Peter Lipa (born May 30, 1943) is a Slovak singer, composer, and promoter of jazz. He has been called the Father of Slovak Jazz. Lipa is regarded as the most significant figure in the Slovak jazz sce
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 0x05e57d250c3bfefc142f831db98c0e56180ea5a42ba01d7a73404dd6f45ffb63. 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/727c13f4-640d-42c6-9bb2-9ce3d0163513.json and https://artists.proofprofile.net/proofs/artist/727c13f4-640d-42c6-9bb2-9ce3d0163513.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 0x302fcb48e05a58388a3d3367e694a17d192b07c8dca030170eee1a5c83080642. 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/SKA128918501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671172d427bfff4fbad9110f5ee5d4a8f19aa12d5378184bef9a479889db19a7. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/SKA128918506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e81943f8964b1bc93d5a30acdef0ad1332645e994f236e0c0eedfa615a9875. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/SKA419400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7441e01e13acf09c10982052ea381b430bf7c9c0e761ef5e340345c44e430a8f. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/SKA419800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd919095ca6657c23d72e37a872e0ce1d1179ec1f1e55c8464cb784d35bce3cfd. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:04:17Z), 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/SKA410500104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6800252f8fa8130e0905305e0f24f1aeacac71fb3bd8628f1d8d080b4d5c20ae. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:34:43Z), 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/SKA410500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb447e3620f571e41753c619316cb4ab85a1c058cd3b65b648c53d94a8a322aa. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/SKA410500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a15335b1f5b81f3756c9a9a0290ece233665badfa4ecf3d0623dc06b524a682. 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/SKA410500107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f19a39ae8b2fafc443832ce46b9be62e159c80314fd128468c6a34b8cf1beb. 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/SKA410500115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388a39fd2df6808777c44b58548198a919509008d70697e21f48ef127032ab52. 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/SKA411300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53cf2c81c0276f583f16c271c4cd4ebf015c4352e4db1ce466ebe90bbf1dc172. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/SKA411300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f61227e7bc534c76c0b8b07137b8648c98652ab0cc4ad0c701953605ce9de1. 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/SKA412300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1d16715a2258165ad6f0823a797c32b005ae4761237e4492cda4590699bc97. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:52:07Z), 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/SKA412300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c972f5dea665b25f220784caf19f10b3158ac9d672d315820d1a99fd98b13f. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:39:18Z), 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/SKA412400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb9385a33c28e225f7ee6f284760017c812b38f0e53ccbc68fbdb1321ef00a5. 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/SKA412400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e6950b96d717439cfb75d90bfc4a61b350199c61e5bd6a8d3d4963fbdcef0f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/SKA412500002.