222px|thumbnail|Cochi e Renato in 1972 Cochi e Renato are an Italian musical and comedy duo composed of comedians Renato Pozzetto and Cochi Ponzoni. Life and career Ponzoni and Pozzetto were child
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 0xa50940e13b7ed6396f8d557216d1b8b6223537fef97e71979f8388a7e72ade0b. 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/8ed0df4e-c967-4932-a3b5-b1908b556a1e.json and https://artists.proofprofile.net/proofs/artist/8ed0df4e-c967-4932-a3b5-b1908b556a1e.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 0x3150a70cb285be217797eb381d0e83fba5f85ebfc96e0d844a97a5227aed115f. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/ITR007300401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68aa0a574eab1b1cf02bd278247cb885c4800605240e8ee1599144e8a39e1387. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/ITR007300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae7d8e035f438be045d0eef41f5b3bd31f91c5f9a9e395fde8b5f68d5bd7cba. 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/ITR007300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a1a08cb63c27e12121e1ec9bf428e7c9042a73b3dc5cffb78663b58af3d5ac. 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/ITR007300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56bfe38984f6412784b405ca890ef40b4dd8e4a80d83fc50cc5f7e2499a42f9. 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/ITR007300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88c459097c51244c352b36f8fffd0eb6286ea24e763bfd9bd8c87ee97c9c1b3. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/ITZ040700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f73bc27eea8866c176c65f4242b5c4a01a0437bfea7e1551149d826093cb92. 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/ITR007400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68aa0a574eab1b1cf02bd278247cb885c4800605240e8ee1599144e8a39e1387. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/ITR007300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561a8d5e0388a0f66b0ae07ee717eaee292c8c98ab073cabb4884f6c4ea9bd7e. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:30:32Z), 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/ITR007600031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae7d8e035f438be045d0eef41f5b3bd31f91c5f9a9e395fde8b5f68d5bd7cba. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:09:25Z), 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/ITR007300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56bfe38984f6412784b405ca890ef40b4dd8e4a80d83fc50cc5f7e2499a42f9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ITR007300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9563677c7454296b67398b6f673e2684a2e4140e386910b87559f4108878aaf0. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/ITR007800621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf826bdc0ce27cbc50042cd8c70e5421a132e19daf5d45fe441907cb9a6d91d58. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/ITR007500581.
Collection: Cochi & Renato (Il poeta e il contadino & E la vita, la vita)