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 0xf1a6be0fe6490f4cfbf4a0c69531bbe7a23c9e6c6510c89eff7ed37e25be03cf. 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/1e3d080b-e490-4b2c-870e-3a5af3ae22c4.json and https://artists.proofprofile.net/proofs/artist/1e3d080b-e490-4b2c-870e-3a5af3ae22c4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Amore per te (Weil ich dich liebe) [DJ Mix]
Ich schliess' meine Augen (Price Tunes DJ Mix)
Der Joker meines Lebens (Price Tunes DJ Mix)
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 0xa3debb7573526cf91fe249465a66ed9ac33f141d3c5f78d311bb1add6108b723. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:00:10Z), 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/DEZ922300892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2796fb6048cbc5ba52e92decc4ce3f13527e73f742ef07adaccda4ac53f161f. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T21:00:46Z), 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/DEZ922400272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa099b4b200e7f1030269837645818ba588631b6a3e50dfaae814d167c884bfd. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/DEZ922401793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2796fb6048cbc5ba52e92decc4ce3f13527e73f742ef07adaccda4ac53f161f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEZ922400272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fecf5947dab3185ff48094973d8b2670dcf1a6e7351bf63e7f6a4d29e16d8b4. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:41:37Z), 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/DEZ922501333.