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 0x2f6bb558f2b947f1a91e6fa5468b55ba848f8051f2c4aed41babab36096f410f. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15234f2a-6e17-43e2-9776-90ba48a869b6.json and https://artists.proofprofile.net/proofs/artist/15234f2a-6e17-43e2-9776-90ba48a869b6.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 0x09f402a3dbc46c6f5172bd55dd6bc4501875fe4c0bce63ac6b1276a24d29efc0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SGB502356385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ee11a182ce06eea2a2bf558240b945bf7fd50bbd9f7d59f7827507af4f3153. 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/SGB502356384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969193868b8bd0579acff6713507bdeec775ae454c6e537cf96d69838e4a6cb8. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:00:13Z), 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/SGB502356383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358003f3046df19d35c0379eaa30effb7345dbf0e879652ca7425d970b301f4e. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:10:06Z), 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/SGB502356390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bad2d2b4fb46cab117501b1b72fbe69e23085582aac8b0193e5800302df31d. 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/SGB502356389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a5d2de89e1a5eacb4dedf667a9b0894704c16535f7dc8bd64f9ddeb1b9a63c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T21:43:32Z), 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/SGB502365120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c9573d539014e36c92478e87c3384409cf41f17d0d2d1dec699c12674b868f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:33:29Z), 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/SGB502365111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9561a8f2afcdbc0019fd940a580374792ceda40628bac7ac16ed8fa36d9150. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/SGB502365107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12675c3452400b1a87bcb803007db748e3208aabb5a03b72077b4225ebd7cab. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:37:37Z), 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/SGB502370374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd42ae5b02037808467362cfd8ef105a6ac6d3175c55a3322b172e8fa6efe606. 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/SGB502265288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8cab238d04bd1dbf83419a56fce15068aed935847e9ddc58d16a7b3ac84c7d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:33:22Z), 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/SGB502318560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9f241e3d570b0bfa2c68db45b96bfe528431b3c3f1d1e14b0b116e61580566. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:09:26Z), 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/SGB502105911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4447b827ff3993dd22b7a7f3a9ef2f397d93240c79863d5df9f5db95aef71d4e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SGB502329495.