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 0xecf423e4457f74d488ad8f8bff511a2e5f0147491f65bf3de110712b35fce2ab. 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/793be699-0f19-4a7f-85c2-8b931ef0522e.json and https://artists.proofprofile.net/proofs/artist/793be699-0f19-4a7f-85c2-8b931ef0522e.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 0x72b66ce2f3c334adb63427b525ecc4dcc3c524d1c32ecf095670a8ebe53c3cfa. 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/QZ4UU1800097.
Mallah Ya Asmarany, Regaou El Talamza (Live)
Maho Enta Elly Gaybo Le Rohak Ya Alby (Live)
El Hamd Lellah Mouly El Khalk (Mowashah)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b520ac593d384d3bb56fa5f7ad0d9a6314abc7823543b37215c9cd5e592e62e. 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/QZ4UU1800098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6603cc94d23fbaa8a7e2774278d89b1b7173127dff830fd6cbcf5519d668f8. 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/QZ4UU1800060.
Farhaneen / Ana El Adeeb We Entom Adra (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3be0b4cfc681641c802bc96faf3e2c9ecd398a7d4e0f7648fa388613c3c20f4. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZ4UU1800056.
Ya Eskendereya / Ya Bahr Koul Le El Samak (Mawwal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc186250e984d542495e450f99e1b4a575b294748f9b91bd0e8f503ae6c6487a8. 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/QZ4UU1800105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a495de941b80ea79ef4f55e09762fa50d446bc84859c8e113645a26f8fe87f6. 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/EGA001013553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b470270b24ac307aace8fe0413042f7e63f3e946eeaee5e1ea1edb1941d41e. 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/QZ4UU1800163.
Shoufo El Halawa Elly Men Gheir Nar (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0c66b8db4b4d3791cc92ab214de63589279570ca6e806bb1aeed5d83af9271. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/EGA001013617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42090ff111904cb203fecb3796156e14be8a2eab7cc7abba76e5b2f33dae1c1c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/EGA001013598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdfb9be60d58f7fc827df2888709caa496e3ea2fa5c1d80f164a7c6dfda9fd7. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/QZ4UU1800150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f67e38c2ed4d288962d38608504ccf0f5deaa2228b043109967f52ddc179989. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/EGA001013594.
Yaeish Ahl Balady / El Khat Da Khatty (Live)
Shakaa Bakaa / Shayelny We Ashayelak (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116663d2d1b1d1aac7741f38a527bab6f266ac2f42d3598f530c26c4d9496699. 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/QZ4UU1800108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf65fdc146a598242dcfacba9cc6739ffb79a6b98dce3d2b8050a9acd26e008. 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/EGA001013764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bddfb54de407bab8b67bd56d523953eff595cb42393aecaa18c7913adfeb18a. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/EGA001013457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3413ae72821ce6bdded06fb9f76dc349e16ecc331876f060be057c0692e063b3. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/EGA001013632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12258ad6f0f442a46819b795fb9c9fd261104f5a45384e91f81d05052b0b6744. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/EGA001013545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfde57a275d89929d21aee1d5c62086f63bc4f07271cd4ad0730df7f2a4995fd. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/EGA001013734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c74d63a8f0e233159ba7fe8907c90f014592d0e6c1fd269c47b049b46ce6781. 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/AEA141003414.