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 0x6e7dec92669b8d4f416c54b4edc7ac392e8d2d69854a0a11b6b952612f147234. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/737809bc-2520-43ca-aa87-22f725301bc3.json and https://artists.proofprofile.net/proofs/artist/737809bc-2520-43ca-aa87-22f725301bc3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hinos de Louvores a Deus (Instrumental (Vol. I)
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 0xd8adc9b04e2fb172f0e5ea0c97d4f9d1e5ae687656042663e1967de2a5959fbf. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZTAS2372093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f616e06ed72fc29d69bd892b58b34ca066f327d7e1c3fcaf53c69adf595afd. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:55:10Z), 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/QZTAS2372094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373439441437394fff9cd6dfcc6732385a4cc3d7b43217845df17af38388b646. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QZTAS2372095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a1c79f386d29dfe28b58232df773feed3057766ba3a699a021d0288f4e5df5. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZTAS2372097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857b829d2f53863cd12f7f25d78de27fa2dabe92f6faa629b626b2b200460664. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:14:47Z), 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/QZTAS2372099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d4f287fc1cd37b1c161207f569d28ada8f78425ce2b5c7897e5550a1105454. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZTAS2372100.
Hinos de Louvores a Deus (Instrumental Vol. 2)