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 0x3010450165fc09aceb7b9ff5ab9473abc15d3577f308e566d1f84258c1feb9dc. 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/9c875421-523d-428a-b36e-ef825cfdafec.json and https://artists.proofprofile.net/proofs/artist/9c875421-523d-428a-b36e-ef825cfdafec.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 0xe22b22c2f5329852bb8ee7dbf44f162a759a4d554fe0821fa40e75d59f2e8b4a. 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/6M9Oau7vwk9BLvfKiOUjA8.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/6M9Oau7vwk9BLvfKiOUjA8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7a5503a8b5f6b3688bf88b992e0c2a8dbcac5c2aac7fe9195f2559c8680e22. 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/4IEAidB277gAlxvidmeiXc.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/4IEAidB277gAlxvidmeiXc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4ac38bedb2e7d46d176bb2823f9b61f30f753fcf76bb89890b1343171b45be. 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/0nZ7rTmXbhqjVSbKHeoLCr.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/0nZ7rTmXbhqjVSbKHeoLCr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36dd6c6d527a06782c5f8080924749186a6f819053ddcebf6a4c510c15bc0b2. 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/23XPUoilHzQLU59FHiD4fb.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/23XPUoilHzQLU59FHiD4fb.
{"copyright_id":"0x5fb3b94a180569552f297abf92fd5a008ea796ddb8b54c0ad1a89ec97c96b9bc","isrc":"QMFME2146443","name":"No Lo Compro","registered_at":"2026-06-10T04:55:23Z","spotify_id":"6EmXiOszxvpN3XymfnvJYv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb3b94a180569552f297abf92fd5a008ea796ddb8b54c0ad1a89ec97c96b9bc. 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/6EmXiOszxvpN3XymfnvJYv.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/6EmXiOszxvpN3XymfnvJYv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa062165412152eaf0f81ca24bd10f5173bdf5374bb85d286ce60e587dfb31857. 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/5N6VeWRLMTCQhYxWXxZSBR.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/5N6VeWRLMTCQhYxWXxZSBR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf186ce1545766f43fe3f3cc0468703c3251d9a849647d19dad7fa69fadaf3954. 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/6QrOUBrqm8usp6KCZquAwU.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/6QrOUBrqm8usp6KCZquAwU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86482d4641c11aebc6fe69abba2d9b4b70bd31e5e1d04c1390aedcb317bc9db5. 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/0QYaZ5hNyqqva1Ai0H7dRw.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/0QYaZ5hNyqqva1Ai0H7dRw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd061ff5822171750834a1af0b63a5947734cf15abb172f5cd84a3bb5ff54b312. 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/2Mh9AoRnYRP63LeRpKOchA.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/2Mh9AoRnYRP63LeRpKOchA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8abe532b666bd8500346008845a0b3460e3fa4bc9398811206ce3757815faf. 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/0HygaqgpMjmtUQ52i2kj9O.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/0HygaqgpMjmtUQ52i2kj9O.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e14b8d672a41f96b6c50c0f7206331a79c7f53dbe160b4a084efd9e2c78cbab. 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/732ZzGucAtlbj77GImXPnk.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/732ZzGucAtlbj77GImXPnk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031ce7433ffcd16ed51cdf5cc3e86c4c51a1993d917e4dc3ee595ace21589310. 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/1PzvsHLUbLRsXuKTDvgJPW.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/1PzvsHLUbLRsXuKTDvgJPW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f0f9befd2537e38f6a39b87a0bc123a898a0760b3bf35e29a7079ac6706de0. 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/0JxHWujXDT2CzLWlQXWEhE.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/0JxHWujXDT2CzLWlQXWEhE.