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 0x8cc9a2ba11423f365e0e569aab33c5339164bbedef808366ef3dfe6addf2632b. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3a284d65-9455-4ca2-b20b-bf0ed2f93f94.json and https://artists.proofprofile.net/proofs/artist/3a284d65-9455-4ca2-b20b-bf0ed2f93f94.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Body Bag (feat. Datin & Selah the Corner)
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 0x0fd902655bc5fc5cf705e24cdfbb0c58a1e02303a1a80776d2f147976a5a0e5e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:10:20Z), 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/USACX1900319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1629dc688a4e4e071afa3134a95d965eb8fe82116008d72a209680cf1ca1e3. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USACX2300163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3324de629ddb1c740c1dc3c643d45a9ce5914a476f9130fc6d2287112966ddf. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USACX2200813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe198133547c4516e1d1349aa04294bc33aab02ae85433a0647d7f539004545e3. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:58:57Z), 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/USACX2400102.
Essential (feat. Cephas, StefanOtto, J. Carter and Michael Peace)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da6d46d7a49d06d229c40233395b17b9324df7561fb39f7007941cc80617fa3. 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/USACX2000816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb437991a4821071c2c4c8c0bdbe18d54f5b67049e5dbd8967dd2b560dbc4056b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USACX1200297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1b530a7ddfe1b11581a7a3b1775024509af258c4fad5978fc9c73be2ceec03. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCADW1842318.