1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x43e8334ec00eecee5ba3d27861fbbb52ab1b6ffa25ce20aa4cc00b68caed7eb8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23191937-f0a6-4135-ad05-219647f94ca4.json and https://artists.proofprofile.net/proofs/artist/23191937-f0a6-4135-ad05-219647f94ca4.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 → block OTSBitcoinBlock must exist at that height 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 0x125b221879d514864a74bb7d8eae16a2e4f222c9d7321f4b5bd86f558daa70c1. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/IELOI2182239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531e7c6ec76d4127705e48793583865a41458ab1385b581b418165b3a7b56bd6. 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/IELOI2181640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fece461b247465e2c22f4d82be9769cb951d899f563bf5b5ebcbae53e8e0653. 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/IELOI2224677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c78a96444557d3249cd92a4e964b69d635b6fae2d8a6123c75250f2d9241a2. 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/IELOI2224744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568b97bd79a04efdec77fc8f7fecf05a587309a3637a7c98ca52066d5fc10ff7. 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/IELOI2224747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c9edcbf245c421cefab3c7547c12da249640a7d51624c2424ffa20e567d7ab. 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/IELOI2224746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed63d9e4578ba4a4c1159b381ee9fd3669d048e64c27b789ff056a6b57ae2395. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:58:44Z), 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/IEWGI2335050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd19a11d61e2dc2115226aeaf526f7eb1e45df2c76f1f73cb8bf62d6bd0edfb. 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/QZES52539471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251309e9f9f8ecff325bbc40a1681fa278dee7d036843a4c0856840fc67dec2f. 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/QZES52539474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601e41ba079f2a9545584d92214f1d9eeb35d93abb62d54d5900dd74cb3992e7. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZES52539476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d432dbc0491ff9491665742edd86c0c6c1069824e5c9de06753fc65ec3be3f4. 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/QZES52539478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55922b80a7f7fdd8b63dcc5d25e33a95a0a7d1b4e56b858a6597686e47d0e5c1. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:00:46Z), 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/QZHN62514648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bedfc83f474c0eee9bfc4a52ffe998fd1cd299ca87f4f891a05023f8d25fbe. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:26:56Z), 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/QZHN62514649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48506a0c426be2b33e85d30adc419a38e2bcb7383d51e19fad38aa33437808a. Chain 2 (Bitcoin): anchored in block 957714 (2026-07-12T14:35:57Z), 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/QZHN62514650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080755bd82ffa463e868a5366a9f31a47d966e0e3005eb4417b0ecb5195c2585. 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/QZHN62514653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267200474fc3df6fc558c97ac78cdb3d26d706524dfe423b8fbbfb4f48d72fcf. 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/QZHN62514654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213d2010e083d5c4937a2211d62d0d1916499201f4be3af81bc29abfefbb8da6. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:17:24Z), 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/QZHN62514656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32d1d88514a091719a2c46e1cda76aafbcd562e8ed49168b7ab9b3bc6c4406f. 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/QZHN62514657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb977d1d150fedc7c5758df56f22e8e2ec4230a43f8bf6676d9e01c6cd8301a8. 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/QZHN62514658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b0ecaff7206540613b76ef64f4b7f32ceb7a2a9b9b16d501a8166164b7899b. 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/QZK6N2503704.