Rolla is an Italian surname and also a diminutive for the Toyota Corolla. Rolla may refer to: People Surname Alessandro Rolla (1757–1841), Italian composer, violin and viola virtuoso Antonio Rolla (
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 0x80603bb693fba8bd99ee702075d949dbfbf8b7678048e59fce9053294fb0100f. 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/632ad2f1-2159-4fec-b5f8-bd2bcc5cd0a9.json and https://artists.proofprofile.net/proofs/artist/632ad2f1-2159-4fec-b5f8-bd2bcc5cd0a9.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 0x8008dbadbe82cdd915eb5700ef56d21f12e819d92a5c1cfa32a07ee3043e88b4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AUMTB2200513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e70d26e49492eb5afd13b5dc1d983eff67cf30c3c9f887a55b9421e163c798. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/AUMTB2200514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5bc85cf9593a1f9fca37afe8110af19bab872c08b1922caf811083687d0dd2a. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/AUMTB2200515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547d728fb7ce0058019df9e21f573003c48d60f73ab0561139d69f0d7699248a. 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/AUMTB2200516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5060ab8ac5e231a6f8c1bde75d9e38e157a767c3abb7f10793c37304014bd1. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/USZXT2455355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04806d296d1d77b565cc7a3427b8a98fdcc72b44f3a05b25f004fbcde8ec2d2f. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/USZXT2455192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04806d296d1d77b565cc7a3427b8a98fdcc72b44f3a05b25f004fbcde8ec2d2f. 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/USZXT2455192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5060ab8ac5e231a6f8c1bde75d9e38e157a767c3abb7f10793c37304014bd1. 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/USZXT2455355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8d4eb15bf0d2085f50b8e66c2f444cf74ecaa80762b367ba3d1b2cdb3da140. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/USZXT2455356.