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 0xa80700d38f9569c88a5c1abbc6fc030aff51d454b491227913285792a62484f7. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c462a21f-406c-4a91-a0cd-a3465f6d7695.json and https://artists.proofprofile.net/proofs/artist/c462a21f-406c-4a91-a0cd-a3465f6d7695.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 0x459113e904f05d9a21b245803d047807ed125ed9fe1ea71c799f069cf877f747. 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/UKXN22484259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06c6cdb338eb0fccad4e025557fab45982442428b316d8c87c380664f9f1b98. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/UKXN22484260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3683c678393cc4520da228500aca48fd91ef7b64a316aceec98a1a1197c7fe5e. 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/UKXN22484261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc62dcf4ad585632cd70c331b8f6bf30605640da1e404418b3438e7e49b17d5f. 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/UKXN22484262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3f6d285cae6a8f9867d2fcaed03c51969eb9ece39e18522f560d35facf5bdf. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:41:19Z), 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/UKXN22484263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa971ea6853e253de954beab3f86988918c622f892383262df19107a9d31bdb17. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/UKXN22484264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d01ae9e576897e648e5f6eea6b1e7b8e6dc4acdbcf7f5ca9bcea2baf5ad0c43. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/UKXN22484265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04ccdec22e2e141e8f30cf0ed678b7ee916a91e72c7575c692da90ea845c92f. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:18:32Z), 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/UKXN22484266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e93145079af0c1e68356f3559fbcff1ffe282e592e355a158a77fbd79f063e. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:51:00Z), 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/GBMA22444557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a812b682a5bfa42428c8a7bf36041011e44c4036149de47b158752ce6735fc. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBMA22444558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807a1c9551ca9a2ec31d0bfae0b95d5715fa320d4fefd7b8fd22c801c062800e. 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/GBMA22444559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50579ab089f4c37460d377401e0ca0e3e322d916171855011e5041657a49767a. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:38:51Z), 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/GBMA22444560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d75f6b086c0d3bfac58c60ddb49602d05c58421c56d87b20b45165e62d15dee. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBMA22444561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd095359d7b38655e310a4a86affce66e28d668bf24f185a8a69bacd6e55dfb75. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GBMA22444562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab7615ef8eb5f5abe7a1236edf54f92111409ab890b51f47a19cb169db07928. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/GBMA22444563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d4b8968cc44190bb665a1de30e74ae7874ee515ee7d478a1972faf9b1f0c5a. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBMA22444564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76266de5b4566419de0b47814299ba48f3e52fc650133c26dae58b5c4aa627ed. 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/GXF9Q2440710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bc26d2b43d3400ba61020e0d22494cba21ca78937ef58a7e0415d44f7113cf. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GXF9Q2440711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b3b3fc02693070f5336a3dae86bd87c075903c89e383e255d89cd0b1685424. 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/GXF9Q2440712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4123515c42a0ffa949858934663958b865ff618c83ad55b42ef835436b6c86. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/GXF9Q2440713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366c0bc5ebbfe6361d6d1c366b44fe2a84560dc39f4a75e2b67dd560e87a691a. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:38:00Z), 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/GXF9Q2440714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fb4d623d368ad7a8305b15a4a498f14638ab52ef9aea94db7d768d40c7423b. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/GXF9Q2440715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce5dd4714f1bc0d47bb11d38f51c1183d33689f1c3efbb3ccd8937252a11242. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/GXF9Q2440716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99ac53bd65cb00724466c827d7051f438c9625039666c67866371ac9580ea02. 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/GXF9Q2440717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665ceedc35785c43faed425a6955dd210498aa1517f5874a972b2cddcbf1d456. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/UKXN22589411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eaf9bd9e0f599185f35618a1ea7466da1e52341c02eeb8924991f6d9654019f. 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/UKXN22589412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42e32e7887f04063e55603b5866ba9a052c5dc420c542827097644846a8b506. 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/UKXN22589413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512b63e0ed708965a9a188d443546c1575888f007ad8c675604e938b49fc5d12. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/UKXN22589414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74c3cfcc6deca7bc2f623ccfe60ef809f3ae5acb59cf995015305f1d7fd39b0. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:41:59Z), 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/UKXN22589415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64418c5e156cef53baa08a1ac28f2b6b5d78e75b21d50ce173593e6ff6dba7d. 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/UKXN22589416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25749099ec30fe0ccad8bd224bef68ce9682a6531a92d46266dc30d509478fa. 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/UKXN22589417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ce53d7346e9358a2486d3453116068e1bd8913b9d5393dba9e893a51adc0ef. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/UKXN22589418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed88d471531f16f9ab33b122a7038f9a40942d63972446ac4149a797bd165c9. 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/GBLFP2562883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc403c802b8ffe9bbe19a3f399a814231a4bf23dfd2f2e68a6419cf336bdb0119. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:38:22Z), 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/GBLFP2562884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8009faf6858e04d1183696a01581a373ea0df456ca07822d6de0e70127f58698. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/GBLFP2562885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80b7fccbb853082e5bc8061dc68e7399fa8d2e5bb509ffa8997abbc2cebd30a. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:59:42Z), 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/GBLFP2562886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626c11d2b44b4575a8a52f9d544666c7ac80c0c87cef0a7abe0fe33b9dee2f74. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:33:46Z), 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/GBLFP2562887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac53499340654af0ac065c3c256d4ff5267ea193aad855bf8ef6e96965a7093. 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/GBLFP2562889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff1af6277eed9a23081ae0e90df7518c670efd1adace235c56d6c74b3d01756. 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/GBLFP2562890.