Bnkr44 ( and stylized as bnkr44) is an Italian musical collective formed in Empoli in 2019. History Bnkr44 formed as a collective of six in Empoli, a town in Tuscany, on 4 April 2019. Their name i
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 0x422cab4115e0a1453e5a3064896ee29738ea10428e6970a5e85721e17b8f517d. 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/a27f7a84-7532-405f-b46e-ab02193f7ddc.json and https://artists.proofprofile.net/proofs/artist/a27f7a84-7532-405f-b46e-ab02193f7ddc.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 0x934e1e5beaab922754c37992a8975ed1be76e806a3b7615fbff64aab9ecd2410. 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/NLRD52017987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3a079381bf80bf127eb22ba7766876827a444ed404d18ab47365c6e15efc2a. 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/NLRD52017016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aae0c7d2fdfeb0e9e9ae690039dc5ecd9d94560adf3b002a1585ac8d5673783. 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/NLRD52010191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e6b89d140c04b03f3f167c304dbeaefd8337b9199ecf53db4d2a62c545c250. 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/NLRD52010192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59338fb447b587b32f6fff8dea86447c5b4311898e45e284ea376215c1f2e4ab. 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/NLRD52010193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9786d0097641aaf168393f30e9f81c3a9ead40a947eddf1cac111a137bdd2f86. 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/NLRD52010194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622d25f80d782167169a9985869f29587ed266fac8072997e44fe6700fe6a356. 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/NLRD52010195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c07a41cd5b2bc6e7fbe874792b803745a528baa213bfd028eb03d97e1ddf199. 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/NLRD52010196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429c4202fe24a5b4b53a5997bd31e8d41715d20216701d2248e402bc46c8eb2b. 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/NLRD52010197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1748b147af9a8351179272cbec560ffa3709f97d5888f2ab4e46521d961e6f60. 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/NLRD52010198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa8e708f1a83ef4cd204a5914b8c11c27189f2a91e3bb150d470f130739fcfc. 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/NLRD52010199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62f1f4573f1457530b39080c0222d9f9da2f22ee92c603722db638ebe72305e. 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/NLRD52017014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1bd57a9838b6836c6230d8414d02a2b2dc120b6fcc5e347700314e7b1d5628. 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/NLRD52017015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b698dfa96ec5916ed07a2f44eba7ad64225709813b6712c2c24b3c301117d15. 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/ITLGE2100098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a42f32fa2cbe7ef76a5ef4c6deeafbd983f3f646cedcb80a12dcfb5bd21aa5. 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/ITLGE2100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbf6734281e5d1ccd9ea43ac446f7402372f499014635ebe036b8c8f27390c8. 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/ITLGE2100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a8890cad5e21e84a42e01b85d741d0bced2a0dfcb66ebb526c93c28cdc62a4. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ITLGE2100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750f668c0652094c270fd441509e7a96eb7265ce6acbf51be466c55de2b2b944. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ITLGE2500081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b93b635425e43ac70cb5c721d341e6da487388f63296071cdea299f11ce077b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITB002200373.
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 0x1a62abdb990af7462dfbc93e420d345787b350e6303f8502ff8a68631186b486. 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/ITNIE2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc770fe1287e9631c75439f5dc167dd47149bf2ff76266ca02738d94798f3432e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITZ042400061.
Diavolo (con Ghali, Rkomi, Tedua & bnkr44)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9bf668226abcf287b3389d0f5698441597f87c17e6101e32261cd5aadecc91. 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/ITUM72201091.
Così Non Va (con Madame, Rkomi, bnkr44, Gaia & Elisa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae681173c970581cb8cc904037ccf2b5a5b339fff4d8b851a0d8acbc67dfe14. 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/ITUM72201081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25d76036a89fc32316f494aecfa22ffb89c318fd15ef5711cacb7c1d24f278e. 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/ITLGE2400028.