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 0xe54e517b4b82092dd9520c7a688b7bb1c2b30b4ad9613d0dd43b38afde179b28. 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/ce1322ed-e28e-4355-b77e-72c89f3821df.json and https://artists.proofprofile.net/proofs/artist/ce1322ed-e28e-4355-b77e-72c89f3821df.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 0x9db977d2202d7b8d674af5ce7b22dcfae8b02f6ed90b1e8feb788cf570a96e71. 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/NLRD52010157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e84eb8a2ca661ee47670bead92505823941b860b38602db03bd5d267c75bcbe. 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/QZES92182258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace64e4b3d2beb8b3971f013e4eb9102cd48da8dfbefba098399544ca17e3d5a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITD3A2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9981181cbe1c2be09d16d0f4448745c79996f70829c91a82a066ecdc02db6a3. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/ITD3A2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5beea0ab80c368380144ae0f9f1674ebd687c288f9db6c09db4a51a73b345b0. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/ITD3A2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccc55dde02574010c23e81f82df3bf00d65c6008be138164b3ade2edf6ffb72. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/ITD3A2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4593d8641aad776e9755bbbd93097d753a48f45ddab9d12e172ef35fad7c93. 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/ITD3A2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb9ee5e293b52f704f9c52b90d75e2558c2f8b2b9ec5d4a639a33eed3e6b8c4. 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/ITD3A2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62b0efeee176926e0bb77a7da75f5e4d99e8a11704447d406c5f7387970dc20. 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/ITD3A2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7f03ce3ef9dde76e4749efa8f8a7992db0e6e15ffb46568ae644ba7f05c21b. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/ITD3A2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369f78b6b5d9fc8a8550bb9514699d50ce77b41860ba5a739fee9062393c1091. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ITD3A2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c83abbcb781812588f14395f3f840afdcf70a97f0fba4d3594bec7f6e7d3cf. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/ITD3A2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd1d50fb32046a8c427bab024b2b4dda69e766f199e17db64297dc1f4f66d0e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITQ002300651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7374802b7ebc365fcf624370488f6270c928874f065862173a10a43708903caf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITQ002300822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d35f7a8e8d452804e438b8c414f0261620c1fa7d1fc604a751338c9147335e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITD3A2200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60bd301e6a026e0816072ccb91ddc8f0250d3acc5a154e641ec33002e00611aa. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITQ002300823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06220a632d1702192ec04bd6a919d2caa336f1804cd7499928ff5a968098fd5f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITQ002300824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1325f22f5ecca1e3a869989fcf34b0d1a4010e732f691b322f1496986a8d2bb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITQ002300825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4a12551da2530f1b37f2ab90b9dfdc51ef9e560193d530595a9a8c630004ad. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITQ002300826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e12935548d7f087dfb9c6f5f6268c06a969342ab377838f98449d4cb81e6f6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITQ002300827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd1d50fb32046a8c427bab024b2b4dda69e766f199e17db64297dc1f4f66d0e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITQ002300651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e16c4177540a6e353be13bafe8dc022100a419c17a69188eaed2a6f15521132. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITQ002401347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79649fff58375aca9cac04c57d48585c2ee5021fb3bfa9dc96bc3954bee1cb8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITQ002400291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd21226b8d51c27dc1d9426b119c5be7a04279407fc6789584d3edd3bfb3bc7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITQ002401348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaab3d0b1fc479b5e252e8f54a217eab82084c4b84a91306f5527c9f51fc5621. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITQ002401349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d82e5f89c8db0fcce867ca1f6060942384083fd482a0db5ada88fa100682834. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITQ002401350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7776e1364651e2499f10f4209eee42d4c8d75dbc3f0470a36d432769b02d10d8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITQ002401351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02daa6ae72cbe63f11533273005937c457cf10ed4077ba44673a7dd736eb41b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITQ002400366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ea5656b25e8ed658579756af896d30800697b6ea1bacc6e3b1139d8b9a587f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITQ002401352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ef9a73b428745648ef64640abbeb2205fc5c2c16b9a0573967cfdb77879399. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITQ002400677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ddf20d80713b399068e35be961e349510ae4ed8ceb309e4e9672e225e16b1ea. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITQ002401034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cfa0d04cbeaae7282f08d1aec2f682e15d9857f98a6edb293867498c713509a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITQ002401353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf004eaaa0b3b5743a462742b54400d461de82886efcaa211b60f38d09ffde69. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITQ002401354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe888e147ef0d22c320f2a558b76b78d8540577166459efd2ea560a3e242817a1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITC6Q2100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58262c8a205bc001fe780d1c6f5a6c2f7ab35bf7309573c3026c0492eee97dd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITB002100411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9fb203f844fe4748589169624b3a28efde2631736f10e6359a106687992fe6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA092313420.