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 0xf6af6ed6f472d57e5f2270f4764efd0f28ce9d889a154768b046b67e39e0fd82. 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/54a7ec92-9316-4e0a-8932-8b2ed6a2349a.json and https://artists.proofprofile.net/proofs/artist/54a7ec92-9316-4e0a-8932-8b2ed6a2349a.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 0x2360aca63c3e1ef1798e2dfd86f4f9032073b2d7eb847c2f6f7839d7b6da8d8b. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/DEH742208691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f2d95e01bcea0ebf6e1cc94837ad208b032660f1c0be2e56e5726a903fa59e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEH742211481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7933f9b553f03afb79c93446da78b14dfa296d82135b877114c9ef85ba4548d1. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DEH742209005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8045d0f1a09dbe35942fb92f6431cbee45efe93fa8baa28837fafa3a7c38f085. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:20:57Z), 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/DEH742209966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7e1e8e500939002cdfa14829651fed482416a03d856b08e17f6e946637697f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEH742210498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9175f8959ba78ca492abb4ec161eb214c1d06c69f5b91d3f60ab801062fc8ad0. 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/DEH742209229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a98f27c1613d8facf3ea29182c117061d277aa4364f016edf6dac540c30549. 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/DEH742208924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7933f9b553f03afb79c93446da78b14dfa296d82135b877114c9ef85ba4548d1. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:51:52Z), 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/DEH742209005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd4aa947b5515d2564f95d1bf2e589eba17d7887a1ccc963be26d01bfcef147. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/DEH742207435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97965b6366231277e8f6db93a33c0f8d174028c021445b5e1fdb221780fbf3e2. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/DEH742224642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2ef26d25fe77eaf9f524c7f0ae72baa0d922c6e51bce4fcfce4f1f0328cae7. 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/DEH742224644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687a66ab0a2ca774cc389bfa2d69a1229ba59515d8f848ba894cc5df1716a566. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZWFQ2356033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0e595dc47729f331c770631f9e34ee64f4e0edbbd74aec846bc95df750c335. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:19:26Z), 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/DEH742402036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9142abe9039c08f9efa9890868d135920888185c0033c9097719666dd468abe1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DEH742401631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa54f66fd9078f18578096b1d4906bae0b0da7a1542d0a580cd024bc788200e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:38:54Z), 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/DEH742432214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46559d0dd9046c6b4eb9e3e3efc89f23b173d5752add57de6453263f2fb3e35. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:19:58Z), 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/GBKQU2558577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18324f10572e3dd4c812f485f154fe58abbcfcaa6fb73c38476c31919a5a49d. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/GBKQU2582733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8f9bb8c741733c8fbf0417e4b5a0f4e441fa4f6711c9ae7714785801162068. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBKQU2585323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a872a2ec1ba2eed88e63801d7f5abd35e5de320e436fa3e6355311f6fc8d866. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/GBLV62502296.