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 0x98729d8610924cd8a08b3f7cfb7bd6628fe037f99a17150db0f4df40c4ee7b05. Chain 2 (Bitcoin): anchored in block 953617 (2026-06-14T09:00:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1bfffd92-f8b1-4036-84a3-dc50fd1466da.json and https://artists.proofprofile.net/proofs/artist/1bfffd92-f8b1-4036-84a3-dc50fd1466da.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 0xfba7154652b04647bd2b56dc2b6a84e2a7f93616c733243cb7f42640be6f23fc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BEP011400233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40224fae48990a8f43049931b86503b7a8701491d496c3c286082faa8ab8e48. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BEP011400234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62382ca5891cd70329ac13b9777629eb8bdc64ae77572fe0287992920feaef64. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BEN582000331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acf2c3a69133f7b66da7a450d0d4bd29f497fff9b160af1a912b059591ebe44. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BEN582000332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5971f430d921edfe8cb187b8071341b4a739ec19725aa0587a5c6595cb817136. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BEN582000335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535948957a9efa54f85b336c034d72615dba213c9971810aa1f9d11784f48c69. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BEN582000336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad3028718f3397a994050f0248312b71580ba984c3951a4f1d8725f9cf81f82. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BEP012105005.
Relinquishment Into a State of Selfless Being
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71835ac867e48900e6602e7d51a077be91bef0b55fc1c9684ff1b3b9ddaa9da. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLV61418491.
Tiptoe - Reworked by Ansatz Der Maschine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1fd9f0cbe69b3a6e8c1aa92427f6da4427f1c3f34e02a9bfeccda83226e217. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BEP012140008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad3028718f3397a994050f0248312b71580ba984c3951a4f1d8725f9cf81f82. 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/BEP012105005.
The Mermaids of Bergsjøn - Reworked by OUTER
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b8b8839c1068f1a06640f22aa0f4e88a1fb6a0919ac8664ab238294ac2d482. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BEP012105004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b11f5511213017463183e71619af74067116e13cac494f5523a95f3a34c2d30. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BEP012105007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f6259a04e7a70ae295d1965c3dd687b96ac1b78bc9a5c58322ab096a363903. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BEP012105002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496fe0262c093554c62c7a74f29b173fd3930975b45d8a4fd41c778388a7c7c4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBBRP1337705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963f4ae7c0c6a2404ffcc9db74f8b072b19919d9541b3aa02a1543c3907f3f29. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USNO11000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4b95014e6680f665d64847a4d819d64167fa18930c50ff5bba91fe7b93f86c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBUM71003572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc77f08d84d23fb871562f818ad548cc5ecabb167989adc873782dff694b92c3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBBRP1129103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31211c41992abeed41bbe658535014d3996bcfda4e2ab1208ea54597846b1a26. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USSUB1411509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766eb3e6867966adb40703060f4015489b8bec0b0b3a79f40797e36a210c01ec. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRU700900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce8643f7ed27711f39365638d914c33cbc98fb44dda497b2d55985401e9858d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USY6C1119904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0560c734580ca6e088b25cde77285da5549623631fa2c86cf20f798d608e1418. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/US53Q1200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ebcf2bb8bdd7f5fce474061cd5744d4a094810d6e9b557f2e435a11f0bfd1f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USVR90953710.