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 0x1cc5a88f225dedfd7b4791286b6e5a0e46faa374c4190d63ffe06b49ccfd2735. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/abb53875-6716-41a8-8166-e8b95d6611e6.json and https://artists.proofprofile.net/proofs/artist/abb53875-6716-41a8-8166-e8b95d6611e6.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 0x37522e767c2123276491548a67fc3d7d7b4d2a109463021f59c923f711e36cb0. 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/1lqMLr9Wj7SM2F9AikGcxN.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/1lqMLr9Wj7SM2F9AikGcxN.
{"copyright_id":"0xdbf90023c2b7fb6bf9ae706bdc4b05d1f6f4b12b13ed1110129ae6f12afd5b63","isrc":"USSM19922509","name":"Like a Rolling Stone","registered_at":"2026-06-01T03:42:31Z","spotify_id":"3AhXZa8sUQht0UEdBJgpGc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf90023c2b7fb6bf9ae706bdc4b05d1f6f4b12b13ed1110129ae6f12afd5b63. 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/3AhXZa8sUQht0UEdBJgpGc.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/3AhXZa8sUQht0UEdBJgpGc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1a7816d48cd80e2a02f0761e804ef6ae264a38a4dabc3121623c6cab075745. 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/18GiV1BaXzPVYpp9rmOg0E.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/18GiV1BaXzPVYpp9rmOg0E.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37bd8c6108a7076e9117756b0e84a3a83428b87fe598538596d65b63868737f7. 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/6k9DUKMJpWvu6eFG3O64Lg.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/6k9DUKMJpWvu6eFG3O64Lg.
{"copyright_id":"0x89fdfe1e5673e1e492ada00e230103d6784265cf1add506821ff24cef1d54961","isrc":"USSM19922515","name":"Mr. Tambourine Man","registered_at":"2026-06-01T07:22:34Z","spotify_id":"3RkQ3UwOyPqpIiIvGVewuU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fdfe1e5673e1e492ada00e230103d6784265cf1add506821ff24cef1d54961. 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/3RkQ3UwOyPqpIiIvGVewuU.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/3RkQ3UwOyPqpIiIvGVewuU.
Pat Garrett & Billy The Kid (Soundtrack From The Motion Picture)
{"copyright_id":"0x979712bf2a3e2414d4a7a8d2702844655b72df1a336dc10d89f8fabd8aa6528f","isrc":"USSM11304547","name":"Knockin' On Heaven's Door","registered_at":"2026-06-01T03:13:23Z","spotify_id":"6HSXNV0b4M4cLJ7ljgVVeh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979712bf2a3e2414d4a7a8d2702844655b72df1a336dc10d89f8fabd8aa6528f. 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/6HSXNV0b4M4cLJ7ljgVVeh.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/6HSXNV0b4M4cLJ7ljgVVeh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dca1642502818da906bdd3af4ab1f64b4f3dfe0821a8a718852a32f1f92081c. 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/6Vcwr9tb3ZLO63F8DL8cqu.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/6Vcwr9tb3ZLO63F8DL8cqu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc86f202f45d825795d3f38cde530c916d633de8c7c9e34d7410adc91c1a543. 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/0dfdXhBg11XA16XgAEtFcN.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/0dfdXhBg11XA16XgAEtFcN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87311221d68d539c5d3901bccff23c3df2a87f9604e253c39ad1f36b7f119bc7. 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/4uYwlMp841PLJmj1gJJwIq.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/4uYwlMp841PLJmj1gJJwIq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6621e8137ef2b6457c91850392e6747904d9fab17a8bcbd5d62d03dace898d2b. 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/0Fnb2pfBfu0ka33d6Yki17.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/0Fnb2pfBfu0ka33d6Yki17.
{"copyright_id":"0x6621e8137ef2b6457c91850392e6747904d9fab17a8bcbd5d62d03dace898d2b","isrc":"USSM19922549","name":"All Along the Watchtower","registered_at":"2026-06-03T12:54:36Z","spotify_id":"1uumRC6XNCKAvhoCumU2Nr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6621e8137ef2b6457c91850392e6747904d9fab17a8bcbd5d62d03dace898d2b. 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/1uumRC6XNCKAvhoCumU2Nr.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/1uumRC6XNCKAvhoCumU2Nr.
{"copyright_id":"0xabe93071c4a5ee419051010b7610e2ffd552b6c962dde43f5cb428d5d567c7b4","isrc":"USSM16301099","name":"Girl from the North Country","registered_at":"2026-06-04T15:12:31Z","spotify_id":"4ijw7fy7LDYMZDqt6SGWIB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe93071c4a5ee419051010b7610e2ffd552b6c962dde43f5cb428d5d567c7b4. 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/4ijw7fy7LDYMZDqt6SGWIB.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/4ijw7fy7LDYMZDqt6SGWIB.
True Detective (Music From The HBO Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326c2b94a43b01d1659530478fd9f6d3fc0f016f6d76288208e71ce0a1795edd. 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/7le2tmIfjEUrjBJdYxpuAG.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/7le2tmIfjEUrjBJdYxpuAG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979712bf2a3e2414d4a7a8d2702844655b72df1a336dc10d89f8fabd8aa6528f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2JxkmcAU9MfLP9L73D8Eqv.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/2JxkmcAU9MfLP9L73D8Eqv.
Fordi jeg elsker deg (Make You Feel My Love)
Tales and Myths of Gothia - New Music for Concert Band - Demo Tracks 2018-2019