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 0x19d717601b57b9dba47fdf9a7ea9c70d92ffae5b3c93bfbad6896a23c9e4faa9. 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/8b53d93f-a6cf-4d37-804d-01d64164a64d.json and https://artists.proofprofile.net/proofs/artist/8b53d93f-a6cf-4d37-804d-01d64164a64d.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 0xec2f7a1afb663e7fd350592743ab6a4d29925225bb1871234d474c4051030fb6. 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/4LE19hyhYEq2b7Kt2yYPFv.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/4LE19hyhYEq2b7Kt2yYPFv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe809d0dfb669f86caffb10b5852a1673844668720f0e53839b4506576748d42. 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/6BSsaGDo6SXqHIGYqHffC8.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/6BSsaGDo6SXqHIGYqHffC8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef6c93a758f3df3abefc209e3229922d68871147d3354d87012c6265cfcc694. 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/0N7XyhroAYL0his46xxNyj.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/0N7XyhroAYL0his46xxNyj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc255f7820f3f20852a7cbaa857220fc2236e0d428e026a04a1a1f0af2a8f86e9. 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/5VEkFlaS12TsOdeofJGPVP.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/5VEkFlaS12TsOdeofJGPVP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205f240f00c6df61bc2436c2e61bf9af55d10655a9ca5da2aaa8ebc9cab79610. 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/6MqGikDFtfJzefbbtsb67p.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/6MqGikDFtfJzefbbtsb67p.
{"copyright_id":"0xf868fb1ab009faea958eb19b8ef24ffb4ef0b4534e7ada16760256358bd0b3bf","isrc":"NLT2H2200464","name":"Everything You Want","registered_at":"2026-06-05T07:01:22Z","spotify_id":"6ozX8ikYxbC3MOxqbvVYEY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf868fb1ab009faea958eb19b8ef24ffb4ef0b4534e7ada16760256358bd0b3bf. 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/6ozX8ikYxbC3MOxqbvVYEY.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/6ozX8ikYxbC3MOxqbvVYEY.
{"copyright_id":"0x65f2a66b502d0c1c53f5af94bdb943af8927d9b91ac7649b43edf0f889c03f20","isrc":"NL4VT2100136","name":"Worst Thing (ft. Tudor & TUSO)","registered_at":"2026-06-07T18:53:10Z","spotify_id":"23vFXDz2TUgVAFCsZoejZH","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f2a66b502d0c1c53f5af94bdb943af8927d9b91ac7649b43edf0f889c03f20. 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/23vFXDz2TUgVAFCsZoejZH.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/23vFXDz2TUgVAFCsZoejZH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624ecdc9746e393269da82f935db5046dcb4c2c8451536b1b54922b6198e6bd3. 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/2ULc68AwJcOUHwOydtsFII.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/2ULc68AwJcOUHwOydtsFII.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa384fb3fc86b4d36c646a7555392666c5072745d61915251c1897d31b355ea85. 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/1OVHv6vRSqa8FvSQkFR5M9.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/1OVHv6vRSqa8FvSQkFR5M9.
{"copyright_id":"0x8a9b7000578bf3798508900d5b84a08dd210c44ff0dfdac6f3d5ddb9a90af173","isrc":"NLT2H2400770","name":"Tidal Wave","registered_at":"2026-06-07T00:50:20Z","spotify_id":"0TMaLzDaHXi8VAq4oJfWXE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9b7000578bf3798508900d5b84a08dd210c44ff0dfdac6f3d5ddb9a90af173. 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/0TMaLzDaHXi8VAq4oJfWXE.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/0TMaLzDaHXi8VAq4oJfWXE.