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 0x797bec2b4048a14ec7a529f117311b5c1893ee3c0ec697f393e06f30b5fe39e0. 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/3eb4857c-683d-4be8-acee-731a9a97689d.json and https://artists.proofprofile.net/proofs/artist/3eb4857c-683d-4be8-acee-731a9a97689d.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 0x406f0cad34ef90b6dde223cc8a737869bc9378497e6b71b9df5a536094e01d71. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:49:43Z), 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/SE6QE2298452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4acb5cef11b71d77059962a66a44142edbb172236827465f6d3a5d7a8c9bc883. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/SE6QE2298453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9462204ec5a36e8646a70125226dea7fb7f1d8d90186c1938845005d4d77dfd. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/SE6QE2298454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8557c292db914f13f8cfaf433ee2fa2e18a37cfe8d9f5d18c5fa34613d383bed. 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/SE6QE2298456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42a1e9e78d6efe4b7bf626bcf4bbd2ec604db39447d1ee99d646b3fc1eadb91. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:45:27Z), 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/SE6SA2208335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da61aa5fc201184da3d4e04da78793b0ba7070d208e9d6e8e09ecdf0e7ef966. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:28:18Z), 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/SE6SA2208336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c044e1ff507f1db69080e6ce7e5491702bb6309f7dbcfb593bf6ad70a67ea6. 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/SE6SA2208337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8d1d37caf17297cbfc27cc5ab34d6fcdb496fe6ccb6cd8515b3e9a17a7d984. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:49:30Z), 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/SE6SA2208339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb88322744ad3a02a20e2b1823a11297a2e88f2b32c5d79b54410c89935a21a2. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:50:01Z), 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/SE5BU1712990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d57d18e74160fd4813a08e7e5e6e720dfb26b17fbd60ac2f4fbf0ae84f83ec. 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/SE5BU1758520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf612d18b181e409d79a23a21d7cca9ee413f8491ebfcd6ebd8f7516c9a625635. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/SE5BU1726099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d47dd9944cee18945da4d4b829818e873e732be04a6a6525cb52b675beee3ca. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:33:51Z), 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/SE5BU1738446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594f54eca5f4ea35ba25c673241685c16fc8c01ed664cd641b99a1165496b2a4. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/SE5BU1787106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a00e55183dc3f8c9bf31bdec77fb37d016d75f9eae207b8e5bc0c270043d8d7. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:39:20Z), 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/SE5BU1749617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cb0515cb4463689e9ed24d0108ea416211d5549a87950d10cd984e17ae26d1. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:27:01Z), 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/SE5BU1733055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027add328f2a8edc6ce25fce2bdce9b6daf106e978d7b25f1d9ca11383c9a2c0. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/SE5BU1722117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03332f84abab9277bdc56ae64cc25de01a294ef37bdb5d3062ac8fb17ef497c2. 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/SE5751818579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f30fc6fea583dd6c8b299f8cf114f5619407fcfb4821f93214f4c9c2a14a79. 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/SE5751818581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487233383e43e391e87c2cb71e249115c9a048cdc6cdd1a5ab63c0bf8a8d4143. 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/SE5751818582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f59dae4c6e43dbe66cb16736832050489f4f560cff10a687391ba0985ba1b7. 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/SE6A91836502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f4f210aed42ed735ea23db6b90ab8ab4fc937b1f58316ca1e3e0522dabd989. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:49:02Z), 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/SE6A91928200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0d0ccc752fc6395c0005e5a06a4cf3d73555e39235d9b24a2ce8499ea42104. 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/SE6HN1973420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ceb317172217a42991fe96ffdcb129b73b18de101aa2b7dc7aa96137c5c8f6. 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/SE5752032277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5e584cb918cec760b605c3ae6e17d1ba8712f5d2b2b9cbe572e63211da2661. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:37:29Z), 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/SE5752092501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d70b05f38320f835f9e65fd276b8dccbc7968f2680a56252053e824b02d0bfb. 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/SE5752092503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46cd5338e04fa7d5713f9bc590a7a24e5b7b29ae0de521675a05072b292a97f. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/SE5752092504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90eba545cec1cf0fdd8ceac031bf13085c29fb3ef505c969d1176bb3609512ac. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/SE6A92046363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d4e11b9197a0a2b7a03dd0469b6baaeffe1e14fdaf7ac15a26fd0c30071815. 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/SE6I32167887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638cf1284a57015e1340efead91b55f282b75cde116350ff70118f86881a235a. 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/SE6I32167888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fa78765952b211fac118761237229ade4794724f9971865bc13c19e6898ab2. 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/SE6HN1966982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc242512c07efbeee6f0560dd7ac04c0f55c8a612e6c1f6314afa9eeddd8ea75a. 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/SE6I32167895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f37b69ba9055508dddb98ca3c3b75c8989eae9d87193377f22e79ccd024fea5. 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/SE6I32167898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6710c284a7446ca2a29fe2e4ef52883965d9bb5a64251108630e98d7b9e98b2. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/SE6I32167899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fc303bfad214246653d88c7685834c4622e6e3d26a61982f11c8bda168639b. 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/SE6XW2302991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afd64a7fb219ebe6dd8467e08f7beab060fc7c2ac799d98fb1c0d4c590ea5c1. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/SE6SA2395789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341c4e43384adebd5eb32776fa0d4af0aa3aabd4cfc33a4fdf996670c056e0e0. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/SE6SA2323739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e86c2493356341e6a1bdea80d2f9219b30b6142cd5b4506ec4ecbd7bef3e939. Chain 2 (Bitcoin): anchored in block 957013 (2026-07-07T08:31:11Z), 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/SE6TI2342769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eac8dfe564687deaa63f8f62cf1de0d16441b8c497d0ecbc327db3a58d73068. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE6TI2362071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3520ca4f913ed8e953a5b5d7e9daf4695e4d51b04deba8f70f2f43587628069d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE6SA2385458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776443635c8d4457d70f9447d9878c5b14551e1e32a7d5cd5cd10ec86bbf875c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE6SA2391506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e56b7a266ff2b73ae6af078fe819fb4887c0ba3a3e841e9e4101b3157784f1. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/SE6SA2388607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd09eafd5c06e2fd4891923355c746d566b6ac24aa6122a83ae04aff8c650a12. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE6XW2303324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e0364f07f862484eed8873af65717d34f4f6662e6b60d9f1e889a3e8100f79. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:31:39Z), 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/SE6XW2348863.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef91f2040d6d2076ad98071e0f0a663ab31fed349da534b09499b1212adbd47f. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T15:41:35Z), 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/SE6TI2357958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb093dfaf2051bf642508fa25e068ac1514f4fec9a991fa60ce2cf9ee52d16a8a. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/SE6SA2385682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854e0dce9ef053606d7bfaa8a2273969cd7501d5347b8742ad6d3f58fb15a846. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/SE6TI2395070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf136057b1589b871c7f817d35f744d60e9219da189e4b6102c804fa1cb172a4b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/SE6TI2387529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710b77c9b1ebce5212e0708f3fbd4e2bb19416ed43439837fd62be03d88fa201. 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/SE5BU2426078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e37496ef004f32826e80f021febfcabe68fab33e0f1728ad23a21d0e3fd421a. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/SE5752416558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f1416706e7b91d51973cc477e373881ea750f0199fc072c4a986209a4144a2. 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/SE5752450765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d6c0e704835f6fbc7fc1e93ca6f8159ad5eb0006342f0defec3cfc09decdc7. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/SE6I32453370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf6c59df152bf8b3c1cb455690c0afb3fb6d2c7999ee889408b9e5f036f43de. 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/SE6SA2441095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb860d4b3ed5487ec8542dd81921de9b5608fd592e408709fa5978cdde15d43bc. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:22:53Z), 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/SE6SA2483211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732bfba6346f02a94c4089950b263ebca33faec59cfa4e5f71d0c7adbbba1fcd. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:36:08Z), 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/SE6XW2423726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b83d60c1e1bd044319e59e43de376d0d9319e061abf8c45d9bc40a3a1f4e34. 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/SE5BU2549200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a0eb971d696533559f2f4a73a1527d00478b49146d3cdb81118d0ff61c09de. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MYUM72100613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a0eb971d696533559f2f4a73a1527d00478b49146d3cdb81118d0ff61c09de. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/MYUM72100613.