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 0xc031a42aa0d810f8a0a0ee1080aba661c17dce46103c27d410a50e25ce05b62f. 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/d5688464-4c9a-4e2a-9412-2993034a24f1.json and https://artists.proofprofile.net/proofs/artist/d5688464-4c9a-4e2a-9412-2993034a24f1.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 0x77bc0faf8225e7bb04c7388401267e3100b66c4fccf8170333a1e741ef339b09. 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/4n3gy5T1vylwKMBjgfp5WQ.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/4n3gy5T1vylwKMBjgfp5WQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47a1eeeb9f8dc6a965a130d71f9f4a9841a04fa9d82cc8a6d2d518d6ca8c888. 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/6o0oFsoD0KOnU67HCYNQ1v.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/6o0oFsoD0KOnU67HCYNQ1v.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0057069881797b8f532a9a742d8238cee4c5ccc389c1a5c88e7356f8c1271c8. 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/3NVyZ16LMd3uu2FglkAp6c.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/3NVyZ16LMd3uu2FglkAp6c.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0057069881797b8f532a9a742d8238cee4c5ccc389c1a5c88e7356f8c1271c8. 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/3bHuprO1l4tqOUg1HaELLL.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/3bHuprO1l4tqOUg1HaELLL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0057069881797b8f532a9a742d8238cee4c5ccc389c1a5c88e7356f8c1271c8. 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/7yWzOFNriMOvqnCbUl6kYU.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/7yWzOFNriMOvqnCbUl6kYU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc7d0665d5c8be4fda59262d9099facfb615e445ac410bd3f8d73cd1058f186. 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/3X8Nzz0GZ8UkqHavrbw91H.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/3X8Nzz0GZ8UkqHavrbw91H.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd012871fc90edc5e09797c04d2dfc1f40946e370929e5c36d676d8733d453d8a. 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/5rQiu2ZqgONmYfzL0UGsBe.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/5rQiu2ZqgONmYfzL0UGsBe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a003fce0f04770540148a88f51cc09199a4041f13a4c3ce47c778fded925227. 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/5YrYJzUsFYuGFBmENGXNQU.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/5YrYJzUsFYuGFBmENGXNQU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677ae0b6339f72d1229a33ebbe7be6df566131bb8d74cecea0e094bd8b42b1b6. 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/1Skr3wz4W7yZc3z5BZ7zc9.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/1Skr3wz4W7yZc3z5BZ7zc9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c240bc802ee79448b7cee070f2e528217a388a9de7a47ec1be1706a982be10. 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/6WayLArGCw7Go1YuNzChhs.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/6WayLArGCw7Go1YuNzChhs.
{"copyright_id":"0x309b7a26be39bdbb9a3f46e6bbfa183c961dc02d860451fa97bcbb20d0b1aa69","isrc":"QZK6Q2100951","name":"Save Us","registered_at":"2026-06-11T20:13:27Z","spotify_id":"5VvvC6WgGObvtQvCwLbvcb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309b7a26be39bdbb9a3f46e6bbfa183c961dc02d860451fa97bcbb20d0b1aa69. 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/5VvvC6WgGObvtQvCwLbvcb.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/5VvvC6WgGObvtQvCwLbvcb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945eafcc37008b1ad29f2024a3e4db339bf17c85e1ae8d4f318a0b433c48c6b0. 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/6qteQDILfV5Z9IaYUOXYHt.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/6qteQDILfV5Z9IaYUOXYHt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c508a6cc38ebceccb6c3c128e2ba0d667617cea2c101e64711217acf160f16a. 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/1STYvtVFDDaJqT7CJvkpJk.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/1STYvtVFDDaJqT7CJvkpJk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b0a5be734048165aaa2e086d8767732b2db4ec94b55978d6b4909ca975879a. 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/0bQmciHN8kZwiZcvQmYjOD.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/0bQmciHN8kZwiZcvQmYjOD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d60675eb13415fb25e5bcd639f2f08c1f0bf9a9d6d773fc3e777cb241ba06a3. 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/28g5eIW1ucZmDiRmT2rRQL.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/28g5eIW1ucZmDiRmT2rRQL.
{"copyright_id":"0x0c4fe71af7ba5b19cc05024a503d36caec3d389b14b5d9fad4a79c2155a3daa8","isrc":"QZFYW2085003","name":"New Tradition","registered_at":"2026-06-05T10:01:04Z","spotify_id":"1tHcpOPvHGoPnm1HixFZnw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4fe71af7ba5b19cc05024a503d36caec3d389b14b5d9fad4a79c2155a3daa8. 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/1tHcpOPvHGoPnm1HixFZnw.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/1tHcpOPvHGoPnm1HixFZnw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0d7b69f0b1f6be123552dd1c71a68fa0c10c4d5f2bd3b727a27876991965dc. 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/1AlyhxC2kzgjK7CRch73X1.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/1AlyhxC2kzgjK7CRch73X1.
{"copyright_id":"0x50bffcb694c77bed4a2a91aa77e02e6cc050a9a000ecfa36eedc89ce381c9347","isrc":"QZHN81914290","name":"Let It Begin","registered_at":"2026-06-04T11:13:13Z","spotify_id":"38oKZYp7GYisfrhWFAlTkV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bffcb694c77bed4a2a91aa77e02e6cc050a9a000ecfa36eedc89ce381c9347. 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/38oKZYp7GYisfrhWFAlTkV.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/38oKZYp7GYisfrhWFAlTkV.