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 0x9972ff6f0185d6ac6de432f4e5b0c5943f78f476f5a99a6f15d933b894fdaf68. 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/b4fbf24b-fff3-4c99-ad8a-d2ced421470a.json and https://artists.proofprofile.net/proofs/artist/b4fbf24b-fff3-4c99-ad8a-d2ced421470a.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 0x8dc5ec3c9e21e53aed67de7aca77b31709d32f7cef6992a705e2dfd3bfb8c3f6. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZTB92232312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c5a14fd535b7cfe93990afa95605f713fe5628dbfb1412a2f36e7cab658a8a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZK6L2324067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf67febb04d6d50880ee4346ea41d635e2cddb301f9109f537f83b1046250e0f. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZK6L2324068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740ecf8cf076fcbe6860ea4eee1411a07cebe5327b6a58ccb79e733ffca98273. 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/QZK6L2324069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316b94c4a1f13e636175ee9adfd26141ca5cda352ec395049eaa48aa02feff22. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZK6L2324071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f97b140243250c6076febb03e4aa7ebd7345f3100dd4b184e5bf925497d1525. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:08:32Z), 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/QZK6L2324072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f8d1b7eea92546cdacccbabfab64b517df75b3e21f7e9f03a5501112f531c7. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZK6L2324073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec039b001e10cf2af48ecfe89d10bb66e911a42b3b85b80390850d8405f6ed13. 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/QZK6L2324075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa451067dfd7899ed444a0b5203e3c2487805a6b9e7d3c27a900803e9356f39ee. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6L2324076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0ab1da8bdae66a0a0e4c1f21cd073bc142a764f1cbfcebe51cb1fb9699c923. 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/QZMER2314838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872a5bda4c763f8553415575070243b28a67d932312d74be2cbe76d957685572. 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/QZNWS2322455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0ed5983b625b49df1cca6634e91690e8ac7d8cfe5ec51b517508f171e14d4d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZNWV2325794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe00d5db6deb260885d1c59a9eff436fe450f9f51dc4f541b4042246ecedcee. 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/QZNWV2325796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337f7c291f03193ad00e8d04dbe857afb25f768aa9ed66ddbdab49145f9421a9. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZNWV2325797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f60470f0e0650d763df431354c6e9f327bf1ab5f9cc5c25936c611a7b16ddd. 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/QZNWV2325798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf8200238be30c07df6b851d6d68a9e83e134dc2ccb01d0e8b813e982177279. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZNWV2325799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f5d81c3102ad5be3e1dd9e5e1e6e8a08cb345991bb79235b705b0b360df5fb. 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/QZNWV2325800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41fbdf94c9d02d4f5d23b9966c40904b2972e3e6598caae1a999033a202fcb7c. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:29:16Z), 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/QZNWV2325801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c4114f511ebb728837cff54d6ef9206174beea70033beefa1bcf8390895cad. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:22:53Z), 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/QZNWV2325802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f11e9496e2d0a13b043dcf000ca2d66b2e4bde9aa576baaf65f698ec3019ea3. 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/QZNWV2325804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba25b6d65ed32db8ebb29ec6c136b524e8e5b79777594a095429afc227af74b. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZTAT2370085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5add9f29676f674e1f08325d9da1f9e0ceebda7264a7190fed5a8a3a19a5f787. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZPLS2384129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d0a79cb7c305177a409a2da00df12791731de9ef1ece3a70ece83deee7555b. 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/QZTAX2392994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980f2f6354f9224bad7a76bbadaa55f4928089db61da1534a5c1fe95ce040c92. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:38:34Z), 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/QZWFG2322891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb53fbd8163da4bbea72eade975056a63f62273288b9418e7992c49c277b12f6. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZWFG2322896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6041260973ed78ba6194a3545cc8db401427fd43842ef89d42a35d171c7c9626. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:15:55Z), 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/QZHN92411133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87e1b500198b350a5aa9db7f70453bb123eecde5e0750cd7cd047e4081fd65e. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T13:00:25Z), 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/QZHN92411134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed9528a1d29048dc9779ef0df319b7f969ee9da41a6ab0b38da8c674716de8c. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZHN92411136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda0df3ca6e40e15a20402b345c570a084227cc01440d270f643bc76f9076711. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:02:41Z), 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/QZHN92411138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8a4d97f8c4ee9e1df70d68df5d79a385b31664859484d1fc6b72f3abe60990. 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/QZHN92411140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49c63a48170b4044dcbc82c412e5f047ed681f0ca7bb3363ad1357e50485b1a. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:45:03Z), 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/QZNWS2460267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec26841bb9dbc646eaa418bb5cb08022b13f3bc8c624d829098bd19abf27cf37. 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/QZNWS2460268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf289e4f3a596a1e0a8338cabd42b52236a3ca26354f55aff5a6f277206cd625f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZNWS2460270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7adeb71d92d767ac14feabf9ee2281a380ebbce9eefc44d320124c22ff6848aa. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:07:38Z), 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/QZNWT2480387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d74eea98855caa2a0de918cd596a46108a49389b7700834b726ef76b670099. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZTB92422514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fba4907e542e2012b8afdd69b28a2f9134783ebe3708e8f1e754a599147676. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:35:55Z), 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/QZWFM2445055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3fe88f0ded031c320385238081cfede3857a1d6e029e3e24a82743e9af102c1. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:23:25Z), 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/QZWFM2445056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0b41925948984cc0f82bd8ffb17a99748e1965f2dd0a1c557c36f9dda8ab66. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZZ7K2442202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45ee75851ad594160c2ae994193d18e16654b0af230fdfaebb9072fd5f08143. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:02:43Z), 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/QZDA62528305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2717de5cc2743be98470a6d6f221d219bd808c826c0228015ae991e5c78bf46. 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/QZMEM2558879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dec7f24ee24543a7ae25353ac99fbeb72837c4d6f8d110bdf275ab9f27b1939. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZTBB2530868.