Barni is a comune (municipality) in the Province of Como in the Lombardy region of Italy. It is located around north of Milan and about northeast of Como. Barni borders the following municipalities
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 0x709af3b9c60f69be68695f113adf272d5897e74f537bdc6cb00c38ea0d3cebaf. 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/d5920563-6123-4bae-b2ec-96d69b37c7fb.json and https://artists.proofprofile.net/proofs/artist/d5920563-6123-4bae-b2ec-96d69b37c7fb.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 0xe2dbe6eaf97226bc9086a38a206928fe05a739c0117e470eb12010e0797ec135. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/QM6MZ2089831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a0658d8f7992f5d9d98480f37ef6860e57f424433c83ee62b5e6967a6a740e. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/QM6MZ2089832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95585e179478e48aced3399e2854dc426ec6a0db989a07cdba76969a96bac274. 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/QM6MZ2089833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8a15c0dd091e05842229e416af62f26487e652131019197bc56a0595e72f1e. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QM6MZ2089835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c98c1b6ebce8da2915384e8e481a7190de499ae0b8078a1fe677c501cb773d. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/QM6MZ2089836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d494d5999ae343d4422609000dc5c0c4b9d035a974dc40d5af0967b47fc5913. 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/QM6MZ2089837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987f0101486641264558e2bb3b0377d2760eb50388b57ec76421f9139ffd9a98. 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/QM6MZ2089838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1414fad84fe1adcc7c6df17f1f615e98ec487799210e5525cdb1caa9698b2c. 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/ESA012039629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657d1e89bad7474cee579b5806705d3ca82f06a4f769cf4908a29dbd61b3936e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/ESA012039634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7316830374679cb4f305efc2a8de35efb89a08bd5f0336fdd9db06f566fe36b. 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/ESA011516676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b0dec6badd5a1608274b61e8f9fe816c5924f367f050d56ee94c2898a658c6. 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/ESA011516677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7c15161632b56f088f3fbe8d9aad2c2aa9e6e6a94b7d1b4c8d563fcc860dda. 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/ESA011516678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed7dcb58b9183ac0fbb2afc1d20c8217321ee9e9625b4a76706f2e512023d1d. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/ESA011516679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe941140a0d16166a516bfc6676e7c27a779cd5b17d513ec326117d53cd81e0a1. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/ESA011516680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74abd537ff86cfae823ee46e47478c7b945db02d59f28e50d2ce0e9f84543ff2. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QM6MZ2010643.