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 0x85208a3e86c34b1f3664ded1d206d35eb9eaa681d83edda708293f7515b1e40a. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fe14956e-8cec-479e-a4a8-18c7f6614879.json and https://artists.proofprofile.net/proofs/artist/fe14956e-8cec-479e-a4a8-18c7f6614879.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 0x314769b22849396d3c29ee15f0fec784cc52d258fe585300192dd2340b3c16af. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HKG732102841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4a142183b85c587d2bc4d2ec57c035c7a21a9f107c9a8c264ad6e8b12e63b0. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T17:51:40Z), 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/HKG732102842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8bcc7b0a15f6a44a4a9ca2fb5368732f1e6719ba53eafa75a9d9dbd9a2dfac. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKG732102843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032ccaaa16418e34e15dac5c260f3c485b85179f4efa1ac85e0f48ba82dc6685. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKG732102844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c06542f96022f1a3aacdc69a8b3f3ffc79f8265048bde398f6c25116eac487. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKG732102845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12ebb6f42aa7b03aaa4d61336c6ef7291483045b2b19b990c95719e121b5b26. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:26:09Z), 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/HKG732102846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e10fa73e38b85e4cfbba2808d5520e331a7799b0c8f57572dc0f23f1d15fd80. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HKG732102836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62df3a239fdab7a0475a3cd81046576dabee56f105d14d8c13b1391d0bbff9fb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKG732102837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12f457d049fd19a1b83b717310e7adff8a105d985e56ea28c8a8b68cf873a7e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HKG732102838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35deb8df7604f9607859295dabf249dfb54e6394cb46a47a02a6d6475984b06a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HKG732102839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3cd086d179bb5084eb04a070396e566b5b8d94b146da7812db5f3bddf77843. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKG732102654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6871cb39803138f3f84c4358985061edea30d9f2a6218ebf94d56e4aa61bae21. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HKG732102655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb363e0d99dea80dd352312a9a87e4ae39693e8bd33613264acb045de015dcc0e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKG732102656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcc7dfc53518090211a46c94405793b2c2aaae36436db6f15e2714a02121b98. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HKG732102657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb529f55482842693ffcf41b8b85dfe96bc4e1981e5ccb45fbfb2eb645c2045e1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKG732102659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed0deec01ef8248974743a9af42ebc14ef2ec8fca785ef2efc0db09d6d76013. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKG732102661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bc63b59c75c7106b9ad7d9d5d0d42a252dff110632be227ce0b6b39e2e6b8b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKG732102663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c285cdfaf8ec53216129a6989c81973ee7a82070a74b132ead52f95efe91c37. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKG732102665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33182bece8527a004a0c5178b180c82c3c7aca6b8597567fe1c3d194b76c7c7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKG732102668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff07549c2ad3adf2bf0ec56c1011e23215d033914e527f6e955672f00d65834. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKG732102669.