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 0xd08393bfdfb52dee349bed4171b00f8b402e5a9b27c71584fd3d26e383fc2ead. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/84430101-6d0a-44db-b4d4-ff8f3f604b69.json and https://artists.proofprofile.net/proofs/artist/84430101-6d0a-44db-b4d4-ff8f3f604b69.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 0x389c0fada74b84d1fb27bfd17db44f48443df4fb9c292896bbbacf696d3295f7. Chain 2 (Bitcoin): anchored in block 958731 (2026-07-19T12:35:36Z), 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/TCAGG2277203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9d645c502e76c346f7687f4d0a4e52649f37e31c0b7f26c0e108d562e8d68a. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZHN32334232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2e6cb53a3260a2ea7b8bbc056f0f71a1b9a66996082b9d1c903d8d6be75348. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:51:36Z), 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/QZMEQ2305701.
Saturday School with Last Ones (Live at Fox and Locke)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6a134559cacbf95057864927e12e719c0a10c2b8148ada3dd437364808ed21. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/QZFZ72442507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11261abb2e5d63d9b4edc52274bc0af04ca9c16e4673f39f163f35bc5cac100d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:17:57Z), 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/QZNWW2454133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc262abb3b57e849b2d46d97b89c71693926916a54e0b9b6ae9e747da0d17a121. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/QZNWW2454134.