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 0xb938bbc9c95c45a23837e36fc13ceb943871a48d992c4b23e8c69241e3f8aa7a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/31bc1fd4-1e81-4775-8e97-de708ee6c4ba.json and https://artists.proofprofile.net/proofs/artist/31bc1fd4-1e81-4775-8e97-de708ee6c4ba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Much Music More Peace (Black Classical Spirit)
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 0x2763a208062afc8c611aacd41960a41afdaac1cee1127564fdf4c7cd0bb36a80. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEQ022116598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0d540bd8f8fba086341099916f878246a5279780cd6718d756743aeb1ea360. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:10:44Z), 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/DEQ022116601.
SpicyErrorz404 (Raw Expeditious Tape Vol.1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556be00c24c1d0be9880993974cbdf8ab84f217da3f36408a242afbdb175b99a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USANG1924023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e44ad6b1666db5e507edd9f70639f27336ff49dc6f2f1c8bbb79af5dbb46230. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZES62064089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac99bb553fdcfd7ee7d525fa45f35027dfa30526a8f8a3d996c48891ef5ce9b4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USANG2013966.