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 0xa2dd0015c23a92b58f825cd350b750cc2375f0fb227a0435e3e0c778f535d8a0. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a2ada29-d96a-4817-9aba-0a87c3105569.json and https://artists.proofprofile.net/proofs/artist/6a2ada29-d96a-4817-9aba-0a87c3105569.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Herencia de cuatro siglos: la vaquería peninsular y el sarao campechano
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 0x6d24f5202f81b65e85e63a1f064518cd1a81d47f161fa8fccd58fff1c0047058. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:08:48Z), 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/QZPYN2366150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e17baad4b2a7c7185001c84245092178212cbdaa57e24673566623ae358f6b6. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:12:47Z), 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/QZPYN2366184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a2035bed9f162149f20f1fc7d1c01408318cb1c4bc01918b58e0927668b87f. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZPYN2366186.