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 0x4cc0ba72ad037c5c2e191bd9110427d7083faca8b2ffe7b2ffb574013615adba. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0eafc816-4088-4d89-ac1e-9973be41b87b.json and https://artists.proofprofile.net/proofs/artist/0eafc816-4088-4d89-ac1e-9973be41b87b.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 0x63d966861746cdacf0335a4691452be08d20871df41d6422475ec18e64558ef3. 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/CAW112000307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55dcc5c8553ae5843abf1b28773d6d5195952bd177a3a44f0afe4a0effb83fee. 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/FRX202246923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400411773cea1078903bb8e5c6e5dc2183ed233ceb3ba143928f8ec8c5936791. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CAW112000269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d966861746cdacf0335a4691452be08d20871df41d6422475ec18e64558ef3. 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/CAW112000307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2c2c39518823c085257bf2b01abf039b2e42bb70a4fdb3713f8040735f3c6f. 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/CAW112000251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4720ba9d952e057646c85e9b7f5748dc7342da2339be4e87b9477a119af9381b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CAW112000346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e14698d03aff1be9d463d042feb337465ae3e59b7812bd8f0ee514aeca46d9b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CAW112000349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdeb6e1b486b846b0627829264ab3fea6409ee6de3f31b3451db7063abd9810. 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/CAW112000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a572eb6acbf4abd85c743cada0578e2d826e36a3ba36a5eaa663684081cf8d4. 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/CAW112000330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ac4b5d55bb1124a65de27a413b44d2e00e79921c7696d9134555562bfcfd59. 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/CAW112000132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95652a45ea076cc31dea1696f10033a1f4e35a84dc89a23005a37e5652b83f57. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZBRF1814653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebe6efbac7691eb1c7bc5887ee62d6e8dbc575a22302f78f81f4a6121c30c3b. 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/QZBRF1814659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586bf243db709d2dc735ee56720d9f3450f53d28a9f24b5b26ac640074588eeb. 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/QZBRF1814660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0062ba26e4d6b59ec597f3a01f9a78781f40d68367b5024555b3933f376cbd3. 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/QZBRF1814661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690d9ea1588da50493f7623ec4225818c4e9e74e3a7653cea746c35b59508ac3. 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/QZBRF1814662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878cdf1612b757dfba2a346239498fab1bb8a1fffa53d50aa412bc903f42c601. 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/QZBRF1814665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f196492f028bc97ad23f7705fd2c0bbb4fb0d31a42e24071300b328f4c1826. 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/QZBRF1814666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d95d4e88afd568a51f9a1231b99d40e2289cafe845f129fd9b4c5b692589933. 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/CAM372300309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ea2ce7e60ed81cca27e214e68c97bfcc463e5dc180d580bb3fb10c4162eafd. 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/CAW112100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49ad2d2fbd86566af2c2351ef17aa2d2893fbfb23eeb531a996ab61c56b035c. 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/CAW112000430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf62318728c7a539491b2e520b8a6fc0043c6824844f0f359779ea7f69ec11fc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX202074236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2c2c39518823c085257bf2b01abf039b2e42bb70a4fdb3713f8040735f3c6f. 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/CAW112000251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1a3ec3136655292060c71e1e6ff554f39b1303378df3f2a0d34d73ed6f2a85. 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/CAW112000188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdeb6e1b486b846b0627829264ab3fea6409ee6de3f31b3451db7063abd9810. 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/CAW112000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfe5e71ca88f305a84d772932388b62ff280c1911e893b044dbda0829120877. 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/CAW111900403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce5a6dec600274f5a79dda5867ac900260cbbd73aee530716a99cbb51c136c7. 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/CAW111900144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd339b78450bb918b393f6ea91b473611327aa452cdbfd2275e612e38cabeb359. 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/QZDA61923359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d668363c942b5d0f978b3ba05fb34a560a3bc7cce2d8a37eeedf90a5b32dd9. 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/QZAPG1812692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d4f9d1e6789e3078bc8083535b56a7fa5892dc11b24072e81d4857e520886b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZANL1795245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e574a282ff0b83761a8dcf5c73e1b24de8a90971a9d75a87640a9b3df3d5ba. 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/QZANL1729809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa769c557451aa049fe2945c7554421c5d76405fb6a26d994c53c57621094498a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZ9Y21780316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd75011f18e4f6ae6d08c9e06971886d207fb40e7ea070e4185d6350f646f87d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZ9Y21780315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c52c354a5c630a4051d319bb9257629d6c936ace8b814748d0f40c664cd1e8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ9Y21756323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8870e0442eda2c8ec56710697b23212eeef3ba0eab602d6da61f358ba3e15b93. 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/TCAHY2443632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4661ec45665e317c598771465be198f1fd16c78fa3818393d7664a444889c9f5. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/CA5KR1980431.