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 0x767141858d743cf1d2582ee37ce0e652256caace3f8d2a68a39544f9355a05c8. 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/d2479f8d-bacf-4f96-b867-d598ee38e5fb.json and https://artists.proofprofile.net/proofs/artist/d2479f8d-bacf-4f96-b867-d598ee38e5fb.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 0xeba6804e73499d3a89cc763a7b6c00f6a1a89a103b1793fc0681b5ba499301ca. 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/HRA110510108.
Live Koncert - No Mix! No Sex! (Live Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f937e8e82eb92e48d6f198ba9da685945d782a654ff86f4ae104963aebd3f1c. 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/HRA040645808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7702204ad5f160fd398cb1a732ce8de9f55cc64dc7198efaa2420aabb73858. 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/HRA040645702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779c34aa7e01440cc31fca5ff41a7ea1e4747a8ad5a954c66cdae96be68ef298. 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/HRA040960299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab0ff48457ba080543378d10ef082c679d272912a9ab2dd4f15aa922f5824ac. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/HRA101406687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b20b11d20e60c6f66e5d58229973f28db1ebb6a4e77c96281580f9cd9fe894. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/HRA101507072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a979b56c4b12882d001e049b0930441001fe838167f74721fff9c1a4b9a203. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/HRA101507086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddbc5c9b5cb43b3957fc76f90ec0463df2b2822adeaa32058b39a38497a824b. 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/HRA0T1700001.
Pseća Oluja (Official Mix By Sandi Bratonja)
Lipanj, Srpanj, Kolovoz / Lipanj, Srpanj, Kolovoz - Zapisi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b2d043b458462c9643b22c304c7c0659251ad44159d40756d81804770cc7c3. Chain 2 (Bitcoin): anchored in block 957551 (2026-07-11T10:03:47Z), 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/HRA042199744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72d19a4cc4bbf38fbbc2aedb5f1fc2b6e96be17c0c7ac484723d9f89aa576f2. 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/HRA042199753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b9dae3088c6e403e0849cc7e3882fa69c9298ab4f3f08e1439fb1d18d381e3. 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/HRA042199745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c22bb7ecc1b7c78d1b4e769e068d176c2504af358a2a6f7349565ab1e53a13. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/HRA042199755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0caa06e884fe7aea009d7928469bef734c8b454132f0a403a866fe4ffeb352. 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/HRA042199747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce561f2937f36de73b0b9c70428ccea68a9c21c684008b5436c2941241025ce. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/HRA042199756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5753cee70cba79dd1f05c4e9648cfbef5903c25b3e4f1d4e7ba6f52bfcc1d4d6. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/HRA042199757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053a89e74bf9dcccb321f5cba68bdad7baccf6bc0125ccc88a85775f93b639bf. 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/HRA2U1800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba26c6fcc72c133c670422805b8b9e208afce38304796dfb057351ad576c22b8. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/HRA042199768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5758863cc37d0d7f7d6c0110c6052433939c95962a166b30cf449e344c9f9f08. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/HRA2U1900037.