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 0x113111d885b9b2e295ebcc8dc147801e41e544a6a847f5a9af2d7ace141bf2f0. 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/ed18fa86-d596-4012-a805-d27bd0d8d0b4.json and https://artists.proofprofile.net/proofs/artist/ed18fa86-d596-4012-a805-d27bd0d8d0b4.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 0xd4b0326d46b4549bc949848b2f577aeb594fc4d0b1ecaee7cc47f7b750973495. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/EEUL32404106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0edd436ecadd60196b7fff2194542075960f4cbb803300dce27a9dc8b98f4fbf. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/GX3HH2187255.
Puzzle Band & Hamid Hiraad - Best Songs Collection
Puzzle Band - Best Songs Collection, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab4f46f9ef8422840863c30b2d34d7934c8aff59ab54e0e551a54954e45bd17. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/EEUL32207032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2196b428c3c14163d1b610e987a6a8ffd7b4851d7a30be3da11dd4f8f6b0376c. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/EEUL32404104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff7abca5369c75fd797f25e71e82e2467edd9b262be7af5db9fecac8b5dcf93. 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/EEUL32404679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e78d32ca9fbe10c304c482b122e283a5f448cddc98a6c5701098e996894a1a. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/EEUL32404096.
Memorable Podcast 3: Dametam Garm , Dastan , Maghrooro Ashegh , Bebinim Hamo (Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ce16cb89517e52d859da8fb5389493f4b6bfab674d9be0f899df7682af5703. 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/GX3HH2180880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85556b7b35da19c26f9f5e206206a467601804947897b7cb012b701ae8324c1. 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/EEUL32401482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014bc5f29f03364b90481257ff4c5ad06253b13dfefd0b4849bc5f3dce0a4c4e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/DEPI82218821.
Memorable Podcast 4: Hezaro Yek Shab , Sazo Avaz , Kootah Bia , Haris (Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28cdbb35a9237cfe51da7264d2e658fdd6377d2bc7c55351dc03dd5e5c17fd24. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/EEUL32404434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfae7331bbfde4b3b8d9bf5a344c2c952a2fc138f4922d526e7e2153ba786020. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GX3HH2181023.
Memorable Podcast 5: Donyam Shodi Raft , Sunami , Moo Ghermez (Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219cbec8d0f3d4bba1076f522d0550571a816c4166711ef70c2695fad2be0b27. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/FR96X2363322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa11240e85ca1c098f4e66e2e4e24b1b88e2f727b45f0f41ffab8ea167a9b13. 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/EEUL32401471.
Memorable Medley 6: Delkhoshi , Faghat Khodet , Refaghat , Taghsire Mane