BRZ may refer to: Business Revitalization Zone, an area within which businesses pay an additional tax to fund improvements within the district's boundaries Subaru BRZ, a sports car Austrian Federa
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 0x920281ba966c5f3f4c514343e9125982fd0f95681b639d2845e4c8412dd6c119. 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/67bd6784-b32c-4e51-b2d1-6053f457ea95.json and https://artists.proofprofile.net/proofs/artist/67bd6784-b32c-4e51-b2d1-6053f457ea95.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 0x1de5a7a6e57cb5146aa27e9e050ff7c579ea7b55cea39dcca86e3c2b59cd7260. 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/RUA1D2432615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9584207bfd9ea8300f642c19cf739c911f58edf8caabef105750567307c26302. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/RUA1D2479376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0161fa27c05761ce2d4ee05c4703705b947ef11dc3452086f4a8500cb1032aff. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/RUAGT2435540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af4e8b1e68036bbdd4271bc55506cf8aef92765ed3a63feaa160e5b53d3baa1. 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/AEA0Q2482418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e834954e8c413ed5ce384f6db6ab974534a99ce1db140c5a29882c9685191c. 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/AEA2W2512963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe042a9b6f6f1879d394cf2c3228a0c52af4af1bf2c1d9a1559ccb0fd46df041. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AEA2W2533934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1363bad1da325ebeb135da1b59fa31d39e1378d0496557fc8709c7c72cfc8d5d. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/RUAGT2534384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af595c491f16bc1dd155fa5d1fa451bb3777ca22af3cd10a8d2acf234b8bc80. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/RUA1H2525663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd264e78acd67765ed648c9f0fae7a928d668c374e6f79e9cc2b631fbe3ac5b84. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/RUA1H2535940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4df48af364b8c3586a0f2b45396b2e4d887306fb9ac96ff40ccc6e4bb9366f. 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/RUAGT2570180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf1604fe10aba44bf0f734c85486c8f467ed81e2e36ed6ca55ae8a969bc3e39. 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/QZTPX2512416.