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 0x2747b48250b415b913475199e8d4dc48ae642f185b64e91061c30535a3340a69. 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/530fab4f-41a7-46b4-80c5-9d54351a66d4.json and https://artists.proofprofile.net/proofs/artist/530fab4f-41a7-46b4-80c5-9d54351a66d4.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 0x79aaed51ec7c6f732c191da8194fb7c4ac325583a9c5cb2f7f039e3d4ff5ab91. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:01:41Z), 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/AUBEC2010788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1a65aec771a21d47648c66a2b2bad40e3d9968ace8ac59cd4c980e7ed796a6. 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/AUBEC1939181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93a7bb3653323402865b01f5115b7b3590b98c43ebe1737bea5847ed8a8086a. 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/GBLFP1809185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f09a94cd9f3d0b6d505203ef1b5d29151ac6cb3215c87ea1d49bb68449e23a. 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/GBLFP1809180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc897e1b59e04ada9918f1a658632d171523851e13f1277cb9991634cb545e9db. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:20:48Z), 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/GBLFP1809182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612efd209cc09905ae8d6c49e53d5ab334cb2016a884d035b6844d99f12b891c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:50:30Z), 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/GBLFP1809164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710d2d2ad8f99563a5adfac15e5329b5211959d68def3905bb5ca2d247465e49. 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/GBLFP1809423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0382e5ee81b0a0c07d7f38817c992a4c6bed76450f2ce416fc89ad542ac32635. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:38:11Z), 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/GBLFP1809400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3493070cfeda78e6fb9b39750293436cb8a70b57d0da2e45074c3e622a8672. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBLFP1809440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958a27ba1d7c68f4d9ecf535fd50d0435af2591a00714310d9fad1c4c5ff4c8c. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/GBLFP1809420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7cdb8feea4e26d6bebd3262e1663af689a4b8448e92b93600ced78dbb3f250. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:26:06Z), 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/GBLFP1809460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799de5fa0efc117f4d834be2a412ef4e5a4c2770e8acb9eae2ba57f73d0ae524. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBLFP1809451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ffdd1783b0ae75b15ccd4978334eb23ba3fe1d9f643b945847c9afbc05fa1a. 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/GBLFP1809506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e92b30ef9b58326af4d82c28fd842e110de422e01ca3f2796b8325900691120. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:03:30Z), 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/AUBEC1907862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe9d1104965917b216c08fa69806d41bfdba9d6a3638c2bc0dab79d52a5886b. 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/AUBEC2005402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54594e09958b1d4adf26cc42aabb932563f866b6e4f2724a06a9915bf4ba3e2. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/AUBEC2011287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63afadb2959909cd57907d5d6ba1626aec81aedcc4d25016a2a09c466d76a49. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/AUBEC2011286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6edc1defd755c7ee26187fc48e217731e13d1288cf3662c1561884ade6ad454. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/AUBEC2085220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c904ac215c6de7d06738fd17ef549062772cdb6c865d2ee62e1e33b1c30cc2. 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/AUBEC2187576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ccab6f5825ad917a53f46a1d1ae6f38cb45db8f1768ce9b1e9b487ace39a33. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/AUBEC2187591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87814fb0e63f695ceebf5e2090d63389d8261981ea1d2f06abaa7125c1c7627. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GXHND2576242.