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 0xddb3a452b946092004d01eeca037bcd012b81c07560f94d2196efec5d814883c. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/439ed0a6-eb94-4890-bdda-dc191630ef8b.json and https://artists.proofprofile.net/proofs/artist/439ed0a6-eb94-4890-bdda-dc191630ef8b.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 0xe731b970af6e2af981e386b9938f204374f522d85064b39b62033a9ce3d2c1ca. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QMFME2058710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7a8b7e14cd06195b3dabd0e091624074391fe4ceb872fe38fad70aac435367. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QMFME2058711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f48a28f325819e2bee08145718630428ed9620ac4e403888537ae2a145f2eb. 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/QMFME2058712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102363f647a6509dd3fa163d3578b1db9cce41d5221265a72dd6c62faf2a727e. 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/QMBZ92062520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf958be1479c346ef4007a5befa402b285fb8b0828243de34069577c92a715817. 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/QMFME2058674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc944e7bacda7da9f66fa203189a84fc68dea86b44dc926a88cd44b126e73549f. 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/QMFME2058695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a2390961e9026202c344b55786b42c65e4228fedeef0e53d2d61efafb18ba8. 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/DKJG52301001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d06da41104e7889c214913fd4c5397288581f8a8d2984e0bdd468a9d007efb. 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/DKJG52301004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd889c913274180aae980d489358e0e5f541f5133b46a108ffb7ec6e8d1f8cc3. 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/DKJG52301005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d1a3eea1539387f565b0dfa38987b06b8dab66953981c7f959cebde88f114c. 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/DKJG52301006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5dd35b192374da477e1935ab246f8e95855c7140c1587aa08f888e0d64dbc6. 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/DKJG52301007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95fbe347987bd451536fbe7eac008d28d88814ad4ee795b15671f767bdb7272. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/DKJG52301009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109980239da161f543c9352c12000d2dc95bcd6884565817d77cd5631c5d04dc. 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/DKJG51904001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd354bf9e4e62718b61809521b140abbd9a7314d0f35ce4d47b41f988b74d838. 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/DKJG51904003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372627c51f15cc5e59fcdf816d1f4ef000a7a185ca74bbc51bf771ed6155b371. 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/DKJG51904004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a48389ce028b728fc4c3ef37acdfe753f7917a4b8dfca7ee96e83efda92d0c. 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/DKJG51904006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe66e8bc14e953c12dc8f10baeb0f4fd1f3aa2349ca32f916056faef5c8d7e7c. 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/QM6P41982084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbaa0df522d05b5e750204aea2827cc4a45749655b1fc61c7e954580a98908d. 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/DKJG51904013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ea21e14cca3ec604773aee696e0653dbe327d2f600faf64f251cc743a5d8c6. 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/DKJG51600901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d07636433fe732d734353fc2f87c8f5f591f64b27bb717a47bc3501c280708. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T14:04:23Z), 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/DKJG51600902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621ef1d1cc369cfea87b067cdfe4d9d35c57d0a8af219abda08b782629ca9e58. 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/DKJG51600905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac652ad729c0b3ccce027dad1fe3e4aa18deb6ab7c786df3f18aeca4cb97dd7. 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/DKJG51600908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65f4882dad4d2d362633fa47c056ebc97b86097c49630d6023a3409f3f438b8. 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/DKJG51600909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25b802fa21f0a5b234974c2050f01337e2e006aeeb002e1ef6fb7cf5ec583b6. 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/DKJG51600910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91fe2b3e72397cfa9fc5267b0be8df3e23cd3e174246758141d01b60fb3f7de. 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/DKJG51600912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9577dd50e33d6bdaa556e88cf194bae00c0bcee751f846ae1add7234bc9d5e96. 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/DKJG51600913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb273aa1d59b6f011c6702ecc3c8de912169242cac675540f0eefcda1beea43f. 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/QMFMG2343272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd889c913274180aae980d489358e0e5f541f5133b46a108ffb7ec6e8d1f8cc3. 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/DKJG52301005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766a91be8587f45cad31803bd146b127652bc2672645428325aff43d197c30a9. 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/QM6MZ2207992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dff6c402719bf0d505454aa25cd8336cdf4b3e706655f52762e573f22e7c15d. 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/QMFME2180866.