JAV or Jav may refer to: Places Ilulissat Airport (IATA airport code JAV), Greenland Jebel Ali Village, a neighbourhood in Dubai, UAE People Javier (name), diminutive "Jav" Sándor Jávorka (1883–
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 0x00288afd125b1dc3a2c5ee0469ac8115c88484ff95cb192bfcf307633dc3a5b0. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/efca59d2-ae54-4101-b19a-adae6ab4600e.json and https://artists.proofprofile.net/proofs/artist/efca59d2-ae54-4101-b19a-adae6ab4600e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pieniądz w samarkach (feat. TPS, Jav, Dobo ZDR, Murzyn, Akin)
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 0xc0b6253d3b46475287938001acb636f07d97d580ea2f9add08217b9e685b9822. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLF241705759.
Tromfa bije moja karta (feat. TPS, Jav, Wieszak, Murzyn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e170f8095757a20844492e36da65f867ce9792fa7c18cba87449cca3e3e2875. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PLF241705767.