Massar Egbari is an Egyptian rock band that was officially launched in 2005 from Alexandria, Egypt. The band consists of 5 musicians: Ayman Massoud (keyboards), Hany El Dakkak (guitar and lead vocals)
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 0xca0549403d05f7e337038c671bd6a1cd42956cf5f2d816e74e14719a6b4336b8. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c6ebe9a-4740-4354-8aad-c0cf4fb6f229.json and https://artists.proofprofile.net/proofs/artist/7c6ebe9a-4740-4354-8aad-c0cf4fb6f229.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 0x50bbd8a9235748443971adac4ecfad94f790a2a4c2b6764baa3f766370154077. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:37:16Z), 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/FR2X41579159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59c9e624e4e8760bbeb130b259b308c35de898c685bf6345d6159b5acb65659. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/FR2X41579166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e1f536f769638cf367cfd76090cc58903d7044f9e9f7bae739329841dfe6cd. 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/FR2X41579167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c20e5994581df81e9fd1fb0a1174a211ec289964b0dc2e079daaac96569164c. 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/AEA141304167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa75e6851ddabde4914003030513587029f5b90fb64dcdad378dafcfb44b1223. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AUV401201135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e5cc24ce9f886a035f125b661bcfb582d1ca5656a425c3e9eef90e59f2c4ad. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/AUV401201143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fad22f09e7c9f2897ca4abdd1a9b25cda4a4618b151b1d5349270e8ac62892. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/USCGJ1500452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715eb1f8224d9f44841ec17c33311b4388a99bce96dbd8838b0c6c9b59e77690. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:19:07Z), 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/EGA012500831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca42b4ccc348479177ce654b2ffbb7845ac67a4405d48bbd3b84039b67c78a7e. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:31:52Z), 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/EGA010542111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb002c7cf35a775c9523022599a36595ab1ef23d75dae3257d49e72f2e526844. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/EGA010542093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c50b1336a46301d831de0196344bb429e2fad21fc17c4e1e33423cc4a2895e5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/EGA010542100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e738fd9ef1aa97f4cbbad7717f0c1f67cc29b5ca6f37ee931e4024e042bcfac. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/EGA010542097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc075081c7473799d87c501473ea01497861fd7cee14cb885388b7ae718e9dbdd. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:16:43Z), 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/EGA010542094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34904c3d5ea2668afe3f3831c773304899bdf9f22468c648f4aaa387f5e21e88. 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/EGA010542099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd32df2e32495a6e1ac0ca497bd9db84e358cb6c7bb62c0af6c3c0dce64504c0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/EGA010542103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aae1b3751d9673c6361437ce113c74b743870e20e8c8a228ce79ca8adb6ddc8. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:07:00Z), 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/EGA010542102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0cae216defd465612b871e6b61d0ee03d5152a1362e5dbc24a04e2a4b9edb0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/EGA012500832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39c488377b234da34ed17abbbdd9f3f26fd7a0b2b4fb71cd0b70ed1403b39c6. 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/EGA010542104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7c8ff538f56f323ec92d435e97d49b0ce3d94720adf54f501e8280318d58f6. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:06:03Z), 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/AEA141807029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4682ea6d7cafc055133f3700102606ada6be4f4e7eb800ce615402e2a8849e76. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZFZ71907150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d323764a6263463f6851b8a09650c1432d7ece1832caf4780686517deee0b0c. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:18:42Z), 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/FRX282013700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566e1ada3baf2a9bea0438ed870f81eab65da0616cded8e4461f180b05530114. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FRX282013702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8245acb9b89e3a145eb459ae4f1f2f6d15746e95068991e257e75c58a9762dc8. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/FRX282013703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe1579fa502e299042c875f556c53f52ed5d77795b0ff63a3f1c8a7b23f4f53. 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/FRX282013706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7aaa57d9b7cee7ec57483ca8d1013b02b28f691794ecfcb4f293b311da64ae3. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/FRX282013708.
Kelma ( Intro Of El Harsha El Sabaa Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1e490dcf81793e700ee8102e34834d752e3016cce58f349a65249014e274ab. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/EGA010556593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980e551e543e6f0e27353626b65c8ea8a78ac5e374b27143cb019637260abe07. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:59:40Z), 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/EGA010559875.
Eshret 20 sana - Massar Egbari x City Center
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39def2f286acea337bc23acf6f6a07927883aefd9a607d38fa3c43f30652b94. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/EGA010560314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f14d9e9cc6589f384ae9e054ff20793dec4d3d0846fbea6f500711442255579. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:52:36Z), 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/AEA182400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf66a76f8d1498397f062988762316cf4bf0ad0d82eaa5557e57460561831de1. 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/EGA010564619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b9f92ffa55140985bfead00a85607f32da4c94e95c649b0823a5038db58fa7. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:10:23Z), 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/EGA010564617.