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 0x9414eba93df01ed16e551859f82bbfbbfd122f43b856e8c4eecd6f0eb257a28a. 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/abb3e601-af91-4def-8f3a-187953496d57.json and https://artists.proofprofile.net/proofs/artist/abb3e601-af91-4def-8f3a-187953496d57.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 0x12566cf8ee618a53f3b8c872e2ce3d53f812b33281a6bc6fee4b864b0de0b0d2. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZDQH2358713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa97f7c5dfa971e9236b7e27124a7dee08bf4e1a4896b6b59e0bb8391745ad98. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:27:24Z), 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/QZDQH2375934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f807dd259ceff5d4073c7d643fb322f826e53ab680551d5efeee00b968aeee7. 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/QZDQH2380998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ca64d5c4b6de7248ca960eec323602d1470827ceb02163d42b25190e2c3575. 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/QZDQH2382590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13afc403757290d26b784a5299942b6a859c4ceb3a3280e9c6f445fad8751508. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZDQH2389371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354877f9b20d240b634d39d3c187a621d3538f6b6c2fa2c97e1e550e731e1376. 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/QZDQH2389372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d13d757cf3d6c7956476cc565babd0cf8c2de0736f6915fa09ace365ac8cab. 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/QZDQH2389373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde70d8a67b985701b559b4a5a7571152e542b3cdde4e28f295a2ca4e6fcc9cb6. 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/QZDQH2389374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180f315645202ca0b2e125647d34c3df05a8f1f427d183cc9ae1043072286411. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZDQH2429733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd236388e4851163c79c2ec59744f9eb8da5f9a354bde5000e6cb212ce7a3fbbb. 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/QZDQH2441134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccabb1c40efb74347be86afc9582334ecc68787990d967ef023d477b7107a4f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:38:42Z), 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/QZDQH2440932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a230cf9dabbd6aa72a4a24c036102fa646b41afc1a8527f0e29b45cb6a42d19. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/QZDQH2440933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd848db80569b5276c62212af614a4bd766545a962d32e9e24ba4820487696cc. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:58:28Z), 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/QZDQH2440937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fe8628972863fab1bb853e6b1e5e69c44c6c1a7b3528252f6421a37bd94767. 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/QZDQH2440938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b764849e46c7b81530393c5143fc1e5ca27bf8ad2e01f5afab94b4f2475b124. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZDQH2440939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d567de0c920f5561a1db02e90d0814294dbec17c64bcb2d5f639aa244253d2e. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZDQH2440940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6e1f107863b133028959a9681d8d250a3e0aad71cbac20b973f54eed7d417b. 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/QZDQH2440941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ffd112d559dc8be2c1df6af88d81109dfcb6c1e52e376ee705a586216df8d1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:04:46Z), 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/QZDQH2440942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9946ffd9fb7253c617a9969dc1528f1d78897fa5d80493157717f070bedb2e. Chain 2 (Bitcoin): anchored in block 957633 (2026-07-12T00:19:47Z), 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/QZDQH2440943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096cb8f25bb998a9cebbadfcb5545247311d4b7bf13d27e25f44d8e10956b554. 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/QZDQH2440944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448b04c336ba2c0223ac767aade17e8803c2d492fcac28a1a7711c95e7b4c347. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:19:48Z), 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/QZNJZ2544503.