Macello is a comune (municipality) in the Metropolitan City of Turin in the Italian region Piedmont, located about southwest of Turin. Macello borders the following municipalities: Pinerolo, Buriasc
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 0xb4257bdb726ade06c6f53d39a26a84439af84f0cf8454061bf5e7e4730f223d4. 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/4b08fba1-b421-40f0-bb9c-03a13cc1d14e.json and https://artists.proofprofile.net/proofs/artist/4b08fba1-b421-40f0-bb9c-03a13cc1d14e.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 0x538086419a315195146296eb015caceb889fdb9be26c11665284eaa8ea79a9d7. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAES2085524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e6ddd4ed8741bd64bce69e7cc47654ef9d83e80dacfdbc95ee0d6cfdd08b6b. 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/QZPLR2077628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab7d597961af97cfe7a11c3b68e2895e3a602a0705efb572ae1fba22390c318. 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/ITMDU2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab7d597961af97cfe7a11c3b68e2895e3a602a0705efb572ae1fba22390c318. 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/ITMDU2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc392cc85093c05099c6efb4205fd2e09a12e45d083a7f4cd56f8ea011c76ae. 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/QZK6K2326460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f31b89a384d8428310231d69820b555a00f14c079cdbad5c430dbb142bd91f. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZK6J2337834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6c4116c94bab97a631c0aa13195447384dd1ba32afc726894007e1b01e230b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:33:12Z), 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/QZTAZ2311467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61106e1dfdf0a21336daf7034a37c357a3395ccf6136f3705549b7ac9ac7fb4e. 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/TCAEL1999476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0b99ee83e2c403ab76ec5c8ac8dce81b960dc4889b309e74a1ac59f3b3c31b. 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/ITZRF2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ebe3ab074dc22fd4bb2f3672fa5d89ba5851cc2a30fde6c297130991050814. 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/ITZRF2300094.