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 0x33c5135203b384f83a5cdf672c247a2ef11b31a0ca3b3de9964abfb7afa11f04. 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/78f201b2-19e9-45c7-b9c0-1caa2e7e7afd.json and https://artists.proofprofile.net/proofs/artist/78f201b2-19e9-45c7-b9c0-1caa2e7e7afd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lah Ghaleb Machi Ghardi Rani Nriski Fog Jahdi
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 0x6dcb16de2280098c632b519c6bba11bb2bfcbd4a0cb646dd79234373e73799d9. 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/FRX452476246.
Allah hgaleb machi ghardi (Rani Nrski Fo9 DJahdi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3a6ef18e25fee9ac770a0ee9c51a09ed1ae8ad7cdd54f52f278933122b9d35. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/SE5XG2445336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2788eee8a74af5dc72b3152e5a798dc0838e19e13c27b5e11d1a19315387e5eb. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/DGA052482210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809cec0915283e4700a789d6a01be1eb42c1527d506ac9b8e9ccd3bc48639375. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DGA062412536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a45846d30e2d8d42036619781b0ea6a742947fa8d06a3eb863e5794c294eda. 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/FR10S2509383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca031ed4d90ddf1e74832b1acabb3febd8cf0179efd15aa5c210d5fdcf4e049. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX282541586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa538de5eae06daca985d90381f179fbc39e8a7eebd710265984b7b7e73f7539b. 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/DZA102500940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a77c3dbd56644226b41c792af55b77478ce4cb3cfabfaa43b6f136257b9f56. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/DGA052571037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4e5d742ec2d2677441dd74d3bfb926acfc0987057556da3d9325ad45a2231d. 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/DZA102502047.