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 0x86706426e6d55774f842d8ea0e87a758671ffa6619bce14231bf9eee85770a3c. 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/29c2a93d-da68-4ead-90f0-d7093297bf21.json and https://artists.proofprofile.net/proofs/artist/29c2a93d-da68-4ead-90f0-d7093297bf21.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 0x6e09b012b0460f7f2bd72c856aad1c36249b015e0f352a71b4ed126ebc91f84b. 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/RUA1D2155981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f64db4f9a80ed5b5a9764d2657b54ea95ca9d840dff490d3d6c985cec54184. 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/RUA1D2270498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd42b7705c92c8eb5453b1245e4ad3c28ea8848ccd00820387980143d9e35e6. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:40:16Z), 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/DGA092312984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463c24c50076689e83a254497bc9f0c19127e01398287c9453ed22e9bbad4719. 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/DGA092312987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749d46c9ff0173d2a61e1e757b4d0708a4132b129ac4229432ef3cd1a08b657f. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/DGA092312988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a2ba4e3c26d18e684a6670173d67e90a7801fd52fd06a15c654197d2dc7f5c. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/RUAGT2359992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecc96d8a94b0fd3bd9c9c430a7bbef2c2521d11c8ea7f48613b602be93cac65. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:07:31Z), 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/QZNJX2483434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83dbca7c74f98da2e4644f1b8b2e7f183539d5abf8d9f0024c58bc35e4e9bbb1. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:00:18Z), 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/RUAGW2500244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ac8f509a88684736a70b8622b62ea6679b3eed1142e8f91b845d7716198107. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/RUAGW2500246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad3141cda7afc332626e3f98a23f09d75fb81cac647ab17ba2d2a998e74d285. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/RUAGW2500111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6f45955c2475508de7b8f5c38acf3782e790fa6b3e16b5e714ced09c809ce6. 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/RUAGW2500253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a858fefcea27f5b35f00f96328f42f6ecbd2d0fd7a5c5d80df2086e12ac5777. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:08:38Z), 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/RUAGW2500256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d312b780ac2adaad474505fdf5771945eb24a550f3004039eb3eefcfcbb02fd. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/RUAGW2500259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2a0b5969e5fc41f141fb442648a99140c3ed3e6fc6592afef572cb6016a9cf. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/RUAGW2500796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e790f7e05633c31c2def0f054c41c24eaa2e9c1ac82ad56525760dcb8e1033. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/RUAGW2500910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abff0b3fd035feb741fcfbe8c10e022150622ec2c19cd9d0086001ad7d3abc7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/RUA1D2582679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd738928cad856e2111039d0335224f159d617754fb2f266e57fe43492602a8. 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/RUAGT2510652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb1543ba0ba395e64018293681904a1439fe55a0306c472ed96b342304dc45d. 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/RUAGT2510653.