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 0xab014506e6d5a487be027530f4b34b9910789b3c6964e901e3038b01de3dbe69. 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/9cf99d13-c4d8-438d-8f45-4ed8237782d4.json and https://artists.proofprofile.net/proofs/artist/9cf99d13-c4d8-438d-8f45-4ed8237782d4.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 0xbc5819b09723806e2a71d74172bcda66856bec118ff4f0410ae03387788aeeb0. 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/ARF412000310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036dfed189ec58be5c9aa620f8cdc9efff08f43eb5bfb49a89dc788a6dce6560. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/ARF412400166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8a2d157a371f64a6ffcda753779188133c90bc539301d0d7e3db92178493d8. 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/ARF412400241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee8ea5f8b66a61fc6fac6be225b0cac3b5e2914908ac392893b62a19f1f8105. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARF411300288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc885647b39975517cc1e23539409995e587097458853584ee73f1b3c83fe0af3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ARF412300188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb5e0f75559cbefcecdf27c2c679dca60fb464b4b51b6e082be1fd0aee2c949. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QZES82053760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83516e57b5aa55bd3bf2a8470226b7d991e8c4142a7d9f139c86af813cbe5c59. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZES82053761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070798516f5d4622b2d0a88fcc15110d98c5d247ec4a3a0e158b35c675e70863. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZFYZ2001080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e4968987d60c0dc462ebd21777953c910a0453df38c74fe08a19671a8ebca2. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZES82053762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a773abbc0b0023457960c2ff3e3a799cc6f5e5c1cf10451b3f69b285edb390e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZES82053763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ada83586b5fbd4a2fe80997c7f0747358535e0dd7d0cd43e2398fff6fa448e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZES82053764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7f94bdda09cb30424ba3c1c11308d110bd45e4d863996a2f877f06a6ec66e0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZES82053769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc065fa07828614dec37b7414a3f7121b5baa0fa96b67fd536b41d1a2cd86bb9f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZES82053770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa534a5146b1aa46ae721cea218ad7c4f221a7ecc22e06e0c08647e85ee652478. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZES82053771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520c2ed39425b0ea6a760399a7abf3f48d6aa4cb8e84615d59df3ce4ddb787ab. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZES82053772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070798516f5d4622b2d0a88fcc15110d98c5d247ec4a3a0e158b35c675e70863. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZFYZ2001080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97a8dd77461bb2fb8b6d9a504abe43ac36e8cddc1eacb7e286fa4e19c94209e. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBC5Q1000043.