Baligh Hamdi ( ; 7 October 1931 – 12 September 1993) was an Egyptian composer who created and composed many hit songs for several singers in the Arab world, especially during the 1960s and 1970s. He c
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 0x4715896de1f486a7f43cc30ce1978b45b9f8b6c1b5e615ed80a3c5a22e302537. Chain 2 (Bitcoin): anchored in block 953602 (2026-06-14T06:58:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f86bb3f-5aa2-40b7-8f9c-2734e957395e.json and https://artists.proofprofile.net/proofs/artist/0f86bb3f-5aa2-40b7-8f9c-2734e957395e.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 0xb2b14d4113ede93907d83059a4ea601c2f5bb7d13669a1c27701dd6b34392cb8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/EGA010559662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eff6f62aa607a502d5813cc98997a2721117bf3eaff319214a400baad56fd8d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/EGA010559673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba2a405da4dd8922163edf637d70e7a608214506e48bb9163c68bbbc3ccb637. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/EGA010559664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1985b0baf6dd15c4836cb6cac5bd46720ab91bef0629561febd7d2ff75d4e9a9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/EGA010559665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23878e12dcdabc69ad2511361b90bd95795df6f01b4a583c852db735b76a6b9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/EGA010559678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2283c57a45c9d507ec2eb0e43ce3015e52e528922e8252a1d03fbdd7ed4afd79. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/EGA019001536.
Indo-Arabic Variations (feat. Magid Khan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee32d4d366d226971b7a445fee0181324d98ba2b3e240f3d8a6aebed73193fc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/EGA010559660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35adf4a1aeef2bc75627474ceec8544658c92aad740397fe40dc9024772304c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/EGA010559676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb00b4f722f6b54b63a0cd95c4800838c1494e20aed9d4f9bb9d7a4370605a5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/EGA010559669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9760dec30f5fd6ff4b9e88528870d110e230ca0427734f3100019bc92019cc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/EGA010559675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef4725b6e027d6c2648df846705c2b03d7e21e93b0d665a8c38363451386954. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/EGA010559674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e46092ac81580b0bcc04e9bed21bcc124eaa62de690d00c12bd9a923942671. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/EGA010559666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3269b0d8bf7e884872e869733f17fb35ac15ee4d17e4ce247db45ac80ab01b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/IDB772100143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0739ca2077409c5b0d531bcd1a80d272ac57a2f1b3d73e6406ba2e15e4e95a2d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/EGA020500594.