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 0x240dc705c9260687a4cc5c48ef03c52ff571caa0ce1f1e7ab01edeb1d0103ad4. 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/6e629de4-c6cd-4987-9dd7-3bc7e2aca308.json and https://artists.proofprofile.net/proofs/artist/6e629de4-c6cd-4987-9dd7-3bc7e2aca308.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x9ce453f2b62e3a5a1932937f77076141ec3a19207772b1c52964498b4ad319c5. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/GBWUL2017832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedea596c99dc8cd6610f3b185ad865bb6bf5b354703895e0e8edfa70aa24471c. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:00:52Z), 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/GBWUL2017838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b7917c1873ad7ee52fa630c4b8db02b31af358e2f66c45987f1c73d4291b49. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX452181143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c0538cae35e42875504bc8695132de56fb1725d2cc1d96991fbf3e48cdccf2. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/FRX452181151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c145b7d216ce82125ae794c5db4218460162cb9e8aded33b71f250598772e36. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/FRX452181153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb08ba3591e73fe11c9015a9dd6d56b55000721faa7aee26bcc20069a78eb2e5. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:29:57Z), 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/FRX452181155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dc4fce1f7a0ec6914cdc39191022c0a2d3f1ba34e56cfdca611cacbb74961e. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZTV32204136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921c2934256b54d08886fd8d0e423f6b9066d3cacb21d1acccb2ee9d846b234c. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/FR10S2458648.