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 0x576696ba95bf44c9b183f4bfe4a4e02b24894a702b71ada0b4b93a232f8ca0a9. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de2a0e69-2867-4f77-890e-9b4b80b2a264.json and https://artists.proofprofile.net/proofs/artist/de2a0e69-2867-4f77-890e-9b4b80b2a264.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 0x487ebdeb51f1368a6667bbffca19eb4fee9ab8cf3384af2f5072992752f680fa. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:53:12Z), 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/QZNWX2424332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427db27c7af20b5b00a9f76ef4c4ab471d231dbb5694c26bf2e1d3423035fc58. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNWZ2450087.
La Gente Dice Que Soy Un Shows (Guaracha)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a92ea6942bb362a3afcf8898a41a69cb68a61440d05ad8f2c96ad2660433f3. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZZ7N2423343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4182bf2c37e9d920287c6acf07719b8ab739c1f82e63f016b98a3e9175f1480f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:16:32Z), 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/QZZ7T2448481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fda6580427da9bfd294c765207a8bd7bcb90685f8ecca7fa7e9816d53f5babf. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZFZ32529900.