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 0x7400023378ff63679a5e033a764d72755b68da21517e92231ea74be80d0cb35a. 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/3b070429-ea5f-4a28-ae01-27de96383c94.json and https://artists.proofprofile.net/proofs/artist/3b070429-ea5f-4a28-ae01-27de96383c94.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 0xdaacc5c31d73f9ece0ae9daaf22f971a795d7a05082020376e70b2792582a91c. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZAPG1750670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3031de2a8f90a3f702b80c8ee2b6be67fa01e19433ce05f424e5cbe118c1ce. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZAPG1750671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff2090537ba392a6209d4dd81dc65e3af032e528587d6676b60055a989d8f1e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZAPG1750672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e994a4783f3acb576f5f040806b1d7c5c49e4a5a3be17141b82dd09db5b564. Chain 2 (Bitcoin): anchored in block 957625 (2026-07-11T23:15:09Z), 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/QZAPG1750673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f705ea398672ce1d6818b695300828211457de4b47bacc9eac660005fefd9b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:20:37Z), 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/QZAPG1750674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30b936ab47625d6fa046f49fdd7249b08bcb51459d8b0c3b702b2cc0f7f9aaa. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZARB1855667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73a7bfb54cf34c804c3b861c88f812e295269c68ab1258155dcc5ccf3203e9c. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZARB1855668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a26f2408ef02083781edd2536735fa3edc24a3c973c2cdb8bb7b906f8e75ea5. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZARB1855669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf957a804e32415da094bc7c6128c73fd9f0633be110e7c724e1819147fb2fa. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZARB1855670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ce6d9026e59462e7aaf85b6c56192f28ecbd877162e9307782797508ec336e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:01:43Z), 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/QZARB1855671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1cd86b7b7e7cf51a4a3c36ed1550643c24c0dcf9d73d13e2b3edf241ef6f421. Chain 2 (Bitcoin): anchored in block 957624 (2026-07-11T23:13:54Z), 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/QZ4JJ1802053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45eb3114499024e8cc35fa6967e382b54b17d374c6a4f200c70c32d7cf97f76d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZ4JJ1802054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540599fb807fdde777c5f7bdda2e5c5f8af8fdfb1e211e81e7f830c8a490d646. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZ4JJ1802055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31efc17070604a9b2c545cb62ca8905a92b046c44226927b1b7440a96b2deed1. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZ4JJ1802057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cbae34a542bcdd4c1fb81b0c2db0f70fa562d1b994474c14bf91dd79b59baa. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:57:56Z), 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/QM24S1927105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895e06ad28925baa43f10f01bf6d3d9b529667fe430cdd58ab9b6ecffb8af406. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/QZNWQ2066733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcecc6cbcb0ee714d4d97079ef5d2420eea1ab4adbd293d92012ce11b0ec769d0. 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/QZNWQ2066734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310fb2c1301da1c4b788224b2de64fc81e544997a6801a92b1bebaa015bfd645. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZNWQ2066736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cf986f43662a68221643cf1daec80e582d94eca8cd4fb5f18493623327ceed. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:06:27Z), 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/QZNWQ2066740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0965c51b97f7a690bb9d3e5af18eed284b3d5de0bc6940fbfdce19cfab1e6e22. Chain 2 (Bitcoin): anchored in block 957632 (2026-07-12T00:10:15Z), 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/US3DF2141616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cacac050275eef95d9cdd05c03be3e0f53a01b143d963784944b8272dd45de5. 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/QZNWS2148227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c83ce1d8912de0cbcbb6eb6d4a48a97e8bd3e1effc89dfef3b812b0709d9dda. 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/QZNWS2148230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8fcb3515e99f181ce5c0a20a8d4140979c778775197100f7037885b3512a21. 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/QZNWS2148232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5036959db83ff9d79c70d7f5125525fc5b24ecec2c2d1d16e24a507a3cc292d9. 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/QZHN62239458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82e6604ef457d55f6ebb9c288e76f0644fff07b0f47736c0049f4015f1e2e14. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZHN62239459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87399f4d92e7de3f3b5654373a7e5b6f0dc8e255c14d0df7c24f02b24bbe9b90. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHN62239460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8d5f2d28c31ce8a70feff8947840e7a5bf270ff77f393cb2391f4db013cc23. 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/QZPLR2253024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf287c797dae73f47f5064144cae3ee27968b40673d50ad86baf51aae9fa5cd. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTAU2201874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c8a3dfb74e2f06de4c9d361e84c7e7528367d1a7e532566ecfe1ffab48fa99. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTAZ2232492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ced378754b45bcb9df1f98d5b3974c1dd180f363931d61d4673920d2145feb. 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/QZFYZ2328478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366878662a655b6486728ed49b59a4295ba8a8eef027bd107c1cf1d4dee35c18. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:00:07Z), 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/QZK6M2303765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7b80f3a6ea2dd31e0a82ea05a857dc944cac068482f4a101468d3db37f804a. Chain 2 (Bitcoin): anchored in block 957632 (2026-07-12T00:10:15Z), 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/QZMEP2355378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615644f21310c92b295676a6604523b4083dedccef989b399c2b79808f289899. 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/QZTAT2336266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5acbd7dacd52d650b624422937a9b1c0c9549fc8b8773b3dff1c46ea1d0d23. 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/QZTAT2336268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6cfe33f70fd556d24cf80550487edde2d1486728534f65d0e1f38bbe3ff6a0. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/CACWV2494832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a087be4be985c7dcfd5a1d81a15a6af3c467a25134f272f37d32a988339a72. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:58:23Z), 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/CAENV2428793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ef6c002166ef3df7230e81c793b09e7c59326dd6ae8eb867cc28af21d1c42c. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:15:50Z), 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/CAGOO2460540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eab67cfb15b93bfe91bc3bd277364a2c8e07f186d84fca63541cf21ea6adffc. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:20:31Z), 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/CALVP2480697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf85e2ea59b5e8978a6e1ca43dc3977b4d6f9e3b905592626ec7b2663a91ae19. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:32:34Z), 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/CALVP2480698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31016c564ca2129dbeabc4fea1a9d66eba754b6d6e893d3da5d654f13e613e58. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/CAHQJ2534529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d60e1dbc188e5689b6e8a42a64a2cf355bd4c1ad939a051646d44dc9f66380. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CAENV2565434.