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 0x0f957c3abb993afae3b6812867705fb0af9c315fc92bcd27369bce8a9fd246a0. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d928713-42bd-4e87-972e-1e935fe77570.json and https://artists.proofprofile.net/proofs/artist/1d928713-42bd-4e87-972e-1e935fe77570.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
TRAPPERZ A Mafia Da Sicilia (Tech House)
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 0xf36e3c4969a7bd4fc18fcef597bac05e11455f69c8efbf0d4af8855bc90519fa. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZNJX2315210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70699b972071b7a473e958c5004f1fc6d8cba27bc62899440604f8023f77ee0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZW9L2349213.
Cuanto Vale Hacer el Amor - Tech House Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2c0c3fb34a316984e7320178a3299841a5cbfc6b133a5305d4cfa9ec58043e. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZW9L2349214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ce39e9777dd050c40df3a4a203bf190d8b0333cbbf022544ec2b996f15dd33. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/USY282306235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9023cd58916468c633b2d7bdf65d8612602a8f45ae789fa10f9bb1edf45eb5ea. 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/USCGH2409063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2531dfce23a6f9997dc1c86dd56359b165ddfb5c869f99941274a62fb02a1154. 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/USCGJ2404744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a84ae775afb321ecd09956c1f5af3b10271f7fe9d7a2fb8a426e2b2c6a2d28. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USHM82435765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a802e64c7454ce04bc7ebc430d01707e2bdefa84fb41000af893a6e328eefb. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/USY242401935.
Seguir Viviendo Sin Tu Amor (House Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8291c6a4d4dc4a3d1811d2fe4b4909452b7f0788b41fe7214f7258d03af9d41c. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USCGH2531083.