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 0x3ad804d0c332fbb134a9b7e210a791e3ff3c1d63e5029ff770c4c782c98c7219. 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/01b75556-7101-4cc9-8551-50a3df4dcec1.json and https://artists.proofprofile.net/proofs/artist/01b75556-7101-4cc9-8551-50a3df4dcec1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Neslop (Mafia Corner vs. Rytmaus) - Single
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 0x0769e086183c09ee9fd0dabdbbb8a840758fd88eabe7e5442cb37633fbb181d5. 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/SKG181300801.
Být či Nebýt (feat. Tereza Kerndlová) - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12a30209ae2173d1657f5aede04818d30fac9509a5702a349a71c30158de85f. 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/SKG181301001.
Jsem Tu Sam (feat. Jaro Smejkal) - Single
Duj Duj Ajla (feat. Cigánski Diabli) - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc46618e52066e358334e9df637060689d0ea049a8b71f94a4e0ee61b6a347d. 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/USDHM1512429.
Vypic a Zic (feat. Danka Stark) - Single
A Ja Taka Dzivocka (feat. Stefi) - Single
Joj Mamka Mamicka (feat. Stylo) - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234ee21b239f62e1237aeecb4635bc758bcdbe6c66fb36ed23315817a7fe05d0. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:09:31Z), 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/SKI541600108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9ff2b24c069dc74117140e4a8f0f0dd9dc7fb3f657e752a25f880d1c38df93. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/SKI541700105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd58d89d4b7dfb1b37eb08a80a0fddb1cde6eb5e100b2c87942adb2906e4d8e. 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/SKI541700103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a07a95510a61f82d959168f2f46423f7e39df3075b2891960aaae4456ee38c. 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/SKI541700102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e70762dc8184340782af9f02cae0db42f2db45e6f6f0a44439434fa129def83. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/SKI541800102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48f5784a49d7e6464ee291f9ce3cbff79e254defcf6c5193f469adb473bfe05. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/SKI541800106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de617f28617548ece9a2e87d293586e034128ffad2b66a002a596f0f6c6e329. 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/SKI541700108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d5cc7f54bb0019bf2b711a540e24dfce00e1b3dee3df0fa9ea4e209ecf5304. 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/SKI541900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c95fc035310738b6c36b6435dbd2733b1834bd690e6b8299eb41db2d0bec6e. 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/SKI541900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed138f5e3cc455c452fbec89f4ed254b4984be7a2763616283acf81bd3b45905. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/SKI541600106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778d2aa04bcf2d7a34ba2887259b2b52edaf617adc26ddf9a406056b585ae0bc. 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/SKI541900105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf39c90263f5ddf51c4346ff676ecf147d8f2edfbfb0694b5380f626b2ddcb9. 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/SKI541900106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a8d70feca1f592a9ee70cc5da9dc645e90402d488727e343fbd7474a7531bf. 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/SKI541500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48f0fb0237c706871e48fbc21b960116f17c31426074e5c395daa7058752ee1. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/SKI541900107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1352c10c138ddf68fd105673719714ad22d9c86e27aabc5c541e506fe32541e1. 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/USDHM2019902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafdf76703865b123cf48cbaa206a47d32fd9fc5b4f495f0d76e9ebc7267627f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USDHM2023532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6e1b3e853d4c6442b66fb8c71377ed2d6cc218b90d9fe41605dba67193ae50. 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/USDHM2109636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b1065050d90125f4801139935a8791f31f34a9dc6cd1b01f1e906aff3e5e31. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:51:39Z), 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/USDHM2207008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515fe7157564451afeff9683782ea5f54de43efbe29996554cba306f941b595e. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/USDHM2403881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9c8a4ad6e9d0d8dd0d2ad2a4ce6a90d3b18ffbbe10b9f7d41df5b233c186cb. 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/USDHM2407098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0f46cfb7edd369f799c70f077752eb99a0067b4a341942d800e7a483db0c76. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USDHM2503665.