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 0xb5e2797409c916d2c1316afca987e9e2dc30f327d4a5cd52f2ca4702aaf52df3. 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/3ecbc4fc-f1e5-4b03-95df-9469333c48ab.json and https://artists.proofprofile.net/proofs/artist/3ecbc4fc-f1e5-4b03-95df-9469333c48ab.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 0x4f54a40687523ba4a587f3421139619eab15f76651706c3235fd8c79f2d72de0. 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/UKP3G1801441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88185b290c99586c86e8810913c3b90955055d9884a588dc511407517828f0c5. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:07:20Z), 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/UKP3G1801431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00bccef199a1b72a1b9ded4ead53cfcf062a2aa15e4b3314178fe2a325e66b3. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/UKP3G1801537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f6fc1058dbb5bff32e3907d114fcb887f624de3572db1bbbcbe0d6c63ac516. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/UKP3G1801538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6763d2b278e67b63c0c9bb8d3c0f35bc7d6a0ff814826e0ad691ab500de15fc8. 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/UKP3G1801562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ce0d89d559a3e9a31af5ab8a1809b52af452bbe1d5a14e313a84e45682a675. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/UKP3G1801434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03217001876a0f6c1bd67e9b1ca006edd25ff470dc89ff06be65918aba8997b. 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/UKP3G1801453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f61d68afbdaa211dd999d2689386d82931252781bf75bf3950eb8874fbe2b6b. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/UKP3G1801479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0e88efe48a65aab5e5016e9b8487b0f561aa297500e5ff437415d79d2683ff. 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/UKP3G1801524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cefafb2317a863da49faf0b4e0ef608df662c5f7bfabea33b79460dc929aae1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:04:19Z), 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/UKP3G1801449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708add7d656fdfbb1861464b0239c06576a1fba8f06c58f07bcebcf4d677bee2. 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/UKP3G1801438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93777096397e0dd6cbf2f35e026976cab64d3e396a81d3ddb7135de0134e6ff1. 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/UKP3G1801420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb03fe1ea2a20cdd61ee3cf130c2de745dd951ce71b2ebee3c01b5d3f3e0bc7. 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/UKP3G1801553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16ba5830c38647c62bbdf90ee79e3c471dc9da1ccc500fef1cb728ef6ceeeff. 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/UKP3G1801454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c2340c9b36938be2c54417e67ad2857107a5e458510a6a8a1518dab3d6cace. 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/UKP3G1801552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5525ffec04121e7f2c3a998ffe0cfb7af5288f0aeffa7b25bb991e176a9ea9a. 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/UKP3G1801486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadecb84d01ec0ba59715bc6449b039d0b7870e3d0534ad9fc5c44e7b3e1d2ad6. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/UKP3G1801419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4f125622439164ceb903f4d31da447da0260b5021fddabada518b92b5a26d8. 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/UKP3G1801575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6ca974ab1f6efab61aa9ea7e66b0ca4a3464b96865ce7fc752a5d42c1fd723. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/UKP3G1801523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e3ee5cae17cc1f4c607f89c074fa88a5a1c76aa76f7dfae37fdde10e825111. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/UKP3G1801578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba919b777f956e18b7e35d8bc6a907d3c9e0aefb62d819346d248d288da49b4. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/UKP3G1801550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9032f956783b6bd7cfe3ecc5fefaa852e4b3b95adb822ba89eef92a547dc69. 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/UKP3G1801427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45ad73c3ae1e5b3261f3b56674073142c140717c307ce7be928fc8a22b88a6f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:04:50Z), 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/UKP3G1801544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a24c5beafb61215b05523fff6be8fa96ba2b809808b329a0bbf699fb5f686af. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/UKP3G1801443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01885253968e83de9808de0e842213f6dcbc883dcd7e277ace808aacbfe0f495. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/UKP3G1801494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c02357e7786853226b7c54375cdfa7050cad407d6fbc794a2bdaa37992fac14. 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/UKP3G1801572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610ee74069f41c49b1227efce9761058e1c1dce755e6778387bc1afbf0baf399. 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/UKP3G1906072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7aaafca2683c783ee7078fd97fb069d42e2d1c2905e0d887185e962ea7ab69. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/UKP3G1906003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce25865b48b6420f9a66a75c30cb0f93ec3263311162d589f780b7584b7ea57. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/UKP3G1905756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1492ef7b3dd07196c1bb7909fc92d4f404fa3d17d50a7ead26803266c1c9e5e6. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/UKP3G1905755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be59f5e95f206f067d6a1b1eea373bbaa4dc8c133ba396a7c7c463c0f7d1519. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/UKP3G1905996.