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 0x938af4503ce682b91c1c0be2c3ed96a58aee54358cb836fdbd17145198c4d939. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/261809de-7472-4f60-8400-6247a9f642d1.json and https://artists.proofprofile.net/proofs/artist/261809de-7472-4f60-8400-6247a9f642d1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Medley: Eu Gosto De Ver O Templo & as Famílias Poderão Ser Eternas
Medley: Pequena Vila De Belém & Tão Humilde Ao Nascer
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 0x0cff0b1f4a06ba935169e217251a030751bf4c466b6f5bd4a38d63598a409a73. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:55:37Z), 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/TCAJA2474902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf56948a84779415019cc6d3b54d53bee92cdbc4b1e6861f99ffa5d601083ad9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:45:25Z), 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/TCAJR2511283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66314c2b5280d19d31508eedcc06061b520e88305c1ab03ed01c39da17f3d0ce. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAIZ2475241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f49118ad01d35d13805db3c7cd2289ca82865c4c03a66b8d7977ba34a5a5bd. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/TCAJR2512559.