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 0xe37c51976a08b05546ca935de3c6087ef7fd4f1428f1b74aefd7a7792f381207. 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/a1def88a-388e-4581-b0fc-ef54d113f466.json and https://artists.proofprofile.net/proofs/artist/a1def88a-388e-4581-b0fc-ef54d113f466.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 0x31101fa8e4193db34d4627e25bd95dc9c504fc9a1364b811e0c6c6c07783c685. 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/1oRS6exfLDzDDhwQUUn8kz.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/1oRS6exfLDzDDhwQUUn8kz.
{"copyright_id":"0xf21a30edb6c7cceb03d0b047817b076344f8aacc98d8e0e69416c61227b8a6a6","isrc":"SE5IB1801073","name":"Monotone White Noise","registered_at":"2026-06-05T08:12:59Z","spotify_id":"6hJBF6IxvHBhVmh0xmCjgC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21a30edb6c7cceb03d0b047817b076344f8aacc98d8e0e69416c61227b8a6a6. 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/6hJBF6IxvHBhVmh0xmCjgC.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/6hJBF6IxvHBhVmh0xmCjgC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b63c4919027573b7895ebec4744d257720aa978ce43e58a66f307e43331478c. 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/4p50B0MFNktErwhb1PFQyn.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/4p50B0MFNktErwhb1PFQyn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efa3375c155328fdd27aec72d25ea6083e610c53c368c3c27577540c142f336. 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/1Abdhw33FjRegcx8XGSbdd.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/1Abdhw33FjRegcx8XGSbdd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55677ecf14f077bc5538e182321cceee91c6d377f55624564c55a686ad2f56a9. 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/71lOt0cHjzuwWkzoLRH0Dl.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/71lOt0cHjzuwWkzoLRH0Dl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ab59ac1cb79615f657916982e59bea28feab11b840ce3e71b03d4484296309. 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/3qIz136rH2yXwasnJE3Lpu.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/3qIz136rH2yXwasnJE3Lpu.
Embrace the Brown: Relaxation at Its Finest
{"copyright_id":"0x448b5a39e4acf2b50d58596ca1f7efc1c573b151d0bddc159a9b0ecdc46532e1","isrc":"SE5IB2287799","name":"Brown Ocean Noise","registered_at":"2026-06-10T01:50:32Z","spotify_id":"6H4CKchYaqQQVpano6aTxM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448b5a39e4acf2b50d58596ca1f7efc1c573b151d0bddc159a9b0ecdc46532e1. 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/6H4CKchYaqQQVpano6aTxM.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/6H4CKchYaqQQVpano6aTxM.
{"copyright_id":"0x0dddbabf88eec8c6c07986ff5f2515126138864d6bf2b66fd5431981778f8003","isrc":"SE5IB2287800","name":"Waterfall Brown Noise","registered_at":"2026-06-08T18:29:40Z","spotify_id":"0i68rdevXuAI3IobSv4ibC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dddbabf88eec8c6c07986ff5f2515126138864d6bf2b66fd5431981778f8003. 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/0i68rdevXuAI3IobSv4ibC.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/0i68rdevXuAI3IobSv4ibC.
{"copyright_id":"0xc8ce71297976f186256d2b74090c69cf95bd59d46d2b835575005234478c2d84","isrc":"SE5IB2287801","name":"Brown Noise for a Better Sleep","registered_at":"2026-06-01T14:32:32Z","spotify_id":"1YQGoYjVe5MInsnmUnclFD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ce71297976f186256d2b74090c69cf95bd59d46d2b835575005234478c2d84. 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/1YQGoYjVe5MInsnmUnclFD.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/1YQGoYjVe5MInsnmUnclFD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ab59ac1cb79615f657916982e59bea28feab11b840ce3e71b03d4484296309. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3nV13F6rfvqu22P5UsSz2W.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/3nV13F6rfvqu22P5UsSz2W.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31101fa8e4193db34d4627e25bd95dc9c504fc9a1364b811e0c6c6c07783c685. 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/4mkyCp28A2ldIXjcOh7N65.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/4mkyCp28A2ldIXjcOh7N65.
{"copyright_id":"0xf21a30edb6c7cceb03d0b047817b076344f8aacc98d8e0e69416c61227b8a6a6","isrc":"SE5IB1801073","name":"Monotone White Noise","registered_at":"2026-06-05T08:12:59Z","spotify_id":"4559MuHvjvvxrAtnP45EzO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21a30edb6c7cceb03d0b047817b076344f8aacc98d8e0e69416c61227b8a6a6. 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/4559MuHvjvvxrAtnP45EzO.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/4559MuHvjvvxrAtnP45EzO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efa3375c155328fdd27aec72d25ea6083e610c53c368c3c27577540c142f336. 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/1sbT3x5rgTz7lu8SjpYz0Y.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/1sbT3x5rgTz7lu8SjpYz0Y.