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 0xbcf5fe33b32abcd723a8a791a3fe761c109301150b52db470b52a26850930917. 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/d3d772b2-e114-4ff3-8952-b4ca37c89eb7.json and https://artists.proofprofile.net/proofs/artist/d3d772b2-e114-4ff3-8952-b4ca37c89eb7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x98b822ae37bd48599f61ebaee4bfd34c9a08b6813e26f2fa2392a73149c3d65e","isrc":"NOX8G2302025","name":"Pene for OHG (Madrugada 2024)","registered_at":"2026-06-07T18:53:04Z","spotify_id":"07AiVCjOZezUwDQu5HoOYM","type":"track"}
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 0x98b822ae37bd48599f61ebaee4bfd34c9a08b6813e26f2fa2392a73149c3d65e. 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/07AiVCjOZezUwDQu5HoOYM.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/07AiVCjOZezUwDQu5HoOYM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e32008deb8884e443cd3e0be7707fc263201591581c9ab69d9370e2c5df23c. 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/06e4aAmhFlGKXGWIUE9RNZ.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/06e4aAmhFlGKXGWIUE9RNZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b882b00e78bc2586d9c361d458a395084fe0ea6654580a119c7e29ae6c1b855. 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/2Uljuyor6B0AtOXTIJRQS7.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/2Uljuyor6B0AtOXTIJRQS7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3976c157d240af5270f6371baa46d97417bd1685b9518089f9f6cdee5f4fc126. 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/7t7a846y7qUgh2suQY63Oj.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/7t7a846y7qUgh2suQY63Oj.
{"copyright_id":"0xa380acad3fd7bde7d04674f0d6e1d3a71542f1ec6d3937e31768c83d03aed0e0","isrc":"NOX8G2302030","name":"Sjarmør Til Jeg Dør (Madrugada 2024)","registered_at":"2026-06-05T16:09:36Z","spotify_id":"2c6qSj2DPvEswr80uxlOwt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa380acad3fd7bde7d04674f0d6e1d3a71542f1ec6d3937e31768c83d03aed0e0. 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/2c6qSj2DPvEswr80uxlOwt.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/2c6qSj2DPvEswr80uxlOwt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84617b607212a23843957f7f144a241e952ee2d9497fd114ee8b45418d198792. 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/6GuC1aIxGkix9BugSN47Cl.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/6GuC1aIxGkix9BugSN47Cl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5155da35d0e337642eb044a602ad3534cae4f878a22d51d099cb02df6d750a. 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/30nue4kLwHhQnWjQX7CpTB.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/30nue4kLwHhQnWjQX7CpTB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe546f6807c4a9b6c43721738922bf60a73200224aece2370a5607904a9007623. 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/025tziO78vjudkmAwiEufw.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/025tziO78vjudkmAwiEufw.
{"copyright_id":"0x17b8c78ce63e7b3636b7435a6fc4923159e05c58238b39f68c64e8aaaae4985e","isrc":"QZFZ72480830","name":"Madrugada Territorium","registered_at":"2026-06-08T03:10:31Z","spotify_id":"1IbatuQJAvNKpAXi6JOsma","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b8c78ce63e7b3636b7435a6fc4923159e05c58238b39f68c64e8aaaae4985e. 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/1IbatuQJAvNKpAXi6JOsma.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/1IbatuQJAvNKpAXi6JOsma.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6133bf1a0a371c68d106b736569976651f82c5b8d55b5965fc07ae1724bbefc. 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/3KOo7RzfQ86k1z39meJn4c.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/3KOo7RzfQ86k1z39meJn4c.
Dette Er Westside, Part. II (Hillside 2024)
{"copyright_id":"0x5d8d01c729db434afbbb96a56a939b6ad039c43e519888c4f756d657a0e21449","isrc":"NOX8G2400139","name":"Dette Er Westside, Part. II (Hillside 2024)","registered_at":"2026-06-09T15:55:21Z","spotify_id":"2D3qGQU5DriilHKAzKvAyc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8d01c729db434afbbb96a56a939b6ad039c43e519888c4f756d657a0e21449. 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/2D3qGQU5DriilHKAzKvAyc.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/2D3qGQU5DriilHKAzKvAyc.
{"copyright_id":"0xa7057e064c2392b8bdc9fd4f98d3ac61974e7c1095cb537edd27f8064e69c818","isrc":"NOX8G2400140","name":"Project HILLSIDE (Hillside 2024)","registered_at":"2026-06-05T16:07:32Z","spotify_id":"4DcygquT1lBHIbUacfo3kX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7057e064c2392b8bdc9fd4f98d3ac61974e7c1095cb537edd27f8064e69c818. 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/4DcygquT1lBHIbUacfo3kX.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/4DcygquT1lBHIbUacfo3kX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8e8d15f5164c786aef2690463f6eb4873640525d121fdbd3051ce97ad2a582. 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/29S3vYDHhfZfXwXOPzQVzq.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/29S3vYDHhfZfXwXOPzQVzq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59977767ea91a34709aef36056bb123b449ce6e8cb354c47530b90f8545a80e. 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/1SrgnA9vCLD0E81A4EX1qS.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/1SrgnA9vCLD0E81A4EX1qS.
{"copyright_id":"0x741d15a46c6e4658dc765ce7b978b000aafcf03a0eab8ad34a587f61587cb206","isrc":"NOX8G2400143","name":"Holmenkollen Hills (Hillside 2024)","registered_at":"2026-06-08T01:56:36Z","spotify_id":"17HirQE8DaKcPz3q7XGike","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741d15a46c6e4658dc765ce7b978b000aafcf03a0eab8ad34a587f61587cb206. 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/17HirQE8DaKcPz3q7XGike.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/17HirQE8DaKcPz3q7XGike.
{"copyright_id":"0xfaae21f9fda761e691084911df722eb16da0398004f946867deaee05afe7af14","isrc":"NOX8G2400144","name":"Stappa Inni Pappa (Hillside 2024)","registered_at":"2026-06-08T01:54:09Z","spotify_id":"6DB73T99ZpqE0DvVYfve6r","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaae21f9fda761e691084911df722eb16da0398004f946867deaee05afe7af14. 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/6DB73T99ZpqE0DvVYfve6r.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/6DB73T99ZpqE0DvVYfve6r.
Nå Ruller Du Med Hillside (Hillside 2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50922c407f393c0c68b783711dd0e8876d5b62348bfa593f359db59c2f9600e6. 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/03dMeO3pYqHe3ReG4zGtKX.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/03dMeO3pYqHe3ReG4zGtKX.
{"copyright_id":"0xc17ba014301cd753c3393024de6fab34ca93b0e7d63485e261f66b5e2f50bd66","isrc":"NOX8G2400542","name":"Få Det På (Ambush)","registered_at":"2026-06-24T13:16:25Z","spotify_id":"7IugmNCsVzOUITyEoRjkRV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17ba014301cd753c3393024de6fab34ca93b0e7d63485e261f66b5e2f50bd66. 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/7IugmNCsVzOUITyEoRjkRV.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/7IugmNCsVzOUITyEoRjkRV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9472a4107f633e3dc34970482688b3a287a7d7f56e6b39e56d045fdbeb60e8e. 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/5RR4a3PwNtLdeXNnRVTASz.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/5RR4a3PwNtLdeXNnRVTASz.