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 0xcb958f955b5e4bede5fbae0ebfb63b4aa29342bbbd4eb7826e8d7754bf6b26c2. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd495e98-cfc5-419f-81e1-a0479ab47eab.json and https://artists.proofprofile.net/proofs/artist/fd495e98-cfc5-419f-81e1-a0479ab47eab.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 0x551b8bcc8791649d7a1780bbca3f81c4e4d813fb01ac722c81e301ad92b05595. 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/QZPLR2507733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32eaeadbcad75aab695143da07e09f2a5371994e9a23f6d262696072c7ce92d5. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:48:06Z), 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/QZPLR2509509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37549d3c6ccd63e5a1914795c29be8f5c0090957265c2e73572ad324e4a06712. 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/QZPLR2509508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df9a0bf869da728fee5666c6880051c44b8bf9ab45ab31ff5ceac4767fe3b8a. 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/QZPLR2509526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8552efd87d9afa468de49b6d2149a334365970d6f8a7b0546115f18186dca2. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZPLR2505732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f760edacc5573cf8e63ae56f6ad30a6499ab50726f21abdbb63d66b9836501. 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/QZPLR2509528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2217b9eb622059f74dc7eb6ecbb829ef0a9e9a93c21ad1a3f273c561bd381b25. 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/QZPLS2541799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54792b2d5117d773b1b74492e7b4e0c58d5d0c83a32b1c15e942d779dfc30ab8. 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/QZPLS2543238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573a2c04416896e3445be18873234bbaca1f5d172b5241299fa95b4f0c29ab36. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZPLS2538826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1ac265a6e6dde7e7de4542513b975e6dd0d396a1ce1fa89263304230856ff3. 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/QZPLS2540337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873d462a98dc682009a647592206778fbb1ede6af8f153c35f6ab61b02bcecc8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZPLS2540336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8a5a1c813e29d3a554b56547cc44d582741ad25e6b7a4b97baff5679971fae. 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/QZPLS2540319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191bfd64602dc0860f53dade94738d7951a49e2e7921d2a5b1f5630623236e03. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZPLS2588745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550bf58dfba767be6ee525e6be5d49676b4e5359b9351cdd718ee7fce2bdeb04. 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/QZTAX2573617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c223eaca77dde9969025abd50f623af6e0a1b2f089bbfcd26a94f69e2055f9c. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZTAX2573643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9e310318d301ff6fd7eeb07098786cf44b919e614f657c5f448c19b16511b5. 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/QZTAZ2594783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11f3f2f00248a722ed9fc0ca6390b5d46462d80eebb488d8bc78ba1a8cbef3c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZTAZ2594780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9b3b0ae8f032da18ea17e83ca28fbb9babc49ab344490801dc05047c690214. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZTB32596709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e56d463c15b2ce58fefe0f7e56f8d55cbb31ef02b40592e83f9e91cbff2b1c. 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/QZTB42503700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd618bc6a9de917b1c4ee3e87c8f9846b25dde04a20dbfc9e28bad095553054be. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZTB42586293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa76f8ffadc822917de0e27913bf190d968113e4a9daab92f70758b623359b6. 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/QZTB72551350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc860caece76d56f904f970592354c6bc0a0a1c1f980c3650ab63c71477b1c08. 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/QZTB72514995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019bbab5eba8b96bafbeb6dc0b2d929a105fd7c81c367e03d938f1061019ca80. 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/QZTB72551354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ea389a4257fae81dbbf7769d5ad17cb1c91e7065e67cecf17a36b18162a02d. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:30:57Z), 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/QZTB72559029.