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 0x1e592c354b3a232dfa49d0aa8da3e9c31c301ef36d67571b2e9d9ac3aeb8a1b5. 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/998f9efb-e517-4a80-90c4-811eb66dbd5a.json and https://artists.proofprofile.net/proofs/artist/998f9efb-e517-4a80-90c4-811eb66dbd5a.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 0x4abc55014c6664b9c1ba71b89684a5b08127dee829300bc88d3a7c7d7633cb7f. 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/AUBEC2004736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e20b3ef1d4bceb92e136d96a03330cab51d4aa63ca64835ff3fa2431010c35. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/AUBEC2004711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36929de5b015b9ee47db49cefae906ea4d2e6a2a900bd711af96953a36aea7a. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/AUBEC2004712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47fb5ec15b554165c19e352f1033828b63d4be355266cf2b47ef6765c0b552fc. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:08:23Z), 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/AUBEC2004716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d2a4d09ed754faeaa8ba78315c6c58c4a222007970c56a709e5a6fb94b70fb. 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/AUBEC2004752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68aee1eae10b452970083296224a5e8dcb3bd10ba8824b9c7e85b3532e7bf011. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/AUBEC2004754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaac9bcabd8a3042e510ccee881dbb87678b3dc6520fa757e27739542835c772. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AUBEC2004761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75418ac7059a4dccf405c700625e66dea132b6a4fa0c86717a0df26a9c791ad8. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/AUBEC2004742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5568de829068e805c6ef528c5fdac0f22289c08e1f0f6cf0c975c7083a176d12. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/AUBEC2004744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530c817b58273688652c7d4654d5e82276daf79eda60cc55187a0cc62039c0d9. 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/AUBEC2004748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a26596d4b3d0470e00992a52b7e159a8b573e2d6ccfbba66a6e03621b91e1d9. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/AUBEC2004751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5584a82aada8e1f37cfd32cef29f9c2be98366a87aa243b874931fec195b7cad. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:59:25Z), 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/AUBEC2004767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d6a158eb3771fedff3faaeca292e73879f60e9f0abe7a03613b923d1a76e60. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:59:15Z), 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/QZNWQ2458649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2dc72f5a166f60b510202ea69114d9311cd329b720ec8ed862f4231e559334d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNWQ2458650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc230f7c901633b03b8c420892e2510190c134e814c1a3b5a242ee691e3667bc5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNWQ2458651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c79d3f3fae655ba79bac3e567c40b356bdadaac204cb993f4f4fc4318f799cc. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZNWQ2458652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f94a146cd740322ac70f41827b1091765d9fc99150ebc7b399be28c84edae4. 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/QZNWQ2458653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24009701cc9da1aac78f4a164a782029d43756bc398fa27722d5bc61ef270146. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZNWQ2458654.