Nasri Shamseddine (, also spelled Nasri Chamseddine; 27 June 1927 – 18 March 1983) was a Lebanese singer and actor. Biography Shamseddine was born Nasreddine Moustapha Shamesedine () in the village o
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 0x2eea23869e6c3bccd50972fcfea72aebb6755cd496ff8bf514f7147382a41054. 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/fb0701b0-ad6b-4acf-8e71-ad4b51654359.json and https://artists.proofprofile.net/proofs/artist/fb0701b0-ad6b-4acf-8e71-ad4b51654359.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 0xfa3a172644c6727ac456d89100a89154d7b0170339326a43dcef71709ae6ea8e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USJ3V1033183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f383224e3db48b659c1a22ffba9e89fe75a4d7d5859b2ed8a49265225359ee8. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/USJ3V1033187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64e82f4a91a9f4d5f558423cf04513549023ecb4a6f2725be50a5431f959e72. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USJ3V1033194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd426789a49fc5371eb12f08a1cb8d82961db6b64246ae7e7f7e21b8eee59561f. 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/USJ3V1033196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13ecf0f3a3cfd694354c17ab1c8c49becf2fb42886aab81359921f9b28b33e9. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:21:08Z), 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/USJ3V1033197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7f3dd17bd25647003463b97ecde04a0b34c5cdac7e200c14667021573e3dfd. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/FR96X1800822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698e1bb87b4f885d67c1a01930fed33e516beecaf2f34d3dfbe60174b1ce2676. 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/FR96X1800823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80e63cc31955cf883dc170a347549bdc81c803ca88fafcd31bdd6e1107e6e84. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:50:50Z), 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/FR96X1800832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa350582dc005715ffebfe616d6500c367ccdab15fa7cf008bea812ac2ce2a813. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR96X1800834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc146921507a98a72ac5aa720dc43c79f952cc4d941549d613994d17ff26fc2ce. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FR96X1800837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a36f12389e4340cd51cd3c514c2349b753fda7a90b0e07aa7a492fef0a62e4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/EGA001002685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1d7befe871516007b26db53ea206a7e1a0508e05f7a6dff74f552d7d0b2ca9. Chain 2 (Bitcoin): anchored in block 957846 (2026-07-13T10:25:43Z), 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/EGA001002708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecdfce0ed5f607ed156c8d1b4950ac963519d63f9ca19a44754db9657678319. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:51:33Z), 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/EGA001002701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bdf75c273c3e276868c87ac138ac64df79605606421e1ee96f369ff512868f. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/USJ3V1033227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463bf20aac3c0d1642e7781035e2d99b1f172a7b1f61b5f044f83f302e04e9e0. 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/USJ3V1033231.