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 0xd68412a5fbdfc7d1f8ee3c78268b6620a7de5862ef59caa80e9a2408767e88d8. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/60976bc8-4b47-4653-bfdc-25ccc522c9c0.json and https://artists.proofprofile.net/proofs/artist/60976bc8-4b47-4653-bfdc-25ccc522c9c0.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 0x593883245c400247b5a3d95295fe2e023bf4bf239d52332aea277bf7afb406dc. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:33:22Z), 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/LBA131501177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a30f8506d8a590d41fd0012ecf63d50cbbab182d802c362a12fc28f2f61a451. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/LBA131501054.
Naeim Al Sheikh & Jaafar Mohamad - Aatabat
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b1dbd18b974a26f2117a1643aedb09400b16947ca1f9d99ecb56d9236eafeb. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:11:15Z), 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/LBA131501106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b9224672c5c18aa502f86fb85c163cd0567db97fc8384de81887b060e95f7a. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/LBA131501060.
Mouhawarat Naeim Al Sheikh & Zeina Hamiye
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4f40cc3f75f0f7ae3aa1f5e9faa876b8f60b0615368e0d0982a3c891fc9495. 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/LBA131501127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78962531f5073ecd9628cfe6530aa18b21a06503fad797af8cab40919a2df53. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/LBA131501305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e58e929f67bcccb20fed3fe968e7d29740727371b5971ce3d835aea03cdd505. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/LBA131501306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a4cb261c4889ec7ec7461ffdc517f3c77d1d1255868b51f4227041c49443bf. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/LBA131501308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7631bacf25cfdc234cb8eabd4d4d06e294beb0aec12f904626396864416777e. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/LBA131501311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed9a3a8331aeee3c838d2cbd8b8ec1d7da3bfed09c2bedb64ccb46beb32fb86. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:34:20Z), 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/LBA131501168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694a19d5e48768b5c427381145d749d8ed9fa6b3bc546102aeff6aacac0224b9. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/LBA131501169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd910cfab940991b063d295ab14a8d37d4804f096fcd8832e47345c3820abcbfb. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/LBA132200861.