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 0x3f5fb60c31b926f354a2b73aba0451e8ffbf9c1f6a47efa2199dd03c976aad37. 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/e6ed839b-53d8-4d95-8951-f6cd32fb94de.json and https://artists.proofprofile.net/proofs/artist/e6ed839b-53d8-4d95-8951-f6cd32fb94de.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 0x8d6e47a24718763d3fbfa87434813976d5145dad886b012a13121ed492d20fda. 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/0VOkjDfjmqFkRdeJCDxfTB.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/0VOkjDfjmqFkRdeJCDxfTB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544a8cdf55c31ba62bfa895fe0930ddd8b4479f551c208730a46cc0ed73c900b. 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/3XfySJMnojFDaDdQFctpW6.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/3XfySJMnojFDaDdQFctpW6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf8bb0d51855174766445b69c8fed4a581e4988fa0812dc832285d1bae86b4c. 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/06uYcCqk9UkysRrWa45hOD.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/06uYcCqk9UkysRrWa45hOD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f05347b8384493b4a27e62cca6534b90a7377444cc308a1f315eb8612ce46ac. 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/6tk05UCb3F6rcVrh2HDxaU.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/6tk05UCb3F6rcVrh2HDxaU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488746b17982b4225f2ce7dc463071bd209759c5062a18aac57b877790ac9cbf. 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/6BczLlZXps0p81cZ2vYiq5.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/6BczLlZXps0p81cZ2vYiq5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ea4d85b69a0e7a516d17c268e691184dc0fdd7008109801aa62a2c02b7b67a. 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/58SBJy9Gmcs2Aw3wQTr5K7.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/58SBJy9Gmcs2Aw3wQTr5K7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7142e7ba7aea875dd6b6aeec7f677872d389f9f11258b2b908ad36b8873f9f8. 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/543FBKuvpaPwV0EJfK3vv8.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/543FBKuvpaPwV0EJfK3vv8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710c1e84e538f9235beca581b2a7aba65c9f1595a9656243e08b196b83fd6446. 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/2yw36kwoG2vgwcGUXzUqzU.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/2yw36kwoG2vgwcGUXzUqzU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b37414f68a2805ee5c738f9d7a5d65c6c88e62476ef8b40a97090ff3d023c91. 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/3IPxyYtaGrJ7KshBW5mBL9.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/3IPxyYtaGrJ7KshBW5mBL9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6e47a24718763d3fbfa87434813976d5145dad886b012a13121ed492d20fda. 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/2kfQcrUjQ5Y3FPPdgV73NN.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/2kfQcrUjQ5Y3FPPdgV73NN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cd8e8c8bac045a6a267130438676907791d31cf9844220525e236b31052407. 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/1iJqZXkHF4BiOgeRnXOKh3.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/1iJqZXkHF4BiOgeRnXOKh3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fb60acac0e21a56ac45eaff07d92a8e74bac3787598679a31e118cdae2ccb7. 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/73dP94gZX9jl3EmDulQR7n.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/73dP94gZX9jl3EmDulQR7n.
{"copyright_id":"0xb0218fbadb6be6f4734ac08fdfced0878bc9de18280d4c72917f58dfcff7bdc1","isrc":"PLI361368000","name":"DZISIAJ JEST SZEF","registered_at":"2026-06-17T04:56:43Z","spotify_id":"3sRTqz7ZbDbAPT5Kaqar64","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0218fbadb6be6f4734ac08fdfced0878bc9de18280d4c72917f58dfcff7bdc1. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:34:48Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3sRTqz7ZbDbAPT5Kaqar64.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/3sRTqz7ZbDbAPT5Kaqar64.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8ea3a320b584a96d42c96ed3b19bc38402671711a471bf43e0060a86705d33. 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/4dfcErK2Oi64UKPuhnk4Tl.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/4dfcErK2Oi64UKPuhnk4Tl.
{"copyright_id":"0x7175d61b8d75905d45c5d67596fcbb96ca3a6e7aabd5ffd2d98e20af8b7984bf","isrc":"PLI362327420","name":"TOP TIER","registered_at":"2026-06-07T21:27:59Z","spotify_id":"70bGoJRKbfEZWrGLzJgG1b","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7175d61b8d75905d45c5d67596fcbb96ca3a6e7aabd5ffd2d98e20af8b7984bf. 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/70bGoJRKbfEZWrGLzJgG1b.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/70bGoJRKbfEZWrGLzJgG1b.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9743a6169cb8d8dc7734e8727062b487a9aed620faea7554bd2791c8656202a. 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/5bqFap6UaG3AjTb7wrW9LR.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/5bqFap6UaG3AjTb7wrW9LR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa404f904ca5d053b28f604b6516bde3cbab82581fac453c331f3e1ec22693e2f. 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/5NjuI7P64vzvD7rVzfDDPJ.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/5NjuI7P64vzvD7rVzfDDPJ.
{"copyright_id":"0x2aaea0a7f5d6b49c0452189a36a2e9dfa3e626b17ff24b061da7d462d4ce8053","isrc":"PLF242211698","name":"Starsi Panowie","registered_at":"2026-06-20T09:46:11Z","spotify_id":"0sLzKAQtgbpTTiOFDAKpvW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aaea0a7f5d6b49c0452189a36a2e9dfa3e626b17ff24b061da7d462d4ce8053. 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/0sLzKAQtgbpTTiOFDAKpvW.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/0sLzKAQtgbpTTiOFDAKpvW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f05347b8384493b4a27e62cca6534b90a7377444cc308a1f315eb8612ce46ac. 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/0DkQYWLiLKyC8TK3KXWtzk.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/0DkQYWLiLKyC8TK3KXWtzk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4282526949bd352d662ad3cb9d1a6642d1ea6868d3b2cfe11222719c7dd5e5e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0Er2Gqtk8HUu7dSSGg1jvE.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/0Er2Gqtk8HUu7dSSGg1jvE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4282526949bd352d662ad3cb9d1a6642d1ea6868d3b2cfe11222719c7dd5e5e. 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/5QLl8oIU0J2b6RMtPGinNQ.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/5QLl8oIU0J2b6RMtPGinNQ.
{"copyright_id":"0x094fe484b7ea0bf0e81c31e7e2e00d6f0cd5bb63a9478da2ba2fa980cea327cc","isrc":"PLI365655960","name":"BELLO DI NOTTE I","registered_at":"2026-06-05T17:46:26Z","spotify_id":"5Lx6XZIsDj6lT69F07ozMT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094fe484b7ea0bf0e81c31e7e2e00d6f0cd5bb63a9478da2ba2fa980cea327cc. 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/5Lx6XZIsDj6lT69F07ozMT.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/5Lx6XZIsDj6lT69F07ozMT.
{"copyright_id":"0x2aaea0a7f5d6b49c0452189a36a2e9dfa3e626b17ff24b061da7d462d4ce8053","isrc":"PLF242211698","name":"Starsi Panowie","registered_at":"2026-06-20T09:46:11Z","spotify_id":"3PqGnTX5YwvfpmjBAosrfR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aaea0a7f5d6b49c0452189a36a2e9dfa3e626b17ff24b061da7d462d4ce8053. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3PqGnTX5YwvfpmjBAosrfR.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/3PqGnTX5YwvfpmjBAosrfR.