Lejla may refer to: People Lejla Agolli (born 1950), Albanian composer Lejla Basic (born 1994), Swedish footballer Lejla Hot (born 1986), Serbian pop singer, musician, and songwriter. Lejla Kalamuji
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 0x5a6c529af8c64a5df6ff6b1ada43a13a6eff52c3280da523bf4819c8795e952e. 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/e958fe44-0e89-4cae-a008-dc87f52c8d09.json and https://artists.proofprofile.net/proofs/artist/e958fe44-0e89-4cae-a008-dc87f52c8d09.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 0xf8084fa2793139f17a87d0679edee6e6bbd5b11494132253160ac0d54305cd20. 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/FR2X41702731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1804383ebda3a32da621f5947496ae8fd7198ba0b667c598570f50aac90aefc. 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/FR2X41702733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda885ba2905c25efadb955e77665f250c8a9be62ff4ca39dad3cc3ae16f80d60. 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/FR2X41702737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563a57021232206431a2de80dec434720b8418920fd1cab5350bf3875aaa113f. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/FR2X41702738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cce28e695db052d5338c84c8ea3c8520bfd495700afcc82c917da97e63b0c4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/FRX452143180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f72346349cdaf2d9d54403540758c900ce5b0eb23de275f7e3360c27e7dfaac. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/FRX452143182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c820171025fcb8739def58e7c6728b4e6360634f0fa23851f6623c81afa4689. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FRX452143184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa158216727d9d6c6250801a46a0eb741d5d30a8fa24af3c3f107e7e771b6eb9c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRX452143187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc196cb51925ca5c5af9dfb1bab009edd14326ae4e36ffdfd29be0deacb3a23b3. Chain 2 (Bitcoin): anchored in block 958487 (2026-07-18T03:43:59Z), 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/DGA062203360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c944a63f05366944ce1ea70dbb203f91e79e0ad91bd8e42d1a8eff3e3b16cb6. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/DGA052296087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb546fbfd47e2d589d381a292ab2b63585a9a479d8df6333362f07902ee342eaf. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/DGA052296093.