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 0x2e920d96e8b5889d596645890ab205be5f7430580d138a1841e72532905055c7. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb6c9090-7cef-47d4-8c97-b152b60a41b3.json and https://artists.proofprofile.net/proofs/artist/fb6c9090-7cef-47d4-8c97-b152b60a41b3.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 0xf3f8ccb812d08e53d5dc022c0626a8db8cb857bf6dc74c4df6e6c7003b53605f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZMEP2336590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05066aa9f32c2ce3b27783266fabab28cfb26f92886fcc451aa8c314afbdd058. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZMEP2336592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc4d74aa0c36fbbde70f9c8ed3e71f42be771a3983ccbc3c6f86cd81af65328. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:38:30Z), 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/QZMEP2336593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b82a57dca796678664d526b00a7263aa97d2700d8ce7d3dc7e0e55808348605. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZMEP2336598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665ec1b27505a10347a3867aad9dd9312229be421397594d7e955bad7479ec0a. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:30:07Z), 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/TCAHG2306180.
(اويه كران ) موسيقى فلكلور عفرين الجزء الثامن
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef50f2feee4f45d25d575e4771ac9e6917fb5a3c0ac2651f0d3b46dc240c90b. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/CACWV2354483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b012188d3674ba873de7ae08f605ccafd57f9d5115541679d26a44760531b6c. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAHF2381637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb19580c4f229732fb233a6854e92d3456397e511cc4d177850e99002046ae6. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAHF2381645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19ab73b9cca26a143fb06e5c13067bd2063affb57674931191c7b58a353efd4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZMEN2390564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31347e64687b2e55987cc38b3daf2d4e21ff1f4dbb39eb8e1019125df9d5d76. 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/TCAHH2337539.