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 0x3cc250c240016292097a40568ff0558f831643f16b3614c96010c0456416c154. 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/8de68c3d-19d7-4522-8f73-f73b0fbcf214.json and https://artists.proofprofile.net/proofs/artist/8de68c3d-19d7-4522-8f73-f73b0fbcf214.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 0x144d96f4893c213bf64c54a196902757b99b1d4bf25412470350a5109eb8a6ba. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/SEYOK1926094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f2271caab01b72b17e0cf867c1da4fe056ca001d4d3aa50068a39f725cffdf. 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/SEYOK1926096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85aa4d83c5b524f70e06a0a29c9aa31f7849e451aa33acd88dbb23d9c9c82151. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SEYOK1926098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6959b4e9e41e30e438cc5b6b4b7c4dc91916261d9d1e7818e77503699a033a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/SEYOK1926103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e368f2221654fcd361dd98b0e2cade0c058bd0d6bf9bf5ab31cbd57880d594. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:31:46Z), 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/QMFME1941265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800b6335174f3812cddde536158f8d1f1c6663d8c29cd0d92764e019017ecfea. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/SEYOK2022540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6792d48f708ff294de4c1f8112d6a1edc5b8cd10cabc90d6029e9e27ef39f15e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:29:55Z), 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/SEYOK2022541.
Antti Karsee & Prossi Esittää: Kuosikiekko 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09cb861cd12c8859d33bda4b5e508fbfc603a763875d1925aab8fa71b13dbae. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FINBG2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bfe9782e47e4723b8fb98e0785dfb18b26b4179eb60cb8b058f9f045d3ed55. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNWV2462130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd9d17a92b85050bbe825a2ca91169995bb5ddab7f05b5428554ff618670828. 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/QZWFF2412129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe6abd5c1a74bcaed403e91fba934b2daccd1cfeadd0f7c04013b5255866a53. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:44:43Z), 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/QZWFR2435401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7a715ec2b76bf847bbf2dff7e5f40d9644645b5a1ed57fb0e2588228d007ae. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/FINBG2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de04de266733ff99fd787e33214a7bbc72ce46eeeb7e2ddbef5355909a25be9. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZZ7K2420383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b325329a6f4ad621d8d41010f094b31afece30231682132a7801ca4ca79d43. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:38:34Z), 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/QZZ7K2420387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec146bdfa830a260c4732391a49758c8c04e64c76d708ce79892d3e33e700e82. 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/QZMEP2572785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1fb840a1b4c36da638c6f57223c18117c5e7aa8208e5ff09188451360c1a845. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZMEP2572787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b856822ca7f63f1eaaa71d28a298f024f1eb8de4dc14d397d12c2a59a40e0f. 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/QZMEP2572789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9259e57cf4d7b2823480dab2c0a89089a6bd49eec56e1a5b5e57ea331f27c8c8. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:13:51Z), 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/QZZ7L2574510.