Coval is a surname. It is the Romanian form of the surname Kowal/Koval, meaning "forger" or "blacksmith" in Slavic languages. Portuguese surname, typically in the form of "do Coval" literally meaning
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 0x76c48830ac2bfe3ad613689045ba6581c42315ace4762767a6c7449a06664b87. 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/1e0af9aa-2a1c-4f13-94f5-f5ca087b2e3d.json and https://artists.proofprofile.net/proofs/artist/1e0af9aa-2a1c-4f13-94f5-f5ca087b2e3d.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 0xa97286033c5a7bc0d79d6467b30a50b9695ef475122d031e04430e6557706c73. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZL382283732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd908de59898f8ad4f6c489e36931d9c4c5143043a9cabf07e9b0a09154500b74. 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/QZMEV2100519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb157728e8b471765987293293e82abf4bee87e9bc86b1e26a34779d5c9a23bb3. 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/QZNMY2105628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6470760d69602b0c241e1a7360b022e142abc809e7340c4324f37c34f98bd9d7. 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/QZL382283735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd943aa142d0e9429b4b2411c5b1765aeb7d1414ac641d163116c34ecbfa397fe. 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/QZNMX2339037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc88a0a87166c8f326f5736304d812cbd2816245b969a206000ee2fa664f06d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:37:26Z), 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/GBMA22473698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f012e4ceaa4f697163be714e22479d4ee7cdb7795b40bed300c33d035c02e5. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GX53U2337846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6dc7407f9a193a2c055d7a3cbb4dfee2795511711c7d19ddba48b7d07416150. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GX53U2452954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f012e4ceaa4f697163be714e22479d4ee7cdb7795b40bed300c33d035c02e5. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GX53U2337846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246c90971fa5d3fd8ec822ff85641ba6d89a3ad3b40d90ab25db09abe5fadf03. 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/QZLL92406465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f8c68021a291e4440837e3925b5dd0a899e01eeda97bcd79e7fc44dc5496a0. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZNMY2372527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749ab45dcf159f38f231e67e3b8ff24736fbde875436e6e60d7fb954eb94a240. 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/ILTON2510603.