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 0x89c84dd372c9ad8692de8f41b840d31fbe11d7a321b7bd49837c9a8471685b0e. 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/c70922ce-e133-460d-967d-9ed46e558c34.json and https://artists.proofprofile.net/proofs/artist/c70922ce-e133-460d-967d-9ed46e558c34.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 0x035ce0428c657d54369bcd91352e2923c00eed8a810c3f5562d0d4fabdbe1097. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:07:04Z), 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/FR10S2354232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03eac796e6117c3c7ac09248dd4177d9baafb37fb97bedecdf16cb8ceb7c7618. 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/FRX452260363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b4ea51cb5365b0418ae4fbd2624f77a83243ad12ab3a07467735fdaec6a4d8. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FRX762217431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a653d80ea1e2393ed28fd4510dbdb09105ae836fbd74cdcb1d9e715e9dc97f. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZWBE2254962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25532e01faeb3b2cb300c8ef868ff13ba884c38e87175d2acedb777a1c56b3dc. 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/FR2X42313686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aade55109881751a2333c3d2e19a2dd3224205a84a261213fbbb24734621fb8. 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/GBLPF6746582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc7fadaa3578b0ae6a9910a6c3f2a8ee57f40687a23022ffd4354f903534643. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/GBLPF6746585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14869dddf60fc01db873d9c13b6cec95c93f78923ed3d95627edb6b0ace001b0. 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/GBLPF6747481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df0e1ec9cbefdbca55ff3f496c597cd3ec3b422cc273d6cf4021d0818db54cc. 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/FR96X2313769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2270466b75a87f1787532fb20496edec962936afbe966e9ae8d3719b0a5e04. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:42:21Z), 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/FR96X2393278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ce0959bebeaf625f8ae8ee7b033b22a3dcd01cbfe1c25b60fa7adf58a98ec9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:08:42Z), 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/FR96X2391840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64c0c176a1210e0f79620d5e58f1ce63d87ea727785b1d414e699bcf3683a1f. 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/GBLPF6756355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c1b0348a1ae59ea980b022145935e91a0538fd3ae1bf698f57a9b3e4b241bf. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FRX872309956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c8062cac879bf851f0b26e24c9aba0ac6e7cbb3b3259bf30b405118ab5cde9. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/IDZ771801760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ccbf0dbd08444afd7b0576fc09ed2c2ce8581b672fd9915350cbf11ac23bbb. 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/DGA072319809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a5e09e5a6a210b3c9ad7b41b87b08cc33a65c4f0f995b620c0a07604583139. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/DGA0R2318539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c3665ac544ada7d1a6d6e96f9e6a61cb93b2e5055ec3732c83ca87783b26a3. 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/DGA0Q2387788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae96f77220751912c31e7da23e5053aff40fbe11f50f04e6c2db79c3802d077. 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/DGA0Q2374879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86388fa02ddac960bfd734b8e8ea9bbb90253142ccddc0d2f92962c26eba6a4a. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:23:34Z), 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/DGA0R2345047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8932928de8c7a7de0320c3fbdb3a3e53bed3f3c6ff7763f008fe55d67b86aca2. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:31:28Z), 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/QZYHM2417575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806a07bb362ccc570db7c1abc02f7ba4fd633e07a15356d082761af240a18d18. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DGA062435109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5693a4ba5f05b6f8e89bd1855d75bdeb4281b5457966ff4cae50c7a9f92783. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/IDB772110394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9724d4da86527a82f934dc1c8f68857c828bfea0d0410bf72023bc3272220201. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:42:22Z), 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/IDB772110831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4dc0e05fb88beb06fc548b412f043bb663a9be54fb86ea28178c8673c1ccc7. 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/FR2X42576639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdae5ce894a07fd49f1e6b58273c0597d87ac8d20fb896e2dacda1942c66d026. 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/IDC012502064.