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 0x44c6b11933ef9f9fd098eae7c6e05d8dca6058558b381b8c6f64ae574a896cbd. 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/5c0b62a2-192b-4d41-aaa7-eb4828c43629.json and https://artists.proofprofile.net/proofs/artist/5c0b62a2-192b-4d41-aaa7-eb4828c43629.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 0x30c77ae93a13014559fea4005f11eb5d579ef0c25bf6ae68c1baa142c34a1f70. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/GBLV61729967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a747a6f98b7f4edb2bc534a37aa5057321c1c86776ec87c0f8256485fda057. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/NLLB81800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d4bb93db83cfa4c59b0300dafe8ccaf669483c67089205cfdcb9049c31cc61. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NLLB81800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1eaeffb9229cf3a803486326954d6ba00442828e43ee3ff5652878844b428b. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/NLLB81900036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754075c682843b08a2bc08be9823aa7258266e60290fe36ef04ecd651fd7b550. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/NLLB81900037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1663c33b3473bba48662764c58d97b032b86ae391d60696e3f04f313bbfb4019. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/NLLB82000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d5bf8f77a213baaac7835e09e5f6528653720844445b5b8c3e984b36ded057. 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/NLLB82300074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9edd01b119ea985e12bf3de75e9758d1388955d05a5301703a0689d0a746400. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBLV62317025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe474730fa1369b4cf7b8c30a3194d3791c8466f8d8159e629ef777f37b42ff70. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/NLLB82400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5a1f3b385ad8f4f971fc83e9f2c90c74b27738141293e16df182e20c9afd0f. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/NLLB82400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d4bb93db83cfa4c59b0300dafe8ccaf669483c67089205cfdcb9049c31cc61. 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/NLLB81800038.
Wow Its Mok200 (Mokum Records' 200Th Release Jubilee Album)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d32f54639db6922ee16214a7d6990874d01fa71b6f9b3fbb996c0a96972e96. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLLB81900054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab76572c5c8bd14b0296e350c00883326b5645dd113ccb2ec9796c5e4953a96. 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/NLCK42218092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81cf067a9e8aa8bd2146d13c8973b48f64f6d421d6fb87aeb200a0aebc432c57. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/NLLB82000033.