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 0x37c8d89e516bc98fbf2802f7bc78e2b304476cb1b1475fc6afcc2e9a5a1e7f63. 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/3fb03d69-00cd-4172-8a24-362b038fd924.json and https://artists.proofprofile.net/proofs/artist/3fb03d69-00cd-4172-8a24-362b038fd924.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 0x18cef2088e293e9eaa5734274b0645161776449c7b734c0fa86878f9010f2cd8. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:06:08Z), 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/QZDA62017746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae821e9f4f1e468b9f77c9c44ef1697d6e4ca072e6de1d27f83fdfbf55b50d5. 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/QZMEQ2066802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9693edcc97a060ce561d705ce894a4347a8b285faa93a15eda3ae467a76434. 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/QZFYZ2188725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b4bc329f051324305e50a86d4fb846e109c849ec0f692603d83c0163536d82. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZES52105297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28475563343398e22298718315e6c532306ee29f158dbdecc22abce208f4fc22. 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/QZES52105298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d02b00c037b51689e8028459fa390961208a1b8c5c8d743c76ad229e7a59e37. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZES52105299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1eb07e57caef808232f499a844a934e3605d1bfd5f40fc2afb124a42ec321a. 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/QZFZ62119877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16173154dd9f53fb139b8409b4c491f7d17bb0dfa010b5846ff8e5f3a2ecbf7b. 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/QZNWV2068426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cd05c9e5f90044d40c49b0c178dde69b2a0d9bc44fbd0cb67ad9407b54424d. 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/QZES52105300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c514dbc223f908e7815498f0d363534739d901092f68de29fbdf12353a32b1. 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/QZK6K2085524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b19ddf982781de4edfb628c7b7a9039cb8a403ae96f8a06fd027b42e990e5a3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNWY2156329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a906341f7c8365e0ecc7d03b0e260b149dcd661413f75188c05d3c5a45785cb. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZNWY2156330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4fa3b658fd3d448d154252fd2ae518470b60ac8d68a1ba1890c748adf1f536. 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/QZNWY2156331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fb1dc20ace625346906a057ea735262d551831dcee8fd5bde7370829bc9408. 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/QZHN72149732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd5a4badbefbe82c000f6691e4589ccf5056cdf106832e5b997ff1465b7a386. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:58:06Z), 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/QZNWY2156332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f98b33ae4a01c8f775fa1840f1102da9d1df5c78c4f8fd323f574b21c7e9b3. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZNWY2156333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb205b8c04342315726276f06ce18448fb0608a01390fe0eee272ae6d5b412f1. 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/QZK6F2192472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091d7000e4859838d8313fbc0266378dfb67b8bef72eda5a690b2ad4f1e840cd. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:20:36Z), 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/QZNWY2156335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb9968b31acf52956eb5eb07df3edf862830cbaa5b77816a2aab6c5e3da31b2. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZK6Q2153960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfe8441c5950df8f0799d40a5102c8835b0d42b480d9dc727514e9d910b56a0. 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/QZNWY2156336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09aeac02451d1304a26626888c8a7078160c548aa16d808183d6d1fd6f2c74af. 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/QZNWY2156337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c86da042d33b5c0322146aac2fbd56155e24c85262daa13375341dc6f6e3b58. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:08:15Z), 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/QZNWY2156338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88dd9ea07b8574764cb93d674e1214eed416e86d507f0cb0a25e0c875b3bc6e. 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/QZNWY2156339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ada4656b5ca1ed74e51811f50268224443b3a466a2816d723b84885f31cfcb8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZDA62260337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d9f0e3452262311cdd8afa7ee1b0918d3b8dc3c6630bed99ddb0b4b798d017. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QZK6G2248681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866d5b4315f6299ef4f7217d997df8d2d8ecfa68cb3ba79e63fef3262e2da9e2. 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/QZNWY2267167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45845762a6a8f8eaf9fd971bc3adb919906ba0ddbe58965fdaaf2b374b3bafc1. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:24:01Z), 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/QZES52302249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ada4656b5ca1ed74e51811f50268224443b3a466a2816d723b84885f31cfcb8. 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/QZDA62260337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da7298c7c02122cdd813477bee880b14c9cf42690a5724490268714df95b7ae. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZES52302250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedaf9ba5fcd552c860313c973c8e42cfa11af1238bea0114057fb958ad70bd76. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:55:20Z), 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/QZES52302251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0ce45df268df668eaf2de9efa7708c99110bfe3e83ad0430a1f9cd160dd75d. 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/QZES52302252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25b88c7a3475850fb07ab1ca94c5d4023f3572ebc44978dc9dbbecb24642219. 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/QZES52302253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c219859c28706b7493b9550cfba3af0154de08f462016e42d6abaa6c05f54a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZES52302254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866d5b4315f6299ef4f7217d997df8d2d8ecfa68cb3ba79e63fef3262e2da9e2. 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/QZNWY2267167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d9f0e3452262311cdd8afa7ee1b0918d3b8dc3c6630bed99ddb0b4b798d017. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:51:34Z), 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/QZK6G2248681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe001d647918da205d4ddd2435cbc5b877dffba4e1238c2ed9562409fab6371. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZES52302256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e9d838e4421c5a62bfab99dd29d30118ce26c0387b8884b0f7fd697c65386d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZES52302257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95cb079ba692321a44a4b371ca75c5d214583c0ebc2ae21e7d319b34e926468e. 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/QZES52302258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2fa5586fc163845099e470b159fb099ed116686b047673a6a05710a7452584. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZMEM2330414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77400979af58daefc7b035b920617c34e844742907911cbcf931eba8c37cdd8f. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZNWV2378909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0cb4ded91cd0dfc937c0271645a07b665cf0552267c684985c5ec6cb8759c5c. 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/QZTB32337282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf63265ea152e6e144949aad13c52d80f2374ca496d6079e57b918e6512445ba. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZFZ42445809.