Ayoub Zaidane (Arabic: أيوب زيدان; born September 25, 1997), better known by his stage name Zamdane, is a Moroccan rapper and singer who performs primarily in French. Early life Zamdane was born an
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 0xc8ea837f921b10f238ecbb41b854c29d050033ab035d1f1feaff64cca0b46501. 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/724e9f1d-4c72-4857-8781-a5361fedcb85.json and https://artists.proofprofile.net/proofs/artist/724e9f1d-4c72-4857-8781-a5361fedcb85.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 0x34670748bc063f9f7dd525f30532c241aa38e37f49246a5dc8487991ccd5afce. 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/FR9W12323192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32681c90ec430630b7371641ece0562e6cf37541063ca0dd2223be86bcdba61. 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/FR7O52300520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0974d37b27063e603c4675c9dd7f2fc227bb241cfa22b75d30f55605502857. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR9W12435516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd355f2798adbc26fac6236b2dad024eac06988c7e6c91811518d6e736203249. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR9W12142482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34670748bc063f9f7dd525f30532c241aa38e37f49246a5dc8487991ccd5afce. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR9W12323192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32681c90ec430630b7371641ece0562e6cf37541063ca0dd2223be86bcdba61. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR7O52300520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fd685ff7e9868bdc5bc2cc35478fa4de27102d5e6469e7bd4f06f25673a833. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRECK2300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf332953b111df3de15031a67ba2c6e77daac5ba6815c3ada196515fbf2a306bc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR9W12361896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7725dd2ada77271ff7124b932d5eb4c31ef186638055d96ee6ee99e04d58338d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEXC82400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b6e911e588e8bfd47016d7778de63bc17880f885f1ef4efb5464eb70411c5e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR9W12151477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818f09d38594872e79540c97e199b82735b38b32efbac6243b491fc3abaa3c7b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR9W12421718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818f09d38594872e79540c97e199b82735b38b32efbac6243b491fc3abaa3c7b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR9W12421718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77032ab713e9c654a8e8f53e79181b385eb304d6a9213da87dc4c54d3eb43278. 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/FR9W12361890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac49dd5d9cd1b74b5d6973913e0a8530d062aff3e5dd56d9b863de85a32d8fcc. 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/FR9W12134661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac49dd5d9cd1b74b5d6973913e0a8530d062aff3e5dd56d9b863de85a32d8fcc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR9W12134661.