Vittorio Cosma (born 11 March 1965) is an Italian pianist, record producer, conductor, and arranger. Life and career Born in Varese, Cosma studied piano at the Milan Conservatory and later jazz pia
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 0x351366f0696c1e9df6d2b9599921a31973ca2c265c33c673511b7331709cf7bc. Chain 2 (Bitcoin): anchored in block 954141 (2026-06-17T21:14:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ffb0651-4ffb-4592-b25b-217c8f03acd7.json and https://artists.proofprofile.net/proofs/artist/7ffb0651-4ffb-4592-b25b-217c8f03acd7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mia madre fa l'attrice (Colonna sonora originale del film)
Digitalife (Colonna sonora originale del film)
Our War (colonna sonora originale del film)
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 0xe83a281ac525342f9949d6107c55d5dd78a2f4d6a2c79f878aca147fde4bb491. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/DEH842000484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb80e74736a6ae3fa2edb3e4797e95aed5b966424080043c6ef3706be8bd3e1. 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/DEH842000492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e42eb60da17a22e9de96fb167af50888752221608a04a140f55a145f6cc50a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEH842000495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7efc9e7e751971b3e3e1c736bc767fe6647bbb5c18ae7e299cbcc0ceadf163a. 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/DEH842000496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9036b4251beb226f7e7f47c91f79355617704fcc6d794517eaa5bd854c36d9. 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/DEH842000501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f891f83e496220c355631f5b25c09f51c375285a421975f7d97afbe284f1a5. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/DEH842000483.
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 0xa814979564a3f744f1a078bb98ac296d57ca78c6fb4b91737bf3736647a1863e. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEH842000485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe737ceed978dd0928b0cec0f1153e7eec8fa37ba39cfd95ef78c0e6abbd805. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEH842000486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f40bffc2ec04571b662aee08c3014e5c0193248177075173e4dd39f7bd924e. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/DEH842000487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4dd9b5f8cb99be4757c151b2bdabce977308316f10360dd83767bc1569f226. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEH842000488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d0a45c99e49d4a10ee52dcad1c87c08db5f031d2c307de1376ceae8091c432. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DEH842000489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794114e9df877f1077c32fc065f7e5adb25cf003a4546f6d01ed07f9d9b3523a. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DEH842000490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb848f5706dd71d48fe89e53129fd5b06d36e82d06025cf89cab8bf27151734a5. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DEH842000491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764b39e1630ffac65fa98907bd4b0c6bcbdd20bc2bb9df949dbafea612159ce1. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEH842000493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb439faf172f68c30ec547ae61d91104d1d27b6eaa4650bd0f592a6aa737ed8. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/DEH842000494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2eba8a5e84078346aa1d4f6a5f9df04791e677bf706f72e08858a8f29260c16. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEH842000497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f4f6e82f053f405a394827ad3cec25370fe485c523a3bb898c91b636f12cd8. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEH842000498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd642fc989499fe7ebe153d5cf05870226421831882f784d68bc10350ad116187. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEH842000499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774cbc8887b1dd282fdb21b7c5b903e767a2b75875601de9c72f8617e0ebe7f8. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/DEH842000500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbaa85648f876cc1aead3373b553039eb8d729aa5cc714b71bce23c244675ca. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEH842000502.