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 0xee6117945b37e68bd3932c466ae76f6cb6ff72ba47657f93d704ffce2874becc. 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/d5e00f3e-51e3-46e4-8e73-03f06aa9e55c.json and https://artists.proofprofile.net/proofs/artist/d5e00f3e-51e3-46e4-8e73-03f06aa9e55c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x6b1b362cff796468f068681a747c3c9bd3af0e2b2f7fac7cb118317e5fa194bc. 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/6noXn80goSX8ocS9Ftdw8H.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/6noXn80goSX8ocS9Ftdw8H.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a90ebd340f55fb4805b62785f3b332c318d7c56dea3341b1df13045cb47a72. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1W98XIYA7JvRXlBVPe4VjJ.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/1W98XIYA7JvRXlBVPe4VjJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f60274ba34434cf8a48eb55c528bf1ffe98d81520b21df2464b52c6b071394. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4g2VaYetovzRAHldCKMfrt.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/4g2VaYetovzRAHldCKMfrt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7446013644666ad10491bada07bacacff34f1120f8f29883aa2ebab3c909f8f. 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/5d5vsY3klWFSbOtRX474rT.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/5d5vsY3klWFSbOtRX474rT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a90ebd340f55fb4805b62785f3b332c318d7c56dea3341b1df13045cb47a72. 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/7Jh5EwdwtemlAp0joCHSnP.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/7Jh5EwdwtemlAp0joCHSnP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12cb7070c4e8053d1942def7da248657e012acd5568028c008e7b8db53177832. 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/7m4JNVTT6LhqNrJsmkH1XR.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/7m4JNVTT6LhqNrJsmkH1XR.
{"copyright_id":"0x03ce462330e6c5dace379a5154acd755337f1946b9268affce598376ab5bf8bd","isrc":"HUMAG2400107","name":"Kutyahouse (feat. Csodaszoba)","registered_at":"2026-06-17T09:31:44Z","spotify_id":"4JYuTy4IXDBW2kIGuNgNcZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ce462330e6c5dace379a5154acd755337f1946b9268affce598376ab5bf8bd. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:46:05Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4JYuTy4IXDBW2kIGuNgNcZ.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/4JYuTy4IXDBW2kIGuNgNcZ.
{"copyright_id":"0x6732710e5ef726320a5f8714817ddd50726c4e1da7d5201191aade4bbbf8cb96","isrc":"HUMAG2400108","name":"Badacsony (feat. toldyuuso)","registered_at":"2026-06-08T05:12:23Z","spotify_id":"3vhUVWzf4fmBfWao28FLji","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6732710e5ef726320a5f8714817ddd50726c4e1da7d5201191aade4bbbf8cb96. 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/3vhUVWzf4fmBfWao28FLji.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/3vhUVWzf4fmBfWao28FLji.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc958923d45aeb1db98f5ec728943593100a04f1fb8b19ab658a453ed121c62. 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/2X4lL3oNaNe4EcTcj2poTq.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/2X4lL3oNaNe4EcTcj2poTq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f60274ba34434cf8a48eb55c528bf1ffe98d81520b21df2464b52c6b071394. 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/0i9k6BasRSkUFhPJ0glxQB.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/0i9k6BasRSkUFhPJ0glxQB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790dfa06012a069219b0d385f04d8c2aac6277e722978a2445fef630c60b5c9b. 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/4kN5E59qCG1jp22cdUcF10.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/4kN5E59qCG1jp22cdUcF10.
Ha Meghalnék (feat. Indigo, Mehringer & sosehol)
Ha Meghalnék (feat. Indigo & Mehringer & sosehol)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18022254fd33e6381cb29e8f991467b4277c0c2a6a26ea4aa1e9e2635c067525. 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/5QQ6n6w38laoBNkv2lNPGd.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/5QQ6n6w38laoBNkv2lNPGd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18022254fd33e6381cb29e8f991467b4277c0c2a6a26ea4aa1e9e2635c067525. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6Dknai0WGwzi36HdHx0f8k.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/6Dknai0WGwzi36HdHx0f8k.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a30d04f2ed4bb6cc1ed0435e5ffbde639ea55d246e88f92a8782213ad182189. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3j2FrQtdq4vWYe2w9hG9kA.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/3j2FrQtdq4vWYe2w9hG9kA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d207fc65782a89ef79110a52604c76744d64cc4899c3dfb09a1d4408f1713c. 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/7LPwf6t1GOhrtD0vTvD9bu.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/7LPwf6t1GOhrtD0vTvD9bu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfea674a21353cc98078c7251536a88598c2396e6b6e73b2151c9d676311d9d1. 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/0LmOJVAJXW0DXeqo8umhW9.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/0LmOJVAJXW0DXeqo8umhW9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790dfa06012a069219b0d385f04d8c2aac6277e722978a2445fef630c60b5c9b. 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/0TZrhJxzRRpU0jktCCmRqV.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/0TZrhJxzRRpU0jktCCmRqV.
{"copyright_id":"0x18a92f2f34798194de2d1244bcbbedf4adf2970f9a006854bc59e738f576bd40","isrc":"HUMAG2500038","name":"Ha Meghalnék (feat. Indigo & Mehringer & sosehol)","registered_at":"2026-06-05T18:35:34Z","spotify_id":"05kTAevWO4W5HyzRUCc8IE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a92f2f34798194de2d1244bcbbedf4adf2970f9a006854bc59e738f576bd40. 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/05kTAevWO4W5HyzRUCc8IE.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/05kTAevWO4W5HyzRUCc8IE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d7d7a5f29bc93d18547158265d4d0010ecaf111f4e1b2f04d251f6b91658e0. 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/61K0ZT7QEVXy6mYArRFXcR.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/61K0ZT7QEVXy6mYArRFXcR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc779b56d0cdc83c5c948cdc464d6acb98be62e13e2272b62c7fb8989105c0dae. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0hxF4QDD8XxamRYTf5h3FG.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/0hxF4QDD8XxamRYTf5h3FG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c927cc8f6fea9c99385fba67665efc44ba26f8cc452526296bf492262ba65fb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3UYMUdfaEve33XUXiQQ8fh.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/3UYMUdfaEve33XUXiQQ8fh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8a4068fc6fa3447967b1757159d7f582c3bc3c888370bb16dd9dfb0692ec61. 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/5RA7ZPNMVzVx70t2GUj4SY.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/5RA7ZPNMVzVx70t2GUj4SY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc779b56d0cdc83c5c948cdc464d6acb98be62e13e2272b62c7fb8989105c0dae. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/02CdOh37OAq88RNK1WL8TD.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/02CdOh37OAq88RNK1WL8TD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c275141f99f09cf631d6475f9474e9ca34237e985c42fc3c89dced7fdcb4410. 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/5vSRfpuX6URp6zYNQEtUI8.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/5vSRfpuX6URp6zYNQEtUI8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c275141f99f09cf631d6475f9474e9ca34237e985c42fc3c89dced7fdcb4410. 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/4cUIRhXmcBsI3JdP18Ld8f.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/4cUIRhXmcBsI3JdP18Ld8f.
{"copyright_id":"0x51b1e95ae8a64d66d0e0a6c061cc6c2cc6bcb1ff264a6cec1789596d471db907","isrc":"HUA612302140","name":"Red Flag","registered_at":"2026-06-09T11:47:16Z","spotify_id":"2gFPZYIFICTcdFtJLMBXxW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b1e95ae8a64d66d0e0a6c061cc6c2cc6bcb1ff264a6cec1789596d471db907. 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/2gFPZYIFICTcdFtJLMBXxW.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/2gFPZYIFICTcdFtJLMBXxW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b1e95ae8a64d66d0e0a6c061cc6c2cc6bcb1ff264a6cec1789596d471db907. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4AGV3aqWg5a7pLQJe68rrj.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/4AGV3aqWg5a7pLQJe68rrj.