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 0x26e88ccb92fcfcc1224531e56a071a3ab492e47f35ff82cbb4e1fc9fd492f8b1. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28a38f95-ddbd-4264-8bc3-6b22a5245701.json and https://artists.proofprofile.net/proofs/artist/28a38f95-ddbd-4264-8bc3-6b22a5245701.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
High School Monsterz (feat. María Escarmiento, Fran Laoren, Delgao, Cma, SUOB, alequi, BLNCO, detunedfreq & cyber666)
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 0xf9a578252df8a85c9f6848223f5a73c451ca9ac3789437f11446648907a6dc18. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/BK4DA2214520.
Torero (feat. alequi, BLNCO, Cma, Delgao, Fran Laoren, María Escarmiento, Shy Kolbe & SUOB)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a97b7528ea0c8c397bdcd692ecbb6ca79d1186cedd8f15b46cd74adbdfec70b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BK4DA2307094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48098a7e22773820ff577034484aca357aec7cc0a175060bef18efcd2f277402. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BK4DA2321242.