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 0x90b0b2f3bf98670b4500ae5b75ba02412dcd43f2c503ed171002a02d229db629. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3d953d2e-535e-41f0-bd6b-169585a3b8c5.json and https://artists.proofprofile.net/proofs/artist/3d953d2e-535e-41f0-bd6b-169585a3b8c5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mi Corazón, Vol. 3. Música de Guatemala para los Latinos
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 0x1a9acbe7866e2ea2666c1ac7bcbb7344445fc61cecd98582ceaf6a15c174a58a. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZES82057824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0736e11af23bbd1edc1774b2f22bd9c537d924f3882b89cecea6919dd055b85. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZES82057826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c42f7b53d0d8b335de2a70475a4ea4c0b0f1392510650018dd350b65b9e21a1. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:48:31Z), 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/QZFZ72181259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956b9f7f6ca838834d3ef290f604787259e89a23c96751bde4f41b62352f6f08. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:00:10Z), 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/PENMS2302147.