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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4e08fb6d9b7e4bf96c591ec29b57a345f30c0439a170cbee3213fd90980ed6. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a0e4aa3e-9301-4942-9840-4280f1db9dc3.json and https://artists.proofprofile.net/proofs/artist/a0e4aa3e-9301-4942-9840-4280f1db9dc3.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f91ad5f08c891625ae9de2aaaeec0a21b4ef915ebe6d049b2c530c93e1f5642. 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/FIHL21300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80f6d4a76c3c3e83d0b55c9731b9dface03dc0019a902b103618c77376ae76d. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/FIHL21500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0af01e695ebb65912c6b6f8f8eb841a01e402c1081c2dd0811a4e47a69183bc. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/FIHL21500036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf109ea6655219e95c3d2c3a4f5361a672d4b82c2f3d131fa5ac0d0aa029c2b13. 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/FIHL21400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97b31d24e889427fe65dbb5008d4c6f2e9cac3420c974e1db270f0ac750552e. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/FIHL21700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d346a90350d82d3f5ccfb1d62468ba334163e855e39733b0329b7c488f2fb8. 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/FIHL21700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f6c2132d830047fd865973be1d780d80325d99f18fbe65a64d1a4ccd42bfb0. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FIHL21700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7176b08b1e274818617cd80b921617b7ce45fb5deccd27f8781ebd4a23e70520. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/FIHL21900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8582ba610b2ae40ee28031a9d94b2e10718e09de123fc552d1f0882da308c682. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/FIHL22000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a43ad04d787904eaa240df5d3a88a51f997391dd902c1cf29d2b8654f65416. 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/FIHL22200096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbad6ffde88c69bb389ddbeac3ad5939f066ae88ca54d1a28a3e1fe5a47f001. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/FIHL22300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f5a2a3c8f725bf63da85485c0b0d94e7d22bcb990d0aacf9008d1cc07a62ce. 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/FIC3M2300041.
Jos tahdot voit muuttua kokonaan tuleksi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b70656d07d77f15221ebfaf1c04d2e160923f388ad3932d69348b2062647e9b. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/FIHL22400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c668f4e6b1f03b27d775f234f8b492be2e6728dadbce79f0af69e701b8c7c9. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/FIHL22400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809414aa53ba6e68a2f075cc5467270544e2fd0ede241b35109ca9889762a4a6. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/FIHL22400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f5045affe3c512d1542dd8fcfeb0f286c7fea1ed99d1c7b766b0df5628d6a6. Chain 2 (Bitcoin): anchored in block 957681 (2026-07-12T09:09:02Z), 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/FIHL22400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3259df60326191c2118ef636eb3488d076d9a7108b051f42d83f925ce1a560b. 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/FIHL22400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8728b39db9706128436654991098c37adb64eb53467f169b649836e48a42f903. 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/FIHL22400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee910734269f66b72d92717dd04928a888d670bde7f4a5aae491eeb80a620aff. 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/FIHL22400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14f198f9f8612fd1e4fb71c23d664a081fba8f688f4456aeec289d7279f6109. 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/FIHL22400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17fa9e94e283a4d6cc5daef1599cde105ea246ce5fd076b07eb3bac6dfe46e8. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/FIHL22400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48e13cede672cfae83a0e8cba6d5a1e37a8f28107c9ea6b94e1ff1066ee6b03. 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/FIHL22400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2712f2eec4bbf0cdceb78e38bc9791a12390ff616b736961a4e4ce05289718aa. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/FIHL22400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa2a4ff1d9b68a24c9660e5ffb20116f0155270afee5e7f2e8cdc205fdde16a. 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/FIHL22400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760e8427e27567f78f3e9cb41f474afe524fc0120a38b110582c4bdbf65e7f8e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FIHL22400064.