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 0x14bc8fcdd600dc149983ada9bf4eb55dfd267278810147fdbf83b4c297e1144c. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2646871f-7bfe-4cfb-8403-d9a90417cdca.json and https://artists.proofprofile.net/proofs/artist/2646871f-7bfe-4cfb-8403-d9a90417cdca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Marchas Procesionales de la Semana Santa Zamorana
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 0x10e2bbf4617e3375673b30f9bd6ea246fd549708d6f53495932f176c5c612221. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:01:04Z), 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/ESA011542077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532a5952c69ef085e909b7e2d26e5fe07fa574bab8f6dc527953dc25c0706c14. Chain 2 (Bitcoin): anchored in block 957690 (2026-07-12T10:16:40Z), 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/ESA011542078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298b10aa0dfa4f4b37fc835e1f18ad9443b2861cf0791ffb33cdb4cb32aebdbb. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/ESA011542079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90dfb74628a4b55dcbe1c6be7f284b4766499dc5ee24fd99501eae05f27d037. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ESA011542080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f0c82a2dc9ce07a4c342a9b391b4f1f37f553a60161e4f88e1aa275980860f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ESA011542084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f522a08791ccd15d05e05ac716550e2fc1e8b29474eb1c8a55a6e5d23f8596. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ESA011542086.