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 0x0f8ad42484b3556bb3dfeb23d10eeec5d9b67ddc103ea91fdc555cdf6a389554. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c17d344-94b5-4b51-8dc9-8678ec04fa63.json and https://artists.proofprofile.net/proofs/artist/9c17d344-94b5-4b51-8dc9-8678ec04fa63.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 0x4490b8c37017da360b0cf547c2da3ff991be5bc110525c59abfe4af5f605c509. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/US1SR0414357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81eb3def28866b272eb566f650cb4cfdca6372307526a2fe2a75870d16f4f391. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/US1SR0414359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413ec94168ec70c04859ea6c57e5a9ad6fbcbfc7a3af83f32f35ada11c0a4a13. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/US1SR0414360.
Miami Mass Choir Live at the Adrienne Arsht Center
Lord of Everything (Live) [feat. Danette Inyang]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35cae641bbd453265740b500044ab77771bf9109a103989c6b5fa8733730dce5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QMEU31616686.
That's What He Is (Live) [feat. Betty Wright]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8fcffd8fdf57e06507fcd7e75662cbe0191ca77edc74ac59a266efe077c7e0a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMEU31616688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ce1559f5ccb8081a943ff140967c00f4e84d27fb5e1ad0c627312d4de3bc20. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:08:49Z), 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/QMEU31616699.
We Lift You Up (Live) [feat. Vaughn Henry]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d315335f529d06439497a4acb8b4344460cb2da661e2c6fbc912d1844c366a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QMEU31616700.