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 0xed41545fc2f9d04b9b7b9b8ff4157405523546d2cfdc60eb64b4ed27e19caa56. 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/d69e5949-ea75-4ba5-9b95-89b9512b3e5a.json and https://artists.proofprofile.net/proofs/artist/d69e5949-ea75-4ba5-9b95-89b9512b3e5a.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 0x477c5df79bd3f940940d55d7cd43872b02905f04deb278234e47926a684b4b89. 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/7uhXBUkCaav2ljXn7ptUfF.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/7uhXBUkCaav2ljXn7ptUfF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf29349940e8e32a550b32a8c8dea2f2751e1ae55ccfe7263d967d0d3b27660c. 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/6QvgKY4IZuW67GxX5nI10d.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/6QvgKY4IZuW67GxX5nI10d.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb016caefca09d95278753e99859d78dcb31feac56c732a30514e6c1100a980e2. 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/2QRZtcJBCB9mHtK5NVG2oZ.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/2QRZtcJBCB9mHtK5NVG2oZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938e23af94fa540d464d4b8c8b0cb15db0d0b2e53260762651135512382c1ac0. 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/56KngjqqzuFnZwtiXHaL0u.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/56KngjqqzuFnZwtiXHaL0u.
{"copyright_id":"0x2efd39e5cace8d5e2facad929ac0202d4a1ed1c1ffa3fef8ccfa516a58e4c0e2","isrc":"QZNWR2391162","name":"In De Hook","registered_at":"2026-06-06T08:37:41Z","spotify_id":"2Q09Bfxbgdgma32oX2QC6f","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efd39e5cace8d5e2facad929ac0202d4a1ed1c1ffa3fef8ccfa516a58e4c0e2. 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/2Q09Bfxbgdgma32oX2QC6f.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/2Q09Bfxbgdgma32oX2QC6f.
{"copyright_id":"0xe8e1809b9919156ee4cdc711bf0aeddf64f4b48eacbf93c5d112d7df9fc38604","isrc":"QZNWR2391163","name":"Rammers Van De Randstad","registered_at":"2026-06-07T16:03:59Z","spotify_id":"1TtBl5Lxf5hO3XNFiuGOuD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e1809b9919156ee4cdc711bf0aeddf64f4b48eacbf93c5d112d7df9fc38604. 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/1TtBl5Lxf5hO3XNFiuGOuD.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/1TtBl5Lxf5hO3XNFiuGOuD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb016caefca09d95278753e99859d78dcb31feac56c732a30514e6c1100a980e2. 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/2zc91xwRdogXOg4nJTQvCR.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/2zc91xwRdogXOg4nJTQvCR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a350ef9b5c113f047ba7026d5128c1b63f9f45073c843be6cf1816d70b3e922. 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/4aoy3KbzMgmdQdNJNZTUbc.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/4aoy3KbzMgmdQdNJNZTUbc.
{"copyright_id":"0x7ec4ab7d5de8f85ac6948d28f78b764a73522ccc5ed60476c445f0fcbd5f1c86","isrc":"QZTB32225047","name":"Laatste Kracht (Wavy)","registered_at":"2026-06-06T13:35:14Z","spotify_id":"01bLaMSO7FeW0lRJmPglm7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec4ab7d5de8f85ac6948d28f78b764a73522ccc5ed60476c445f0fcbd5f1c86. 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/01bLaMSO7FeW0lRJmPglm7.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/01bLaMSO7FeW0lRJmPglm7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92280db71b63782be122798d46121e5b104a7042a9f04fdd0b1e332607c4807. 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/7DRDbNOzkwlaTgN513vFqe.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/7DRDbNOzkwlaTgN513vFqe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4538722f68b54129e05eb8eb4d10413e40a3b87f35a1a3461b1da8e5549f9926. 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/74u1rDTEHG3kiv0APu3mXK.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/74u1rDTEHG3kiv0APu3mXK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea167e2258477102678e770265b44f70477dddf314bae4a23790bb319c09970. 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/3DCKTj8EPMu7iaKm1aCQAb.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/3DCKTj8EPMu7iaKm1aCQAb.
{"copyright_id":"0x055f57d1ffde01c5d4682c1e1ba456d1d394aa1df8676b2bc09a99c28975ec8e","isrc":"QZTAU2469626","name":"Verliefd Op Je Bestie","registered_at":"2026-06-05T18:39:19Z","spotify_id":"3T5iF2UhqayoYMOnltRkC0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055f57d1ffde01c5d4682c1e1ba456d1d394aa1df8676b2bc09a99c28975ec8e. 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/3T5iF2UhqayoYMOnltRkC0.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/3T5iF2UhqayoYMOnltRkC0.
{"copyright_id":"0x10ebb0ff73c7c2a673aaa80b60db6fcc7302cdc83d5627f2fd644eb1036e15fc","isrc":"QZRP52459292","name":"Mijntje - The Partysquad Remix","registered_at":"2026-06-07T02:15:55Z","spotify_id":"5KER7l4skHQ68FJnAuY4Sc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ebb0ff73c7c2a673aaa80b60db6fcc7302cdc83d5627f2fd644eb1036e15fc. 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/5KER7l4skHQ68FJnAuY4Sc.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/5KER7l4skHQ68FJnAuY4Sc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab524a42e5f262d14e57242edec5e4597173d7b017adc1e6b4ca2718cf738e7. 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/7G8Sd2g1wVXnmPUxpRitEX.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/7G8Sd2g1wVXnmPUxpRitEX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989d84adc0006575705d589f9ffec91cd7818f639195a2392ba8691cb215c553. 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/0De1Ft4hLBgg8HeHro9a92.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/0De1Ft4hLBgg8HeHro9a92.