Nesma may refer to: Nesma Airlines, Egyptian airline and subsidiary People Angelli Nesma Medina (fl. 1978–present), Mexican producer Nesma Idris (born 1970), Egyptian short story writer Nesma M
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 0xb69d5b1692ca054ebac67ec626892279ed81f6a14f03852146f5080159a5aad0. 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/58486753-f562-4add-8645-3ed8f75aa54f.json and https://artists.proofprofile.net/proofs/artist/58486753-f562-4add-8645-3ed8f75aa54f.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 0x59261c642bc359d38b61d098553106116937ddbc3c8cd8f072b51a7f93c5f1fe. 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/ES8390500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fd32ffd059e3598cc2f720564d983bff7085752589521a524846e16bad3eed. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/ES8390500016.
Del Nilo Al Guadalquivir (Oriental Dance Music Volume 2)
Memories of Cairo (Oriental Dance Music Volume 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7497cb1bcfd61e506d6197528c5ad078fa303ad89010e041d82c39eda365a701. 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/ES8390600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b05e7aaa450cdf1fe44a698da401970b8a152f3d2d19bd553851cbdb687a14f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ES8390600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7188c504c46437ca99756212b7634cc89802823c5ee2d9247900be1b8ead7d72. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/ES8390600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af3f0d77ed6a8779ac17239dbce4414c492e5be9991c01b276019b026f1132f. 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/ES8390600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1172aee3c1ce1ea1b0da3089d790f44c33829b408fe8199b53cdd30f24ffd3a. Chain 2 (Bitcoin): anchored in block 957661 (2026-07-12T05:37:10Z), 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/ES8390600012.
The 7 Veils Dance (Magic Dances Volume 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd5b1b49f31df79318322350b3f5cf6b8a8f487b25ad426de3cf242076c7b3a. 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/ES8390600060.
El Nasseem (Oriental Dance Music Volume 3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606fc77aeaac0a7300870fe6bea2c1b79834255e036750f7ef1805a21cf5a557. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ES8390600075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195af5add6b12d0158630b22c279b59a42ef3313c2ce0fcf87a196241f9a4745. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ES8390600076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fadfd102ca240141c0cc1ac517c7cfcdfb07120f4c0fe2a64873b11b739712. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES8390600077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb0a4d80451d85a7c818f9b8036b0c3570825bf3f7ac2b9de094a5f1207e7e9. 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/ES8390600085.
Enta Omri : a Homage to Umm Kalthoum (Oriental Dance Music), Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c90eb273cd59366102a6328b53b3513fb9aa0bc7081ae0cd9a9d77edde0e29. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ES8391700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abf673a636d4775cf31e9936e5782bcebb380408ea02c4de6d6b0a5b19d69d2. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ES8391700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c197eae927b7299282bbc1f591703f0ef2ea4a4f90844fefb9526cd50546e7. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/ES8391700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138146fa1a9865354357c46fe85585aaa8876b27b9bb6d17e2a586f95d4d1465. 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/ES8391700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aed63b5f06cc781fe822bb195762088ce10aab32b5235dfde660a22f20023b3. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/ES8391700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cfa1fbe5681bc9020697e76d2accb74a0cb4c0d71303bd2743dc4b3cf82f86. 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/ES8391700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd8e9eccd1ad6ae4e01f0b34c879f09570e7568a4cdf99a5a3e7b0744a7b560. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/ES8391700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d34d48512ef48948772ae82c05852dc496f88f50a957e8821ede856e4379c24. 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/ES8391700016.