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 0x343bfc46f51d2af3f0484d2e18a7baa429eddac1cb3c7ca2b3c0033d53387078. 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/c70f75df-aa69-45cb-bf8f-f19eb6517fbf.json and https://artists.proofprofile.net/proofs/artist/c70f75df-aa69-45cb-bf8f-f19eb6517fbf.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 0x7e1b41fc668bc4a9cd41d9bd4a2dec89c89ced372f30db854ec451a490cb9497. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/CZA160800093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb390dd16acce5c41f886b30e3cef520743a469f994103a83be4605866285f5a7. 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/CZA160800096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6b1acf1daf3e0d00bd473ab928446e60bce8cd3b6ad3d4db7dec43724db0f0. 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/CZA160800097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cde75d532136d14cdf16ef23fd54d88f0132bf003d69a4841de2dedcf618919. 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/CZA160800100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c42987874e542358dc5a09fd1b6f21264fbdf71a884f28b1e6ce8bdbab05fe. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/SKA920900729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1526c529949c8d5fd012a60a1a1e15db6f448a3bf005d023073659e7c9f0f57. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/CZH661100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e17a2e9da9af43d27b3e091b8804d2e5732bb0b933b29310219b3797963d39d. 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/CZH661100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3f7fd0e57b8de315a6f14ba762dc287cfd8dd2055fb6434eff3a839e3bec98. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/CZH661100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423a10c8e7f25b86a1e9457005da6f842392b253c6093f703170b823c769a66e. 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/CZH661300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876c5e1b32468179cefbd35f506749e9c63e232939f0de7a83fa3fac32611891. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CZH661300049.
Klasický pomalý song, plně zapadající do programového schématu každého dobrého rádia
Klasický Pomalý Song, Plně Zapadající Do Programového Schématu Každého Dobrého Rádia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3501fb38c1be826fe315e3037779bc7e0ea9b639c8e351e01b1e5e42cb80ac. 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/CZK801800075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce3ff83bd1decb9cdabcc9cb82664d4429fd4510067d0a06164acf58ba983e0. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/CZK801800076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc823df63ac3019a9e764357bc6f9939f36f4eadd44c2531ba71b805379a3ee39. 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/CZK801800077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958e9ab556f8a1d823686a22170f300f9a28d3eb577bfe65acdcf3642e587fbc. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/CZK801800078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2838879990e6d037ebda36d47230a3c40f3108f7a3820b7ed1bd11d4cbd23e. 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/CZK801800080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da9d5dfea36adc010ee828fbcf26c52d41fbf0ac3f50c8e7c6d6c6f44b1d420. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/CZK801800081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bf42861eab9300bf7c68fcc5d9367838b1a417ab21bbf9a63d2d28eeaffac5. 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/CZK801800083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe167a03df04f3116feabe70b83e18d4f58bdf5fc5e2d520402d230ece45b3d53. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/CZK801800084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34a04d5fa879ed679efd56ac0d32b00651c227eb5a7429d1e7d03a70f17ba16. 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/CZK801900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88db2f2ffe5e0badb77d210edb33ad0419f314fc85b073ac55bc43938a7d5847. 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/CZK801900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339aab9bcd3276acd85425cf00909a597f9789758f27d05aad0863328358b1cd. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/CZUM72000652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a61cc25e7980abe5c004082771fccabe87fd4f93adf8f6b00e54642d88b5f43. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/CZUM72100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2336fad28b08f04392937ff6536b088342a89496d868a516ac9c10d0c6a39b. 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/CZUM72100728.