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 0x35f5586eb612a1c5bb564cc895d31573ea801cda9eaab815e22bc0300d4a4dba. Chain 2 (Bitcoin): anchored in block 954131 (2026-06-17T19:19:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d516d5b-293a-474f-aeb8-5cfdc9f570df.json and https://artists.proofprofile.net/proofs/artist/7d516d5b-293a-474f-aeb8-5cfdc9f570df.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 0x88be5aac57ac17a51d48ad075ca92dc8fe431186e39842ed0d943c81c4072ee3. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/FRX282507850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b467d1915a26c137f43b54137f8bc2a7d8aa5a324950e769b576327520eebae. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:44:26Z), 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/FRX282507851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2622af6ad6f11dd2e68142e78cc5c64365a76fa995af682184cfb6a1c148a9c. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/FRX282507852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed4fc2fb6329dd63d64410427e047296804544ff30b5f8d053d00e367aa154a. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/FRX282507853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda34b2c6a7297292c4aba8494e579dbe341ff3dc88c33ed6572cf554da59f9b. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/FRX282507854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260c0a270a302914f5c85b79321986f9d3bf9c7f90bf2b3bdc3321627e82f28d. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/FRX282507855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451700a72fa18b20f571e0e4e35648bb86429b4231bc7a1fafb223d3fd7f1fe2. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/FRX282507856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441f3feaba73f74b7adb205f882a9086028ac6c47189baa8ea76c9701b1d2582. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/FRX282507857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c280d9b8c26699927b3d781202774b3aeb1242e5aae3873c0f75b61c2d1be27. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/FRX282507858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9ef1ac3bd5bee2cc19b1a9956e29e3b1d06507094abba2a9469a2516f620ce. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/FRX282507859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8294eb8e82478128f236b827204feb697f4f2ff6abcf834e16cdd2d38d305ee. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/FRX282507861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9106dc5f9d6aed900883db0015debe2102a972d7fb016431d022516bcb5efead. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FRX282507862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e9f6f46c61511a91a4ea83a23f706cc86a935d3b3118ce0e15db42b0a2ebb9. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/FRX282507863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b81fd7a51eb079137e85f2b3bebc64ea963a57bde221d818569753c62c8e93. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FRX282507864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe69f7964a25e5b795f8e732803bc998b5baad9d5419e69de2c23a66e8b6f669. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:08:30Z), 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/FRX282507865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb490dd728553e8c8cef18dcea78f4d5f09bf309958b004cf7134943e55615aeb. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/FRX282507866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e928ee3a1dda9bdb21888dc15c44f3304d259e8e59c6b382e563ddec315e133. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/FRX282507867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c92e2ff6e81b05f331a286d309de8aab371931adfaf161a7d57647bd5fedd5. 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/FRX282507868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e2fafb3925c39f14f91bc571542a62dc7f812ce7bd3b11619993b5e98df4d0. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRX282507869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ded2f99241253ec7b306786d28dcc57ef874e325f74b2bf3e83edfd3509807. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:19:40Z), 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/FRX282507870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7161263710bd7bfdb5970a7bb3439c8810e2a931a075fad02140d95be0f08f0. 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/FRX282507871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05771aca891fcd3a935df453ef7010005ea3107a5e511e206a70f259378338e. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/FRX282507872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c7e42a486ef048b36205901e42ae8b39e45b8397646cea941774a9dba1704f. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/FRX282507873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069e7fc0de0823517636174b4741f6565b2bc04877ea6100c14a92d9db47ae94. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/FRX282507874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b439afe9eb610adca1240b210e48953438393e8fe3f69cc1201e0ff48c1ee8. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/FRX282507875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9720eae1d466a0c7af048c59e088a4d751f85fd27af9b5f5d6490d14983a8885. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FRX282507876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d385f9575a5e88836794eef5516060b2712ff235565f49f3122d047fce2c7d4. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/FRX282507877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6ed5fef4f2ad42063cdd364e461a3abc758e5d81df0870aa7e446cabe75875. 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/FRX282507878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540021b876d301f10500df7aa36513ac5194199f7292798ff86231e1bf1d32be. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/FRX282507880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2fc84e4dbe3b9ebfeda7afe695cdb734402e0b5e21a0b3bae100f0c3d55fb8c. 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/FRX282507881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff57fda1b10ecab3bec1d6523d1809eb2ce256308ac570795c87e074c88b3945. 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/FRX282507882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980d895a3c39a49d8c4a8c6af9a194b6b66f61094338d45d3e8f4768df3da0db. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/FRX282507883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb4a54cba1b165f1409fb6931f7b0226e9d222494a92c399233f3f3f981c30b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FRX282507884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d794ed48a058174a78774096174a1cf4589861476223b631ad87cae384e880. 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/FRX282507885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6430830f6e618954c1251af778877fe9265ae35cf957b1b6065ed3e86dd06da8. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/FRX282507886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166feba416d3ea669d4b44f815e0770d52d53ef5a4bebae3872bc9d5d1eb30e9. 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/FRX282507887.