5b397b117a48808d94cb1. 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/FIPEB2300173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8494f8151bdd42dbf9539a5204c9f02d0aa337af2126f2b3b4cd7b865591b021. 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/FIPEB2300124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c74485ae3ca86a33e5c24a3b7cb32b6e68ec4fc4cd95b424916113a17e89748. 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/FIPEB2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0169fe6d9883b4f3d863de957ca17d91b31e62b11eadc13685e84ea3ac23f7. 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/FIPEB2100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4313f5f4a7bb0bba3bf858aa1b540e4580401a95f7bac564d247baffbcef3cf. 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/FIWMA2200193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154f64298d8b5ca480e2fadf09750e9b0f18d588b5b7a1c97ea5f4ebda0eff77. 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/FIUM72200205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dfe180326242293fcf3178af92304ed66faccd5f6abe424c933e6e7ed0f209. 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/FIUM72200227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b5108e94fd651dc14f69467cf3c92105f57e0bd32e39e7368c6273c57801c6. 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/FIWMA1700113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4122d48a93713b3120723fa56365d6d228c8f4c79b4a7163eeb8e320ab964107. 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/FIWMA1700117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3cec0e70d2b6d48289156f1ad8cce5c460af7aa0cc275458ffc8d5a3fb9946. 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/FIWMA1700116.
Nenukki (feat. Rekami, Van Hegen, Axel Kala, Riimi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfd3d7f0a696f2399da8c3e9fec4707113be7b30a0f517145d49fa02d7edc24. 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/FIWMA1700118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857c191df0ddbcdbd368e4e1efd3d9ff11b4e750b7b5ac31b6631be6ab7f71ce. 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/FIWMA1700115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37008cfc81df767e7b2a424312bd5b5759cee1cc9e3f049b978e94f638091d71. 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/FIWMA1700114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdb8e325199e89deb602d9afe20cc12a436d0e8cefbb4544d23566bdd888a6b. 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/FIUM72300322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a2945d76a5cf045ae66b35aae037f2ea2cbd6f84c2627e7751a97cc30f3467. 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/FIUM72300160.