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 0xb97a88a8d6f766d2d88cdb185f5a5d6c993861392078dac53e088c9a3f1222b5. 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/d70fd153-d2cb-46b3-bf21-5ae39ee16209.json and https://artists.proofprofile.net/proofs/artist/d70fd153-d2cb-46b3-bf21-5ae39ee16209.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 0x3593d6d2a04d6e7067abe831b09636a99bb7afa91f0071110335ca09a32f7971. 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/4u1cDiTBmHqIIuAn67UYli.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/4u1cDiTBmHqIIuAn67UYli.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefde8476af3f5069c9b0d5f06d779b7119e2b316ea077e35e3b3d843c6c30bef. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/66nnbyyvRM0b3BcAFby8kc.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/66nnbyyvRM0b3BcAFby8kc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840797ca7ea1fd8ae40099e3ce7408385d70b4931069bd3e6b586215399e833b. 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/2J2B9A66mdovx1wlzNcxV2.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/2J2B9A66mdovx1wlzNcxV2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343e9c89c15753ba07e436748da27529474073bd1fddd2228c2c2bf0c2a0d439. 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/30DHClgsD4beLZexSmj8Sm.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/30DHClgsD4beLZexSmj8Sm.
{"copyright_id":"0x875ca853fef8db09cfbbb1c6fa09c9eaaab5deda7ca3d25f279813664b782f53","isrc":"PL2DY2301609","name":"Members Only Cypher 2","registered_at":"2026-06-04T12:10:08Z","spotify_id":"3zeCFuEnHTFMNESeZAvdNA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875ca853fef8db09cfbbb1c6fa09c9eaaab5deda7ca3d25f279813664b782f53. 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/3zeCFuEnHTFMNESeZAvdNA.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/3zeCFuEnHTFMNESeZAvdNA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343e9c89c15753ba07e436748da27529474073bd1fddd2228c2c2bf0c2a0d439. 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/2HwCGU6t0x8rMmlOVlwV6w.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/2HwCGU6t0x8rMmlOVlwV6w.
{"copyright_id":"0xbd5bf45fa33171c3ea3126578af4941df950caebc49a1510bc2e3cf960deb7ee","isrc":"PLA552400672","name":"Looney Tunes","registered_at":"2026-06-18T20:31:16Z","spotify_id":"055VXN56WpbvQB5kQd8Zwf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5bf45fa33171c3ea3126578af4941df950caebc49a1510bc2e3cf960deb7ee. 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/055VXN56WpbvQB5kQd8Zwf.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/055VXN56WpbvQB5kQd8Zwf.
{"copyright_id":"0x7a18f027487a2bef9e41cf6caf3858b346c11efca3f36f7452d92be35426f5ae","isrc":"PLA552400676","name":"Boli głowa","registered_at":"2026-06-18T20:26:51Z","spotify_id":"5KehfUrm0AzBVoRwOBIpR4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a18f027487a2bef9e41cf6caf3858b346c11efca3f36f7452d92be35426f5ae. 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/5KehfUrm0AzBVoRwOBIpR4.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/5KehfUrm0AzBVoRwOBIpR4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfea477841c1990f7d8fc16bd7fe7fa4005df94343523d93d18388f8937f2ef. 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/1lRLCwFCICv4h1fgeEtvN2.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/1lRLCwFCICv4h1fgeEtvN2.
{"copyright_id":"0xfc362f10241e6cc75f12c4c22efd1206eafa4d61b062cb098a7f67b62a340f6e","isrc":"PL89B2200064","name":"TRYB GHOST","registered_at":"2026-06-18T22:46:48Z","spotify_id":"6THzfxCEuzCFyvC8trQXcN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc362f10241e6cc75f12c4c22efd1206eafa4d61b062cb098a7f67b62a340f6e. 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/6THzfxCEuzCFyvC8trQXcN.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/6THzfxCEuzCFyvC8trQXcN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65d7902c07729f492b3b125e9a792259c4d150c8daca5c604324289c78db812. 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/62ZTt5IdCYocyz5DvugFDW.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/62ZTt5IdCYocyz5DvugFDW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefde8476af3f5069c9b0d5f06d779b7119e2b316ea077e35e3b3d843c6c30bef. 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/5gk3HGclACOQl3A1YimeMj.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/5gk3HGclACOQl3A1YimeMj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0ebecde035102278703d9d60df66a5a70e6d60ff71f7c0d33cb8281b863311. 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/5iOo8a8lEa0agFa7OG1We3.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/5iOo8a8lEa0agFa7OG1We3.
{"copyright_id":"0xe17156066ed34d9867226d5a16babc0cfda69e4b22d4e1dd4ed8aa80d899348e","isrc":"PL3B02300001","name":"BEZ LOKALIZACJI","registered_at":"2026-06-04T14:54:15Z","spotify_id":"2Gikijk4VAPyKTZVhTO4o6","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17156066ed34d9867226d5a16babc0cfda69e4b22d4e1dd4ed8aa80d899348e. 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/2Gikijk4VAPyKTZVhTO4o6.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/2Gikijk4VAPyKTZVhTO4o6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0d4e4060cf1721c6eef15a1674367524e7ab64cec7998cf2407add4a7635b4. 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/6f8LrAHQgtIFZ7SrH3RpjL.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/6f8LrAHQgtIFZ7SrH3RpjL.