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 0x99134cd0a940a8f6fd3bb1aecd62d1f91b5f9806fb1b94df6245d334fe43dd0c. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06d085a8-cd65-438f-bf2d-22e25e33649d.json and https://artists.proofprofile.net/proofs/artist/06d085a8-cd65-438f-bf2d-22e25e33649d.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 0x48e365875e9db18b659d2c1c0767876761b36b6079d954a1857c889c7127babe. 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/USDY42522194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d081458851701f74a9ad3040fe1de6d1d5035c350e3066f9d54f8636582c9b. 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/USDY42522196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042b7c3d1707b328ad80236a0dd366a0b83439af8b8d1d12381ff085949dd470. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USDY42522197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94db7c596f4352f23595c65ad810914773d3e0ac84a5327de470c460bdb96092. 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/USDY42522198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd10e6f5f7c4ef14e1e7b6cfcba6bb7d5ee68638a5d97eedf0865136263245d. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USDY42522199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4be86b7785d5c8a5f596abf754b86c756a449c8117e68303baaa1c14281c055. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:48:22Z), 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/USDY42522200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1d7bdd81250742b43ac744a2e0ff77089ddc256abed8883d2cdbe19e7619f0. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USDY42522201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a80dc216e7e50e5923fce32ac850facf92ddc1bf9960a6465f5b19c9ea52d31. 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/USDY42522202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a2dfe250c93b39c99621497f0d93946966f7552b98b0da0e969cf97f840be9. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:52:38Z), 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/USDY42522204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7615a0bfceab4e1b79b236bb382de698d0de49ba93c35eb71965da6fc69b11cf. 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/USDY42522205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8432b8e3a2f5773062733c8fd3bd619bbd0c7423d265785f90d519ee9b086ae. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USDY42522206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411fd432d9d70834673df3a9ae777417d52c5b6fd494bd622efe9f29313506c8. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USDY42522208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c0c14f8b19eca225374cbbfe5ba025fef166dfb61c3f1bb5b81c4412388cf5. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USDY42522210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457054872aaba1ad1575f2b5d9381e525e6fff223e1a91ec3c0d9fc869f6dd4a. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:06:23Z), 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/USDY42522211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe88b0b7abd51d234b56438f4b93fe4c92e9d99ba4a55a7a457c4cc0087fff04. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:26:22Z), 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/USDY42522212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540fe822ade2ee214fe9e9d583c3c07d809ee220636f6eda89d1eac0b597cc4b. 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/USDY42522213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957026178a091e0eefe4f625d78bb9b0480ef9f997775d5a40f17ef64abc038f. 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/USDY42522214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72547819fa5e93c62f77d56e771064bbbc0aa638576762908e7cdf2f11ccbdd7. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:49:43Z), 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/USDY42522216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacc9880a4dc802a3c37ef40a639d0b5267495f4a274c6c2dba5fc1bb458412d. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:02:31Z), 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/USDY42522220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9046d27389a148b2494808f6655b0ddf2de7d7611e8813e186545d0f0d27b50. 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/USDY42522222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019a54dc51cc7f9717a423f3d92ec2c08d8304015ed28597f4d4d6347e83b5c9. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USDY42522224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545d927ff2e563711be60dada96c8451541205099f76d045bd96ae1e56555466. 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/USDY42522225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c9f1b01afa094727873d676001da01402b6a4fe148f331120a643f8a925522. 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/USDY42522226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea4963c7fa204194babfe2c38179c3ac53a1627ca7008d3d495ac4d2566a04e. 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/USDY42522230.