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 0xfb8799d94d260c76ee77d2cc0fed6333ecc7e1f3d4ec7da2506e3bd7d7c30a4d. 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/c62f52ef-2f54-4668-ba76-fb275ba10609.json and https://artists.proofprofile.net/proofs/artist/c62f52ef-2f54-4668-ba76-fb275ba10609.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 0xa29f7fb11ac2a8d1597148bee596cde39dfdf0e9aea1b3a076a4e2b18e5c4fc4. 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/3GAu2fSg9deV207noxMKl0.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/3GAu2fSg9deV207noxMKl0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5b0bc7190f8efc92aa1d81d628ca3d31b47e29d1d420d8368b34e043eba704. 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/6mrSxmNrpuXYYCBWi4RfDE.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/6mrSxmNrpuXYYCBWi4RfDE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae743470224f0e8d31ca2c0b4ae008686f5a9314bec0111b8944447d48ab305. 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/0GTiXml7vaGrdBubjKN79y.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/0GTiXml7vaGrdBubjKN79y.
{"copyright_id":"0x5a3df206f3975e9f20e1e8818920d42c621f6750b4db5c9aecf3cb626aba8169","isrc":"QZ2GW2400192","name":"Attention - Slowed Down","registered_at":"2026-06-11T03:38:36Z","spotify_id":"7vZOMoVp0dmL71LyMTUel1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3df206f3975e9f20e1e8818920d42c621f6750b4db5c9aecf3cb626aba8169. 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/7vZOMoVp0dmL71LyMTUel1.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/7vZOMoVp0dmL71LyMTUel1.
{"copyright_id":"0xcc39284aa3da117edd56e459993d4b5189adefd5ffce67babf58d8ae9b0d7bb1","isrc":"QZ2GW2400193","name":"Attention - Sped Up","registered_at":"2026-06-19T02:14:40Z","spotify_id":"1DJVQvDW03mTHUth00qMVY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc39284aa3da117edd56e459993d4b5189adefd5ffce67babf58d8ae9b0d7bb1. 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/1DJVQvDW03mTHUth00qMVY.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/1DJVQvDW03mTHUth00qMVY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5b0bc7190f8efc92aa1d81d628ca3d31b47e29d1d420d8368b34e043eba704. 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/10XA5zX3K8n0lyV5LpK9ji.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/10XA5zX3K8n0lyV5LpK9ji.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c32006baaed4b2eac8656bb1816707126ef0fabcfc7b8ece525d78cfbbf716. 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/5mH230vvkLSBJJZIftBttH.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/5mH230vvkLSBJJZIftBttH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40356048c153b5cb55223dff45ada42f890c838ca6d6987ddede335bcee6ad28. 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/1sUWgb3NBJKYwdV3p4PGF3.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/1sUWgb3NBJKYwdV3p4PGF3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646b9783f3c9b3fa2f81e438e42df948d6a09d0a937caf5c627c55a55ccb8f71. 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/3mcCbbfgR04bXl5ClfIyUO.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/3mcCbbfgR04bXl5ClfIyUO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362fc6261cb8cc5d091ea07fe2968ed1021b9de4b593b8032ff15ec89842f35e. 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/58tW4uUDZpzZZvs0dGhYnl.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/58tW4uUDZpzZZvs0dGhYnl.