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 0x399f82c82d1a923e9576a099a533724e154ad0edba1ac381b6ca4e2df5a1370f. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff995411-2301-49fa-8d7c-a1cada5dba70.json and https://artists.proofprofile.net/proofs/artist/ff995411-2301-49fa-8d7c-a1cada5dba70.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 0xcfd23dcd8f55569d6536f40cf0cb9fa7cf38bd363f0ef4d2395cc391d9020f89. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QT3EZ2504237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566f0edbbe6be854e62a02a56cf360757671c4f907588575854c93a6a44a0441. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZZ7Q2569327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ee512177da0d28749bd402084910d99fd7d912bf8b22226af33e4ffe3809ae. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:43:04Z), 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/QZZ7Q2569328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac80c91679f9ac8b42d0089d380677b6dc3c38eb4ebf694dfdbe60552b8b439. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:57:40Z), 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/QZZ7Q2569329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23b53cd0c59152f0b1778699fa763eef86c019d07079c017879684c559f9a3d. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:36:23Z), 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/QZZ7Q2569330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5232d15adb1a119be6cdd38712971c152d919b8d2eb32f1be871eeae8062d18b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZZ7Q2569331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e366dce939e842227c6240040cb43322e21f5ee33c058a7f6ce6bf5866b7358. 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/QZZ7Q2569332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ad97e10e09d7148c67d6c0dede2ba72e95076e1a56dfb12692aab263e8677a. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/QZZ7W2595509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb22f3debbf5260171210d9abc553ba5f11c6eee679143e18f19f5e4ee4c806. Chain 2 (Bitcoin): anchored in block 957810 (2026-07-13T05:55:46Z), 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/QT3FC2518307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc11fd122f12c6e8ab9542115c26bc3813d85e279e21786b201314cd0792b93. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3FC2518308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504294e8e28c1e7031d3684b9ebf9ac38b034933d41823fdac9c749f11baec14. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3FC2518309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb825eef1a360fc09b5d452f0ff2c40889f15c738c43d09c76b783e059d905631. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/QT3FE2545406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee85535a0bb77af52d1be1bb6fc66c5eb7c651d5cab134fe8821c18dc3c381c. 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/QT3FE2545407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3692c6053357ec2fa5bca89c595f5b609019dc2a5e1dca3c6df23db6f3359698. 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/QT3FE2545408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfc018a37c1b5e68e1e169c41f7bd12fdcdf3aceba627549db6bdb995b21a1b. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:49:12Z), 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/QT3FE2545409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a574f641f4f320f3cf8fcdb239e473ea1240b59b9b0a53b97eafa2fe280782. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QT3FE2545410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36152f0d00383486103756561d583c017f1f0070b8d2351c63224f3ec47eac49. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:30:42Z), 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/QT3FE2545411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7c1f99fe4a48f54ce4faf414a7fac8db5cd2c8d20a151abdf8595441f21fa5. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QT3FE2545412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45986a2b4e022bb574a5896e5fea69f17c30e3d1e7569f56d6b0f6a55f4b8ef0. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QT3FE2545413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec26ced4d7930792cf688166ee26d2a176b4dddbe025789b446afd1f1000c22. 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/QT3FE2545414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b80fe47eaf52043ef0214bae54fc5a6e3a851848f064ce3df1f5d9c5991c4f. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:23:29Z), 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/QT3FE2545415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827af520c09a34ba285ce37c740d3bb683e9e5a2fffedd38f44c54f5d63a6f4e. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:08:02Z), 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/QT6EC2555475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a3b942b0f3cc85275ac2fb3bad5b8979ae8a053b7e9ea5b6ad318b7a477c77. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QT6EC2559094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1511cc44fa2ec74565f0abcf72f2321f56407e2c1d45d173252e1edb3100a97d. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:53:44Z), 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/QT6ED2566783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e09a93d07633c3b1d2936b7ff40427c586467edfa61ed9a54a75f2b42bd310. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:58:24Z), 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/QT6ED2566896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3883b58884f401b8b6c2de8cc6c3f49ada712c7a0174c508951fc808835b3c. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QT6ED2570369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcb9f0baee99ff32fcc31df3d41de306aaebff8d8702d0aa20f875ef65457f4. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:24:07Z), 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/QT6ED2566742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da7de1b0ae2d02442c4582db9e418c1970dcc4489b04450fccb974a7d97eebf. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:23:39Z), 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/QT6EE2577479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec93477da0165b29fb4e7363ae24525d3e6ab33f089872b9cf928231be4f34c6. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:53:37Z), 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/QT6EE2577477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ddc032a1ef8c4d014d0c0903074cf52745b6016c8e9a0e902cf6b863986f70. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:59:26Z), 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/QT6EE2577483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27ed54de931c766eacbf72922fa7e409c62fe7e3045ad09de824ad97ca54628. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:53:03Z), 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/QT6EE2577456.