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 0x482982a66fdff829051794439ac4582c5b5a5cf827ee08876a7e38b6fd3e4eb5. 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/31c704bf-fadc-4eba-b002-b35eca29ec48.json and https://artists.proofprofile.net/proofs/artist/31c704bf-fadc-4eba-b002-b35eca29ec48.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 0xeb34bc3c973bd743f3d5c45a060ed3e8d0a12f87c41ecccc218e337b347fda7b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAAS1071110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9042b1a314e43d4533dcf7ad3ec5cbd7361dbc71d66da9059c3ef357531b573e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAAS1071642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22c712b13b367e43c3e1ff6b9fb52e82ce602d5a7db4ff8812bbcd557f92242. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAAS1071643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19fa655147d451fe3aba85b0b66ea791e5ade6f73fa36488387a23c052b5fa3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAAS1071647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90448b25d90754ed202a400152c5314ef55bcb4031f2470611bcec09f7d11f0b. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/TCAAS1073142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58969f5f6f1d83f9b97648a23bc536d4630435a26615b00fefbee91dd71d388c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAAS1073144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0d722ab0b9921e8e0da55dd353fe4a253e9105a839f6a792bf63773f70332d. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/TCAAS1073148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896ba32050ac9eed18687b39a4b261cf2ffe7ceae027a260b39c5ce88b9debc6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAAS1073150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826a505d048536a5b4e5b6f879739cee1e2b08bddafbece80148bb3a35f2c0e8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAAS1073425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e5f15693a3acb27981d9dfabd38f42f9c6ede749187c088f9993e95949027a. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/TCAAS1073433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf6fb655d64e9dea64d32d6962e24dcfc3499b58af7fd38bac56485253e6338. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAAS1073378.
K.B.'s Bahamian Hit's, Vol.4 - Rake-N-Scrape Fool
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30a0d570e6a4b0fc871f4d9c91d4767f724fcf122e743035ae44f8728df1926. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USCGJ1165980.
Level Up (feat. Protege, Jordan Sinclair) - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c7356f224f97d23c8061096161a35c2fae497c8f50b9448faf663f22980a6f. 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/TCADN1836942.
U Know Dat We On It (feat. Slimm Calhoun, K.B. & Backbone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5c438128d008d8ff7eb78779d76a8c57900815ffa15564a8175f6836d26a03. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USUYG1194499.
Take Off (feat. Ty Brasel, Canon & K.B.) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb6376a6cf27443e5fc4b16ed577a259b1217389efd2da869e837bcb3ae0b27. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/USUYG1159510.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch