Dragoș Nechifor (; born 11 August 1981) better known by his stage name Grasu XXL (Fatty XXL), is a Romanian singer, rapper, songwriter and producer. He is one of the founders of Romanian record label
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 0x11b8fe32348b7e5de33f0f0ceec971ca6dff9671aa3538663b27a25dacf000fb. 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/6fe98b54-d9d0-41c5-84f4-a175115ab03f.json and https://artists.proofprofile.net/proofs/artist/6fe98b54-d9d0-41c5-84f4-a175115ab03f.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 0xd4766ba65a245a9776d22c36214e0ee95ba1ed719e27edaebc9f0f42b423dd38. 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/ROCMA0600527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29dc8008f6cacc05597ef0fc8b356131b4b1a74ffb536c1dd23836bbcfde952. 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/ROCMA0600531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d76463f81b2cd1a8468c33ce338dc4d4631ecdec46525b3714e94449418d533. 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/ROCMA0600535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cab72c191c317c5e4305f58182f5df65b31b7561218e4ee74e3ee5f2e9b71c6. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/ROCMA0600536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb99d0878a038590c87d7da81d975553652b9c03cd0e4405be8771aba6cbd68. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ROCMA0600537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a82c472e7c8035868d50c1594af4bb26be9d33e800c226ef6a71e713462a9b. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T00:59:55Z), 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/ROCMA0600538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f48d5b03f2e3b1e33231b471f20d4c8d1d574caaf5fece2ec3d06744c352230. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ROCMA0901878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e131b442fd3ecbae1cd94ecf13615ea2e4a563d2b56d11d934aa5eda848bda. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/ROCMA1002200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974f6d85385a06464c6e0a7b7133e154c92038434c3dcf0d9bb6eae7f29dd364. 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/ROCMA1002201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e3eebcdcd74d8f17f1c64cc223d973d406249b3e10b79a3f83e252e61e3dab. 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/ROCMA1002202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15eb83ffad976a5e720b68d5d3fbaf4a8953fc1bcddb982f879fe5f698723c76. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/ROCMA1002205.
Didaia (TraLaLa) [feat. Maximilian & Spike]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a482c52874fd32337c4ba1ea359e1f0399f15e7c5c61ff8ff026425d658a83. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/ROUM71500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce5f9e85619380ed2979dc3a61717d7b38741ad10d1f7b9c3e9252dced721e6. 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/ROUM71500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c548222a62ed59cfe343a134ca4a4ad0ddfe85cd3e4d10144c14eac8c02d0be. 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/ROUM71500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3206519e16a939a7bb1b5bc9dd610e05cd35e1898900db7094d20d6d22cca0e5. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ROUM71500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09046ea2c605f24c315056e121e4c14ef8c9b778597afd7626e390b8221adc96. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/ROUM71500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8281c8302014f8ec27bc5a09180535a9a0bcb50c22ae7b5dfc6481aedab9505. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/ROUM71500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186f55014926a7b05cf998c49fbac50b61ee7c8e4b21a1bc5314945874545a42. 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/ROUM71800150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4539048ff81f34270401da027ffbd4ff95552208d1cc9d09c900acb1731a3eb1. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ROUM71800156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35890a006b6e0bc1d50d090505f99adb8f760f7d85a2b82bd0b1cfd876290c1. 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/ROUM71800152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b17890b7bdad1991245a8d93daa3345d662cab4ac2a2101a09a3e634cb29d11. 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/ROUM71800158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08831178b27aa1068ce090821ff6c54d44e5b56ed82ebec12fb5804d6e991da6. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ROUM71800160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e16a2f61e4b163b80cbad871974636a85c99974096bd4015c9345fbd0ffa24c. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:37:55Z), 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/ROUM71800153.
Drumul spre succes (Ediție aniversară 10 ani)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a611e3d0dbc2bb8a3a2859e44f84494026c8b5eeae85cf87916928179677b6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ROUM71500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a482c52874fd32337c4ba1ea359e1f0399f15e7c5c61ff8ff026425d658a83. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ROUM71500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cabd3854b304ad6c2ab30c927e3d8c1215012cd9f4beae327ef650c7c2eba1. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/ROUM71500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce5f9e85619380ed2979dc3a61717d7b38741ad10d1f7b9c3e9252dced721e6. 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/ROUM71500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3206519e16a939a7bb1b5bc9dd610e05cd35e1898900db7094d20d6d22cca0e5. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/ROUM71500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c4c1d16acbffb18629ba3bd26a805dc27d45d7d1cf3370705668ff50b00f6d. 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/ROUM71500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09046ea2c605f24c315056e121e4c14ef8c9b778597afd7626e390b8221adc96. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:40:22Z), 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/ROUM71500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5d6ffe3adc2500363790b95014217bc4793d5a47d7ee9b45010f80bbdcc936. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ROUM71500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8281c8302014f8ec27bc5a09180535a9a0bcb50c22ae7b5dfc6481aedab9505. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ROUM71500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5473ba579aa473ba840b883149b50599331cc1d51894c3ff2464679c1eabd4e7. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:02:03Z), 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/ROUM71500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437005939cf61f71b80d7fa9dd2d6597e3e7640f00edadd4fb35d8000b2af225. 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/ROUM71500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2778b86c24ec4fdefb91ea02c3455ec95e7c1df475a1d788d57ca373942678ee. 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/ROCMA1002102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b7e8d90d4436d497984e7a4c18968fd16a07e59d0f046c29a47989dd4e7631. 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/QZHN32312660.
Doina (feat. Satra B.E.n.Z. & Grasu Xxl)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a3911033767188f299358e9595f3d8e77c908181c85ac0e0c38e035b815ac0. 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/TCACO1638748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c2b7e88b814c8a2d99301d4d0eb84b3870fec913b4abacabb00ebf828e34b9. 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/ROGRA2101913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32ff70ba5efa61e8c8b5a51afe7f8c4e7bed3a42e1e48d5cc7169d92af369f6. 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/TCADQ1891807.