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 0xda2a3a99c6a7b25c8ce46784dc58d314f4289e3a74236fc00c475f3303a67e29. 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/788550f2-2e0d-4477-b4d9-0c74c9b6533a.json and https://artists.proofprofile.net/proofs/artist/788550f2-2e0d-4477-b4d9-0c74c9b6533a.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 0xb00c4084aecc563e662b3f910152572ec717ca9286700519e52aedb844517ed4. 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/BXCND2101723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b7b1d88ed7beb0d1d55f2fb59824b595ae50d50824b6da12a9ce73b346576a. 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/BXCND2203158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449b24e3e0ee8a62024f1762f593d9d5be60d53d5c358b97e3d0b0cbe3833edd. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/BCW2K2300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785a6f69c2ba14fd390f0782ad4958548c3c2c80626209355b99609b58d3ebb4. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/BCW2K2300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01b3c4bb1637db95c0010e8e5304bc21d258c372367fc30a025e85296d9146f. 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/BCW2K2300068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8b291d44d859a049ccae92353cdf115e97ebd0b22280497c390b12e1570348. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/BCW2K2300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7f1076e4b2b2d210df3ecf50af7495759162b79cdd4ff26b9b40a0492c67c4. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/BCW2K2300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcace8666ab70bf6c293d7eee9721d6b6c931b9722be5c5b58d9eb04ad4d766a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:18:41Z), 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/BCW2K2300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6bfe6c52d4f29c257a54e9bcc79c2cc74ba5abf104109381720304e18065239. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:15:15Z), 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/BCW2K2300070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38708b224755229d17c5256c3b25b49473b4d48fa22222d8e8598514cfc6756. 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/BCW2K2300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf42467205b507d7d481fceffbb6be0c09e503a6aa59fbedc92c836caec5bd67. 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/BCW2K2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38b867ea38a6ad08f84215f5c5f997cf6045034f9a36374d5c1f00fc2c86a7b. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/BXCND2400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ca4e2291af05d7c1d79dfef0381f1bd1bca05f711730d5209029536fb808f6. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:21:59Z), 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/BCW2K2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc54b532998c053f5350ffc86ab436aed1e2320b2bec4177f2cb416efa4c80e. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/BCW2K2400072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1543035a4d487147d3a461c4b6ae7f7638cc0105d9f2c49b61b7b5f96ec85c0f. 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/BCW2K2400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc228334ca1d8c6736b5ce27c57a6646e97c77e35c03d8098425749a587b2d8b6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:57:10Z), 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/BXCND2400953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238f48b514b4e3fa3bc8ae78dbb1bdabe52bcdff57990ddbe439ca3b7cbe6a00. 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/BXCND2400954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2f1190358b162cea544c8e34afe62202af1872d824b907763f3299010651c5. 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/BXCND2400955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82082e8cd73ba1061c97402142f32f326c92744462f72670fa9e570a65f59f1. 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/BXCND2400949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97dace18917d929b98bcdac77a8d80a606534ff098cfa8493f34d13ae07a9b5a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:45:54Z), 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/BXCND2400950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abc3e325668f85ea688953f91fdc32678d75216489109befbf2525dd41003cb. 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/BXCND2400951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5056109a3486de90ad4e5640c47c8546ab60762185ca03116dacf84dea244ad. 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/BXCND2400952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffd77eab8e2855c118dbaec868bced61790fdafdf164786212cccdaa7a4e2b6. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:57:57Z), 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/BR03D2400188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40386bdcdb3baf0a27812678bda9fa01dae55117951a238407d1434aa2180b3e. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:44:54Z), 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/BR03D2400190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9681e652bb0c0520a86c641e6b8fc376a2c8c288644060b4c3fe6f774f9c40. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:28:32Z), 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/BXBMP2400127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204929879cfdec6f2861ceaf420dc7edb0f2ab84dd0407cbd56179eebb69f012. 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/BXBMP2400142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85464b768c11c530b5fd083ed774b1549eabd306dcbfcf390c830bb8b245ae5. 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/BR03D2300852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04fadd5e8660a9c85aa3a81201e7ce6719c90451de0b6098218748d72aa53b5. 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/BR03D2300853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb48bd875bbbab160beb55c4e0d527398a2988865451291807a89bd02435dc4. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:56:27Z), 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/BXCND2402876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0963a4d2ee29a6d12aa274c9e66122539c8b1dedd26ecdd485f0221cfd784d8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BXCND2402875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0785f718f0ac4d213d598b40af28abf64b7a42a5282060cd05ad5c5045c18a. 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/BXCND2402873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5670878c1ed5113900ccfcbf63344eec89692763729aebb6bf4cc2460a496a. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/BXBMP2400230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb871464847217819c4f0f243eee55d602024049b2a60b07ac79e87ba8967e837. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/BXCND2402964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac32191dff487db0311ee4454b876cb273a8278004d9831f1b681e45abbcaa9a. 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/BXBMP2400241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e90c32749740ae4b173951112a36a12ce8a12a4e82d85f72dbb2f9b210f0642. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:06:12Z), 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/BXBMP2400227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec85c404e8e5b62de8e735a55926ba4abb2faaf06dba53763add1a669ea1b8be. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/BXCND2402963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c270d44fdebfb230f4adc51678d707e731e6470c62076ce9e915f8dd3246c2. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:59:06Z), 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/BXCND2500585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0388946d6a3032b54c068bd7ccc815169715675d6df1caac1d5067d7bfa542f0. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/BXCND2501498.