Travo ( ) is a comune (municipality) in the Province of Piacenza in the Italian region Emilia-Romagna, located about northwest of Bologna and about southwest of Piacenza. It is on the left bank of
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 0x4d250b72b6748f7e25f6e51960e6ce1e75df06beb9c604a8496647eb30e0de87. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11b6ea49-a820-481c-bcc2-0e9a14cfd1d3.json and https://artists.proofprofile.net/proofs/artist/11b6ea49-a820-481c-bcc2-0e9a14cfd1d3.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5312502756fbfcb782b65adb077cae6375106bc423667860e68c9bd525d2a837. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZFYW1930549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662965d68b4ca88c7213b77ac0a281d1f1cac58e2e2e9ab775637b0a8db10b75. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:46:47Z), 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/PT2KL2100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1d7af4c2b22b98f4f0d83647b589ecfdaefd47f25bbdd20b8d292a096d1a70. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/PT2KL2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0777c50ff45f1993317b7ef82e534c4b61d5f560846b748820c36353fc301c1. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/PT2KL2300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2bfbf4bfdd650d3ec60aed9edade2ed14c5a7f2282afbaffd79c17f0126e1d. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:48:47Z), 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/PT2KL2300032.