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 0x56e824a7a026d621fa4ded3397143e06d2f29801a96247800319583fa653cf10. 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/2e2be35d-5a0e-40c5-b362-477d9503e710.json and https://artists.proofprofile.net/proofs/artist/2e2be35d-5a0e-40c5-b362-477d9503e710.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 0x3b72592c7bb48f26a4daf42d5526636f86e117dc280520f49460e99a989e97ba. 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/NLS6R1867992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105d4c4fa485534c5fcb949e505c66a3e1ce2c7950c65200f57fc6e29ef4d2f6. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/NLS6R1877023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0daebfcd3c41aa36feed2d5a03f6bed2d31488cc9d35c1b7e4399ba23d9132. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/NL1AP1906445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a0996eb938f47cd5b63669d105cecae99259b2fbe50517aa473ab97a322d1e. 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/CALVP1917291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb454e9a08e188c2ac37fd75d66ea038d74aae693000779fe4c6166a812b8dfb5. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:43:50Z), 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/CAENV2087216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d529307ca0791567831584b72fbb03d04367b2a835a19fe434fe3c7db21e1e. 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/CACWV2222246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250a8c77ce66b9cbcc89f25492c59950b2d0ee2fd316002748a5e6abac24621f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:01:44Z), 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/CAHQJ2236722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fd2834b6a2bf3dd30c5621e6900de3b1ce1c8751d8cad9b59f231423aa2237. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/CAHQJ2262162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2735dfa39661c03e33af52b55e53d7a556b2588204218ab2e1bd5164e983b53b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:02:51Z), 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/CAENV2204959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad52a8d0061d9732db0d48ea1b959c0a66854c90389ff0bf94e6b6c586b8e5f. 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/CAGOO2224530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67302f3771a995cf35a4ec696e76fa4587cb496b8b6af311b1b1803bcbd1955d. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/CAHQJ2355742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615da641360bbefdfa9faec4fbe6c89074ca9059a0a40f973d614407efc0cc21. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:38:48Z), 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/CAENV2304502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d58d24dab742ebd9a54377baa6f1b0ffeb97bb2449b893d9f31ecd42609326. 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/CAENV2322858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910b5f5e2353ed9ebd7ef11a6692c0a786e3205e64f85007cbd2d40be0186e6f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:56:15Z), 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/CAGOO2333144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0492f934867da5a3fe55f148abe60a4ce142dd9219ffffdce3667efab5d0d0. 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/CAGOO2352473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1e06276987297a4f1129253d85233f763f7a35649f69e1e5fd634810bbef76. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CAHQJ2424504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c5e59291a00a00ad7ad26e9dfafbaac6ce13bd10a57e7af2e9ad9a9ffb9a16. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/CAHQJ2478204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0baef36b207aeef66187ac192e22f001965ea8590765fb48c16c89bc44a0497a. 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/CACWV2414240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e23062bab25d6c578d0271dca605afae5cf808fb337c57578b02c506e6ea78. 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/CAGOO2458054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55998355b1cec6421226fddfad1c41318600d938c9bbc7ef0fb9df80d259e2ce. 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/CBF8B2414363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf7a5271a17714c9d500fb4c89fa74fc62222ace0cf7774460b34e98fa025d9. 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/CBF8B2471995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77141482b18375ab10d6b3f7fe5e1be658853f151edada7eb896cd5ff2a2f227. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/CAENV2566381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa521c9d993a15a26c1f2b747ad33cd48ba6dfda6ba57ee30cfeb35a2205b5f70. 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/CAENV2572898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5c59820993ba6eed5dfc26eb66884014fbca19c39328c753252d8d5b593d72. 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/CAENV2593525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2fcd9aa27358583f895adf4bbdbaf0c1cb6f8342ff2c85dc8bdae5fab7321f. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:31:41Z), 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/CAGOO2566259.