Alexandru Ciorba (born December 30, 1968), better by his stage name Sandu Ciorba, is a Romanian singer-songwriter known for his work in the Romanian Romani music genre. His singles "Dalibomba" and "Pe
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 0x79bc1411da49ba5232073b45db20fe47619fd7ca790de83c734604963ab21178. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5e4516d-852d-4c24-871c-693bb802e85a.json and https://artists.proofprofile.net/proofs/artist/c5e4516d-852d-4c24-871c-693bb802e85a.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 0x3c20264b72de24193981802050bf3714029f8b5c083ba199179b4466f69aac98. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRX202397243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde1240d33ce5034a861be0a57ae8f1bbbe3a2eef24b140eed29212438832d4d. 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/FRX282342419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8545abb2da8de7ab337e846e2a1fb003aec4eafa0e686d69ee589b18b4d0c7a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/FR59R2333085.
Ce s-ar bucura lumea (Nunta Alex si Iza)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4a3d6bb834740893bc795d8d61d07f8c1e6fa891059ffef5631cd86ac0c836. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T04:59:55Z), 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/FRX762305399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8dcc162f3c7206eb4c710fea3f0ef14464bb5cce5c3df6b0318bb68f43bbc1a. 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/FR10S2462769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53cff61de67d282f7c9d9f6b6e19cf199b8b14ca900f3c880fcb4b80653ffcc6. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:04:51Z), 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/FR10S2462789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf436e3da2410f6a0b1441881362c0b1a7f9534419dfd29d4636babdf7a78c120. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/FR10S2462805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69353d5bfc9bc0ef14cd82df42b395e6007cb3315e5701146ad943ae13f79815. 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/FRX202413157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b3dfa02391551e7a37244231e4ece9ea690577e9ae31c4d67561c255a648e7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DGA072463986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a015491801a681172626660960c6613fc5b4cd9440e42029941929e8ca15e51. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/DGA0T2429783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72b400c69c125bf77ea7a0c05c5bdec033678ba5c523a7f447be2208253d916. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/FR10S2565273.