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 0x6eb823cca08b37597bf7cd9001ecce1cc4648946d58f59a61c34042a06de10aa. 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/f6a2e9f2-f5ec-47be-858b-ac9a70c5e150.json and https://artists.proofprofile.net/proofs/artist/f6a2e9f2-f5ec-47be-858b-ac9a70c5e150.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 0xd61b2ceec3e910767317435a1abdecccaf38657c5e9891990f482338d26e9b09. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/CZA239100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ea79d43d585ad36022945c9c4d3ff9000681d30ffdfe9542e0b3080db912a2. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/CZA239100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598c4c93aa7fc8cb0ff57eb348f18fcfe71cdc57a2dccf085d14335f69c801f4. 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/CZA239100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0743ff799916ba79c8f2896cf5a904187217af978728987301043fb7e9630d12. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CZA239100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e74e3b68cf217147bb3f2bea8f2ce61956c3bc376c76c33eac566cea0532fb1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CZA239100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c375d044f1280f83b93c538635508334861050849fa5696c35ef53c0d930ce. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CZA239100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13bbce630c990c574c66791329a57a9aefeae54de45dfddb56ca0210ff4694f. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T16:03:04Z), 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/CZA239100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1bd1e8fa591380e133c85b0dbd06754f069577380d6fb245088e927ee7c6393. 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/CZA239800657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d67b6704a61f255ea32594ab49b25593fb7071dce950c8cd48e6c700491d24. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:19:06Z), 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/CZA680705203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4276153ff62abdea98e899b37be573131f392a6acc9a8213b81139d78895086a. 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/CZA680705204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e98e133b4df1bb10422a0dea15c044f40c58f6cef9ba5376b460c6c226bef8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:04:26Z), 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/CZA680705217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05a72ad1bd25f2f061bf1748b46468e5967c8579938405cfaf2b5247204b7cf. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:07:23Z), 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/CZA680705219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3582f268186627ea43fa88e6f97c2320e36fc2b9bef8aa91bfadebe212f0f5e1. 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/CZD711900141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe195404abafeb0bdd23aaf1845be6b2a7299efe1f41fdb5b2c2cc8143a9f94aa. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/CZD711900142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb3240343c25e4a25b3771c16e78658692d80dd52937cd11e1e1814a75f5af3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CZD711900145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a840797a0545367e31877515d7a3649409cf1a611cfe8dc24b56d526d39c247. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/CZD711900146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf519db8666c6fbe508d75a26c16a8aea1a4c92dc62d931398a399f022fd53f9c. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/CZD711900148.
33 let antikrista (Live at the Palác Akropolis Prague 20.2. 2020)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ee99ed7827b4798fd516fb88572126f9bae0f84d90ca8d25feb49ab9d4d053. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/CZD712100161.