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 0x37f573c0f38339f02ff49ecdda5f5982164fdd0a07d808d397624c9766fd3a99. 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/73e0df9c-157b-4a19-b61e-8e6d89151e67.json and https://artists.proofprofile.net/proofs/artist/73e0df9c-157b-4a19-b61e-8e6d89151e67.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 0x223cb5146b204dfb230201919d724e747c6e1a0616ff3aec8f53ecebf6858363. 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/QZHN62089125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae50d0be47374b6e33214a8ccbec475330f22ef6fd18d35a65c190cd8c0c240. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:45:07Z), 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/QZNWW2121881.
Walking to the Beach with a cool Drink in my Hand
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79aacd58b1ce5d4ba7f60b5d80fa34fef45f42838ab488d40e5010e9ca580f89. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZK6N2287637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f986738636baeb2dfddaca6ffca485b649214a9afd2aa4b34a1d3ee7e7a05d. 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/QZMEM2288022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8428cb9fa6458dc151afe0f0280f7bd05ed95b7f6c563df9de88f95cf0730c20. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEZC62212050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3170724f42592646c0a5cdcc9523b4b8161c001f98f7a8431fe19d5aeea140. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:39:22Z), 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/DEZC62334984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ee3b3b008623670c1773e7aa9b74ad9f4bac243544f17cfaf29c266684bd1c. 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/QZK6H2376562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1f226ef89491e8e85ee419e71520ebdf948f9ebc516bfa40cdc1112017f36b. 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/QZK6F2492919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a24c05f7c3b85989e44d8d8b67efceaefaa7b87cba742c6820f6399878a39e. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QZRP52401818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9331a971af55bbfbe002b4388a4f0b5826f318c7761029ac759828c2db593587. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:56:51Z), 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/QZWFS2430614.
Mellow Clouds (Delulu Dreams And Demure Aesthetic)