1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x0ac700a42ac656c7d9ec7ea82662565ebb943527170f02c20a378be2298eb3b8. 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/8f06dc4d-8fb8-4483-bf51-13a77890b1e8.json and https://artists.proofprofile.net/proofs/artist/8f06dc4d-8fb8-4483-bf51-13a77890b1e8.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 → block OTSBitcoinBlock must exist at that height 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 0x7b9a666001cc8a15048b894abb84fa4e17a2ad1b897331d16da4ce4fe1fe82e1. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZTB62400396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee2f89baa062ded6fd757d448d72f396bda1df5d7d9d4767de106d9bb9de038. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZTB62400439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0659c7ab2f8782b9aad1faf16ddde09fe06c53585fe7d6d0cb2172e706599832. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZTB62400436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e7cfb9fb7977091fe78b26db63e8532b3586774a57fc7f4013d1fab41cca8a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZTB82494299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf5d5f432af6ab218345994e87daac7d2dca80bdf603e01652fea368e2d1fae. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZTB92404279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0923e66da22d85155c38c6ed1da04a538eb2ff39e367f78baff5ca44573bf9bf. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:53:05Z), 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/QZTB82494301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6128264d5da16981ea9aa4c68b92dd49694c044170c36abeea2e7e293c0e66f5. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZTB82494303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf570a34b86024bc549b089f5b81600640179dcb7b315b1e7ad5054e73dd58564. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZTB82493418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1907ae59ba5d17e52a804c146c1dd45f26aecb166a179b35ac108b7bfe10f5c0. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZTB82494305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6b24573352eb2844ae8a426be904d33a0d2478adf79a62e639b78bd2f0714e. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZTB92430923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f45d262340451c05b12051efe4de4022771a831e2567e53df4fb57280b89284. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZTB92430219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6265adce447642b5b58b65fa688788e1bdbc11ac8b70830e4e0fbd65cd8d49. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZTB92430922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11815e6cef7768560f6ddf135a50c75fff839b9f39ce3d910daf568e26abdac0. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZTB92430925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f884205f6671398503d0b57f10bde6898c9ee444d1a1d6e1553f9f430f4dba. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZTB92430924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ec1e5bc16031f15552e3802349a923d017e6e830b5765611d589d5c1ef8be0. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZTB92475572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3020565e300e49b3f6742e2887e14c11e3682082058092263c723e0d6c294f84. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZTB92474881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738a1257d8b7652ff5177642123176d261bf5a0cb2933f2653c7cc4b73038847. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:52:34Z), 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/QZTB92475574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19ff6520ae6d2f96a3761bafa14b86bc640019b517852d1e9f6c373e9557713. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/QZTB92475576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebeaa31e07c8dd989157f2ce856420035a2e6262063692e714bd5c00986d3ec. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:46:30Z), 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/QZTB92475575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45ff6960c509d7151ae8526d366c0b42134615f0a24a2e2b9e393dbfd47f974. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZTBB2401383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec94793ed010795f561dd8d8b70dfda67f0b57ee57f237e8638e4bb635fed561. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZTBB2401388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce855127fe482db00f4482758793ae2b97174637d80771d18c7d6a9a4707ae5. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZTBB2401386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08fdf9863ab7bab6eb06ebcc7bc3d7fbf181c21a72732bcf4c91187f4fa4bc7. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZTBB2401405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7cc87fafe82937663ea7ee1a015128b47200a1aca898e0290f34deb4088a61. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZTBB2401406.