1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xf2cd2fd4bb13909884c9a1923d5d1ec8380d3929c1ad6b7523f44c8d760d6b3d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3cf95bd1-120f-4e76-bd6f-bba4dad7cae6.json and https://artists.proofprofile.net/proofs/artist/3cf95bd1-120f-4e76-bd6f-bba4dad7cae6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x97aaaf97cb631852d6a0aecdb704c68e951da29c8da66a199b7cd4a6a44c06f5","isrc":"CZA232300658","name":"Zkurvená jízda","registered_at":"2026-06-10T03:33:02Z","spotify_id":"6ikhuitWO89LXEj1MoE0Bs","type":"track"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97aaaf97cb631852d6a0aecdb704c68e951da29c8da66a199b7cd4a6a44c06f5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6ikhuitWO89LXEj1MoE0Bs.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6ikhuitWO89LXEj1MoE0Bs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1931f6eb3b9d7cf13a22cae21249b50f806a55b1b6fee2e93664e3d3b46d30. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/288QYGPsRVWSNIPR9HJtRs.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/288QYGPsRVWSNIPR9HJtRs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248c4571295299af2e173e7e7208c3d1934bd2acc2d671efc09756d62978388b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4cbliIj7gGewRJVvqinVUv.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4cbliIj7gGewRJVvqinVUv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d13247772fa672e9280251c60f1f2d5ffd7dfecd09b8dd0478fef4101403415. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2DUjZ0fIo3qPfBCKzarYbd.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2DUjZ0fIo3qPfBCKzarYbd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725298eca3599de4251d54772517dcfbbceda86ec655a67804da0ffc15db7183. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/384DIUwY6MCQdq1DHEcHOA.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/384DIUwY6MCQdq1DHEcHOA.
{"copyright_id":"0x5a3c1eb0c9db6c1d5a34d62570186736f82dce68c266ec705e8a55e6edc2cad3","isrc":"CZA232300666","name":"Pro všechny ženy","registered_at":"2026-06-20T19:24:10Z","spotify_id":"08xMpOt7WRkkV7tebUYRBC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3c1eb0c9db6c1d5a34d62570186736f82dce68c266ec705e8a55e6edc2cad3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/08xMpOt7WRkkV7tebUYRBC.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/08xMpOt7WRkkV7tebUYRBC.
{"copyright_id":"0xdae7783c8969d432f0fb52a29330a1fa4b40d7bbdf58f0e49bcc413d93a1a956","isrc":"CZA232300667","name":"Neztrácet čas","registered_at":"2026-06-27T00:15:04Z","spotify_id":"29Ce1ydSr0DbZwcGwXqkDr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae7783c8969d432f0fb52a29330a1fa4b40d7bbdf58f0e49bcc413d93a1a956. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/29Ce1ydSr0DbZwcGwXqkDr.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/29Ce1ydSr0DbZwcGwXqkDr.
Všude kudy dem (feat. MC Spyda, Brejchus Pavián, Rook, Batrs)
{"copyright_id":"0x2dc6fc1c07e1ee5e1ee75b862ba799476a70b7a73e9b1ebddb87d87e7e62df34","isrc":"CZA232200525","name":"Všude kudy dem (feat. MC Spyda, Brejchus Pavián, Rook, Batrs)","registered_at":"2026-06-10T01:58:34Z","spotify_id":"4vT5CMqdHemid9ml67wCFR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc6fc1c07e1ee5e1ee75b862ba799476a70b7a73e9b1ebddb87d87e7e62df34. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4vT5CMqdHemid9ml67wCFR.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4vT5CMqdHemid9ml67wCFR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36247653e601d5e140341e451ca9f3666ffa4ebd6d342bf71ccec449d76e5c8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/582aHa6QzwbrjU9PUoRhbX.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/582aHa6QzwbrjU9PUoRhbX.
{"copyright_id":"0xef02aa8bf5cb55181ad0ff47bfbd49168e43a075e89d9f96e69b3a9e54dc30ee","isrc":"QZES52158430","name":"Studio Session, Vol. 4","registered_at":"2026-06-06T17:04:13Z","spotify_id":"19NrhYTYgscoMRUzSubCoQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef02aa8bf5cb55181ad0ff47bfbd49168e43a075e89d9f96e69b3a9e54dc30ee. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/19NrhYTYgscoMRUzSubCoQ.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/19NrhYTYgscoMRUzSubCoQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c4eb331dbfa36bf86ad9f7df6426f206d712bcb35a3146b09168681db357c5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/007D9FiioIhK2BsSJtA23o.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/007D9FiioIhK2BsSJtA23o.
{"copyright_id":"0xdfdfdcd6c4b5abc0679692e1bd9c90a7c142c52bb891707bc6a9f466f931d825","isrc":"QZK6N2052419","name":"Studio Session, Vol. 1","registered_at":"2026-06-07T13:24:55Z","spotify_id":"0NjVzD5I8SWryEk18LU6pb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdfdcd6c4b5abc0679692e1bd9c90a7c142c52bb891707bc6a9f466f931d825. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0NjVzD5I8SWryEk18LU6pb.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0NjVzD5I8SWryEk18LU6pb.
DROP THAT ANTHEM VIP (feat. Drop Database, Magenta, Bio, Brejchus Pavián, Mc Jelen, Mc Jílec & Puškyn Nikodem) [Meph Remix] - Original Mix
Na Stage (feat. Magenta & Brejchus Pavián) [Vocal Mix]
{"copyright_id":"0x65c443455d1e082e914376d481c388caf1c99c7d7725b1cdf7760041dd41c14e","isrc":"GBSMU6023479","name":"Na Stage (feat. Magenta & Brejchus Pavián) [Vocal Mix]","registered_at":"2026-06-17T09:29:10Z","spotify_id":"6ZYspKnaDDvc3NIkUv8wsC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c443455d1e082e914376d481c388caf1c99c7d7725b1cdf7760041dd41c14e. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:45:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6ZYspKnaDDvc3NIkUv8wsC.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6ZYspKnaDDvc3NIkUv8wsC.