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 0xe9f58ca1178ae92bda7bc19228fcd6b8a1aa707d507cf2091ba2ef72353f3f3e. 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/cb38c889-a80c-4427-b58a-6a4156f17a25.json and https://artists.proofprofile.net/proofs/artist/cb38c889-a80c-4427-b58a-6a4156f17a25.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 0x1c9457088c52f6252e77f36069427c2857c82644f0286d8e269f385eecf9a9db. 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/QZMHM2243954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed868b9430f7460f6f8269b2067be0b2e9f64f559441f32a8d2d0e7e6ea1e94. 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/QZS672288476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7f9af57b1239000d5b472a946c7d09617c271d77b06dff328a49c9e219fe15. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:38:03Z), 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/QZMHL2241146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407da1b0bc6b14c98587cbc5b36ccdb01b80bff38a1eb0b5b1d5dd151bc7c634. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:14:59Z), 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/QZMHL2290369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19fdc758d2b77771f03aa86ab91737ecf456266aed634f0638b77daac34549f. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZMHP2349249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a70c7be7cc01f601494a6c874e28683d1040fa7dc1dc8c48fc61926bd8290d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZS652363200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb903eb35893828cef751e1f76da710ca96fb1a237fa03308a9bc2d040d94ad53. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:44:39Z), 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/QZMHK2352371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c1acacb8cab7cf110b93bded235a2f6aae957fe2aa28eb7a32c379c4f9b627. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZMHL2316387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96624788239d3c84db34e89333d5eb68ed112cc4c30b3f1273f0d1a3a1f7919a. 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/QZMHP2364213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec51e094c5084e42229e5d658f92351f0d4b2cea52d20432f9fc683347b11a1. 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/QZS642313976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4df95f448f05f7ef0c4adf1c417a531cfb0121d90a303f7b7c0d50f349ad60. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:41:13Z), 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/QZS632350425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff50cf75bdc16e04f26c32f5601d75e8a40ec60889d7cf127c94642d0459ce3. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZS642374358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00895df741ec7f11995ae2b7432c23d8096cc1b8e1229ea44ab60fcf4f0fd01. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:31:23Z), 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/QZMHN2338540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38d3a68ba13401f10b67cf9661ca36b783d99eb817f905301e985876c605b74. 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/QZMHP2378946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd2615786db08e9ec6b29930d69cdef8e9c6e1344a80ae2f69abb9b5961d3fa. 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/QZMHM2301224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ccff52bbd4eab39aee09baadf528b1e48fdec24a61485d467eb1324b266e2c. 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/QZMHM2269039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ffc8fe20b83d55ba22b459cee5a308833514629775ab4e5982c36da35567811. 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/QZS662240900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fe72fcb58a9fc27e78775b55ba6a6d32989dc1b6b9514bc9ba12ae4b35149a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZS642212324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81171650d7038a9d07c0c0e274ea22ad5c3c392bd774f41144413e2d6e30f984. 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/QZMHN2246407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d09d5a590a3c1c11bb6fea92b46f4088f0380c8c83f04f59d0283b814541de. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZS652298312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ee73c34c8326f349d49a763b5d7e7c672066968cc6bcf602d85bb06300ceed. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZS652267295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf785db19505d6b5940f3e4de4cc804b317a395221e10dbdd42d8c26f99d4360d. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:32:44Z), 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/QZS632292440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89660373a573a6c44b4aae00edaaf4a903de14729844f9c978932a6e7a381816. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZMHK2248805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2da5627768f451874fcc24daf69ed871855bcaf1bffeff1aa516a8876290c07. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:52:36Z), 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/QZS672299392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bfc6fc804f62dd79445e7e498705310386d688fbdd531c11335b4f8f92aa49. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:22:09Z), 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/QZS662405421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d473acda1874f44e993a870cd9ca419fa65366f3624371baf7b24cda5da72f. 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/QZS642401126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e884b447376d3cbec08471d39291e4ed429ace975d91801aaee7729bfb2fbe1. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:03:40Z), 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/QZS632406244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ff67a3f2d026a66311faca7b9b5c428cee61812ebb0e02292e255e4092e51d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZS652443948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81119bf5f2449fea1e62bf6cf925f637d02a49213e054b81a647ffbff5675575. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/QZMHP2493582.