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 0x6bb59cf42bb5c794ec563cec4eb16555dfac6a1910410be9dbf102a1f90916fa. 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/704aeb7a-bdb7-44b7-a6c3-0e24207f9b11.json and https://artists.proofprofile.net/proofs/artist/704aeb7a-bdb7-44b7-a6c3-0e24207f9b11.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 0x737d62754f1191f71fd308860ba0ccf07c60910c6f174aee50f34e2711257831. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BRSIC1200193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d7fc68221551e97ab74a6c6aa05347d33c677c923d215e4fbc0fd14bfcb8e7. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/BRSIC1200198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef099ba49a9bad1b3355a6d8ef786fcb55a584ba7f0c8a2e195670ac8f3b5dc. 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/BRSIC1200202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56034f014be690050e27b195e7ab4a50e7117e083e09cedc7e6b14fccdd7fe2. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/BRSIC1200197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6503d8dd7e1e973eb02a18ec16b183d15573243a9f1ba1d564543506abbd7ee1. 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/BRSIC1200201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95bd44d83010a119c4c2a190f62e4568b1ff43022ac9fb0cdf8157b63635de3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T03:01:39Z), 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/BRSIC1200200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c13abbea58262b2bc142a990a90f445e1ead55e9668eac1b7d77fbf89107cd. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:53:06Z), 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/BRSIC1200194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb091a9e8ada36802885b82523c2f02734176144fb130ea56a72ac0bf9aa72586. 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/BRSIC1200196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ac131059d9d00563bf388b7bfecd6128765114c92a3ce637bbb45a6aa88b09. 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/BRSIC1400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56871c232da4bed680abc4fad8f98eb850422158ceb0c32e0eed75a9fb09eba. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BRSIC1400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44598f5c2a70da830a0e71a6d7f47bc03a0396c13bce6c793b447cc1f48ee211. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/BRSIC1400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9aec673871fd4595e0a213b0cbb40bdcc0eaff88f4e9cbc2de429d9f5e06c4. 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/BRSIC1400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7170073f940cabe48b1c26d0b5dea56a688f263b35d10e5fa9a2edfbe99670. 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/BRSIC1400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f8d7c260c3c47fbe7c8c5d2fdb6c1fe65c5b30cfb4be4bab99d87ee5ea6e09. 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/BRSIC1400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc43345cd4b13d8943a718d40c3f47c75e31dd067d94ec96411d87699b382161. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/BRSIC1400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a905591904cb136a87193a001a401c94ce2bc5ef7b06fb25f166e79a4ec9ce8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:54:27Z), 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/BRSIC1400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b02840c0b1613b1457490a85dfcccf080303894972c6f3ab986bce079ec898. 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/BRSIC1400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415fe8dea021423147ac8ed450cdb97c5d4d93eca31bd64d4409a4701e91c157. 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/BRSIC1600037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfcd17f6b54d51fca2d3e51ac3301d54242cbfb23d200864a44b9567b702086. 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/BRSIC1600039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4cd08c795fdb4964e77b6f4acee3262150f9e9ae97a2b05f45f594dbc0de2e. 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/BRSIC1600041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2112d6f98b6332d18cdddd984308baa8278b8c07da2f647c5247f42277f17bb. 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/BRSIC1600042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b921c92a514bc45ce665ee1add83f55cccd7c6ee3b5477acf9cec2336e971b. 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/BRSIC1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf4131db5edf1c2bbd9a0b659bda0f3119961c9c03766910d7569092a64860c. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/BRSIC1900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6d0554be9a29f894a61f475310d1ad3676366fae9d570d52601f3a7c70a3e9. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/BCDLE2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5daeb13d60e760c48d4da48543ae2931bf3a3d32c821ac4a9454f9ab5aab78f6. 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/BCDLE2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0af21aae166ee896b50844e1c0e764a499a6dd75ff44f500c0c8b92b0a0af9. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BCDLE2000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1472586c30cba7a0397ddead5a8730111e336691022754eda855682a6912d2. 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/BCDLE2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa254b2b1caae22ec4e9d2796495cd5e4346cd77cf94892748de9ce5f0dca8fee. 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/BCDLE2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008f9d7247a6c968c2e507f8097957ae19c0be7dfb98fd80f5a200289ea5e9d5. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/BCDLE2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8b4cdd99b37b4a0862d217ad08f234351b6af6a57198157cb0f4ae809c315c. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/BRSIC2000056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27b036566a2eb817a0a1d7bfeaa0ba0cac0cf1e71d90086acd2e83ec700d867. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/BCDLE2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1ced2cf97cec66d6e3a508bc9058d1f7a393cb23b0fce798d1e68ea50ab1b0. 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/BCDLE2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ddf2c96c908510879980f5da21f0d505edc686769d15f30932352aadd60665. 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/BCDLE2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46932367d7c81049fd0ce20825115b7625f8aad9de8c42073cebf4a8af405aa3. 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/BCDLE2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de316bab81f6698c41dd5a9704b2620c2c8b06d6b09ae4a07b1cd076b2e003a. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:05:00Z), 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/BCDLE2100012.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9c67440fe6d4d5ac1cdcceb797e5653e04b55b7fde8fba33ee65ac0b8e001f. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:30:38Z), 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/BCDLE2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb6d6fb242bbdbc624103f541b52222b77770c25cda30f999c9724f6117d094. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/BRSIC2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa48fdf7fc3be286434740bab20f3b3f9ff43b17d6c796f325469f27ff9c203. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:42:42Z), 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/BCDLE2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764b9825f888542bd452517b752d47d83d99ed70c7f64f3a8019dbbb6a04d0d5. 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/BCDLE2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685545701bb953da2d3038eb1e47b082839af979675f8c1c0b0d601c599d313c. 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/BCDLE2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758e4007153c0f72037b70796139db2aa2d823b584f038b6ccf7db0c8f729589. 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/USHM82184995.