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 0x6a7e966050d2f3e04d0bb6197bf1e3923ceec4a4911261e35eeea893681a5803. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f01fa3a-acdb-4b05-b58f-26745d6c9be6.json and https://artists.proofprofile.net/proofs/artist/8f01fa3a-acdb-4b05-b58f-26745d6c9be6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x034e6498a7cbaee0637cf67cdaae013ca8b7d0bfb052da9021a03cc9f802bba6","isrc":"DGA0M2423239","name":"ZWEISTELLIGE HAFTSTRAFEN","registered_at":"2026-06-18T03:26:35Z","spotify_id":"78KSariM8RmxM0rKhtn9yk","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 0x034e6498a7cbaee0637cf67cdaae013ca8b7d0bfb052da9021a03cc9f802bba6. 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/78KSariM8RmxM0rKhtn9yk.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/78KSariM8RmxM0rKhtn9yk.
{"copyright_id":"0xf4eec73b88eee63fd6a541867d0c626c500ceb34cb97b4a491746acdbf036266","isrc":"DGA0M2423240","name":"JEMAPELLE CRIMINELL","registered_at":"2026-06-07T08:20:30Z","spotify_id":"63oLR8yLB0o5KnlclyT2EI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4eec73b88eee63fd6a541867d0c626c500ceb34cb97b4a491746acdbf036266. 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/63oLR8yLB0o5KnlclyT2EI.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/63oLR8yLB0o5KnlclyT2EI.
{"copyright_id":"0xf1032970eef6fff3b0d0593826cc2a0f683996b64b61e4fa38fafc3ed87ac1ac","isrc":"DGA0M2423241","name":"DRÜCK ES","registered_at":"2026-06-22T05:10:02Z","spotify_id":"0mcvleW2KgNx5OqVItSMiu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1032970eef6fff3b0d0593826cc2a0f683996b64b61e4fa38fafc3ed87ac1ac. 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/0mcvleW2KgNx5OqVItSMiu.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/0mcvleW2KgNx5OqVItSMiu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b674c547a5b983ad5feeea727c94e41dc2b486caef4d9b08a384d41082eec1. 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/35the7nAex24YotdTg8UcY.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/35the7nAex24YotdTg8UcY.
{"copyright_id":"0xfcdf3d0bb59ec22770411f123259aa5acf9b9bb1f03794cf561c86bc4c8bff87","isrc":"DGA0M2423243","name":"MAMA WEINT TEUFEL LACHT","registered_at":"2026-06-22T10:06:04Z","spotify_id":"5bzskkXKga3wOtFchBFTH2","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcdf3d0bb59ec22770411f123259aa5acf9b9bb1f03794cf561c86bc4c8bff87. 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/5bzskkXKga3wOtFchBFTH2.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/5bzskkXKga3wOtFchBFTH2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b40b0c058601b91258a7713699bc4494aa559c1b567e367a643900b57dd28d5. 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/5Co9a7hfB34JjdHjPQw2iX.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/5Co9a7hfB34JjdHjPQw2iX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee944297b6a7dfabe097953904f9a4151a3978dea8353f52952dc1e2b2ede4dd. 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/066trcwnDepdAoJcaR6VhN.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/066trcwnDepdAoJcaR6VhN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff86f89b3ac008d106b4d8641efe1b1f314d0a0453dce2a7b524dc990c0e0155. 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/69FCdiB2qPZiZjGs9GHJSB.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/69FCdiB2qPZiZjGs9GHJSB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266b89bc93f3d6c2fcae6bb208db54cca33f723bf28a0e9d2a87d48aa4694204. 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/03nvtLSzZFQ2W1SyLiOyVk.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/03nvtLSzZFQ2W1SyLiOyVk.
{"copyright_id":"0x9384658fbd5f2eb9c4f8a4b7ff1f949dc4ec0a8c5ab0b40176dd5a47dbcb9fbd","isrc":"FRX872427183","name":"AYE MAMA","registered_at":"2026-06-18T03:26:51Z","spotify_id":"3hRT85WyDiW6QTjwMdvkgN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9384658fbd5f2eb9c4f8a4b7ff1f949dc4ec0a8c5ab0b40176dd5a47dbcb9fbd. 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/3hRT85WyDiW6QTjwMdvkgN.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/3hRT85WyDiW6QTjwMdvkgN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f26b9915e397dab6285312bd0da8ff24e74ec55f8b8075fc7c932e6077f73e5. 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/2k4yUgx8dcXu3Ih2noAAq0.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/2k4yUgx8dcXu3Ih2noAAq0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c27597fdb32efd288d0bd5447f033b36f89c944f231946b3c738acebb7b8af4. 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/4A5yO8TLlLJL0F7YvwMLYk.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/4A5yO8TLlLJL0F7YvwMLYk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77493d58cf43c0f5b978e16c000e425d47d1023c5acd1ddde911f0653e91f5ea. 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/0URcsD2QAmmCFs6xxhopok.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/0URcsD2QAmmCFs6xxhopok.
{"copyright_id":"0x0b26d9f09b574766436efc3ae0d383c147aa2480bfe0dde78f5a408cd6b35d41","isrc":"DGA0M2423250","name":"HARAMSTUFE ROT","registered_at":"2026-06-19T14:45:53Z","spotify_id":"24fckxvyqnNS59yVizagkU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b26d9f09b574766436efc3ae0d383c147aa2480bfe0dde78f5a408cd6b35d41. 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/24fckxvyqnNS59yVizagkU.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/24fckxvyqnNS59yVizagkU.
{"copyright_id":"0x690a210a0caf481f2a880dae73e36f02eab0908bef4d2d05da4151d1ad4faff2","isrc":"DGA092454572","name":"HAREKETS 2.0","registered_at":"2026-06-24T06:47:51Z","spotify_id":"6WLagRhIsYGxbdi7c6XS7S","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690a210a0caf481f2a880dae73e36f02eab0908bef4d2d05da4151d1ad4faff2. 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/6WLagRhIsYGxbdi7c6XS7S.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/6WLagRhIsYGxbdi7c6XS7S.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea35ee047cdf60694998f5c2894aa0246da0157ecb7a44f172e43a0a6bf7819. 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/5Id8vh3DMmdC4XvXlF8k2s.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/5Id8vh3DMmdC4XvXlF8k2s.
{"copyright_id":"0x690a210a0caf481f2a880dae73e36f02eab0908bef4d2d05da4151d1ad4faff2","isrc":"DGA092454572","name":"HAREKETS 2.0","registered_at":"2026-06-24T06:47:51Z","spotify_id":"1Q8SlYDEHDfhlHacFCnxRz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690a210a0caf481f2a880dae73e36f02eab0908bef4d2d05da4151d1ad4faff2. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1Q8SlYDEHDfhlHacFCnxRz.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/1Q8SlYDEHDfhlHacFCnxRz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77493d58cf43c0f5b978e16c000e425d47d1023c5acd1ddde911f0653e91f5ea. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1mR5qJ4ld1yQVZCJkLEl3F.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/1mR5qJ4ld1yQVZCJkLEl3F.
{"copyright_id":"0x9384658fbd5f2eb9c4f8a4b7ff1f949dc4ec0a8c5ab0b40176dd5a47dbcb9fbd","isrc":"FRX872427183","name":"AYE MAMA","registered_at":"2026-06-18T03:26:51Z","spotify_id":"6F5VxMZIcrTGr5lCNO34SF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9384658fbd5f2eb9c4f8a4b7ff1f949dc4ec0a8c5ab0b40176dd5a47dbcb9fbd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6F5VxMZIcrTGr5lCNO34SF.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/6F5VxMZIcrTGr5lCNO34SF.