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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b646903938a967e3a08810fa41be1d69303b700e3a742a737bb7a8ec017ecd. 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/112f9d76-2022-4500-a64f-de75cb7abd15.json and https://artists.proofprofile.net/proofs/artist/112f9d76-2022-4500-a64f-de75cb7abd15.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2512bc59e9426ef9fad63788ddd154b0717dcd32a569a9dda453dce7b7aeb88. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USUYG1285085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c519af5b7d7d7202b1a7eae763784cb25dd65041fe81688b860c37e51a492cb. Chain 2 (Bitcoin): anchored in block 957868 (2026-07-13T14:56:55Z), 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/USUYG1285086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96baf9cb2211fb20915c7ca230f8bf446e1a271b18bd7fe159854c5dd82ac42e. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/USUYG1285189.
Ima Mob (feat. Lil Nate The Goer & Lil Jgo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e437bbee26eee9b0c9fa1331a6b7f95f6cbdefbe543922572ad915e1fda68a. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/USUYG1315480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6610eb1020bd97d870c775d607b277329629ca709a2aa7fc7d07b79f9b1df86d. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/USUYG1315487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478852f8447ef22c0347469bb20cb1f0531e115370bdae90e20bd9e62774297a. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USUYG1315492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb843992b8f3ff4da091cfdf13be6e383dc8b5afe2e9ada48b86212af853b25aa. 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/USUYG1326528.
Just Another Day (feat. C-Locs & Jobi-locs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4f006bdfeb70db4e75aadecf35ca14ddcbe36666b403d7338ab08e87484cec. 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/USUYG1326531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6444691eda09f7ec0af2b9a3a4b8ded65e4c8f3f00bc207bed0928f2074d130. 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/USUYG1326535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3f25a7a63360a98f61fdb6fa9382f1bdc433fe651b9589c48d055b9f6049cb. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/USUYG1326543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c599a976c6fbd556fa1905c31a6b2a756b06544f55e75b38b0bc3f4bba142b9. 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/USUYG1362389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed23cb85551bb58ccaf70ffdc896921f2fd8b53b18da575dbfaef230319691e. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/USUYG1392221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85fddd507334bbf9407d56e8f4fe940750f19bd3a58b674cda76f39f71d782f. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USUYG1442655.