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 0xe6ecd59904f0a8f2aefcc893ff8e0af4c88a1cb61adae66da4c6b0711abdc1f6. 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/4d25e2e7-de3f-4540-962b-679bff79e302.json and https://artists.proofprofile.net/proofs/artist/4d25e2e7-de3f-4540-962b-679bff79e302.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 0x1c698ed73d2964b5ccbf8e5f94b93149ff14e7e395112beb7355280c465c5fb4. 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/5LAsl3k0Vas49Pnoj9GJr3.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/5LAsl3k0Vas49Pnoj9GJr3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927932c0d2e4c47f6429a5881501f089da6ebae64d47fc6fa0abb29ce3bd7d32. 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/4suuLSP0116Bs4oy5SKLmU.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/4suuLSP0116Bs4oy5SKLmU.
Hvad Er Stemningen? (feat. MAS, Kundo & ozzy)
{"copyright_id":"0x86b4a23d104b438be76b861b49bc0ffeac71a47a4473b032859514b1d4b6b138","isrc":"DKUM72500212","name":"Hvad Er Stemningen? (feat. MAS, Kundo & ozzy)","registered_at":"2026-06-01T17:05:07Z","spotify_id":"6e60axNyEsOa6Edwp95QW1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b4a23d104b438be76b861b49bc0ffeac71a47a4473b032859514b1d4b6b138. 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/6e60axNyEsOa6Edwp95QW1.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/6e60axNyEsOa6Edwp95QW1.
Handsome (feat. Benjamin Hav, JOSVA & Gilli)
{"copyright_id":"0x1471663502130f359f5d80d774d37b1f99744631cb181e75f7db4c80ca582f74","isrc":"DKUM72500206","name":"Handsome (feat. Benjamin Hav, JOSVA & Gilli)","registered_at":"2026-06-01T12:59:37Z","spotify_id":"1hiYxHW3uKBmKm1ByvHeZd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1471663502130f359f5d80d774d37b1f99744631cb181e75f7db4c80ca582f74. 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/1hiYxHW3uKBmKm1ByvHeZd.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/1hiYxHW3uKBmKm1ByvHeZd.
Byens Hold (feat. Noah Carter, KESI & Lamin)
{"copyright_id":"0xb4591f86a42b6af096ddb0b407ef6b743f7298084bfa58071c9740321651f291","isrc":"DKUM72500213","name":"Byens Hold (feat. Noah Carter, KESI & Lamin)","registered_at":"2026-06-01T13:10:58Z","spotify_id":"2gZFWmcE98gNuhkeycpB0I","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4591f86a42b6af096ddb0b407ef6b743f7298084bfa58071c9740321651f291. 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/2gZFWmcE98gNuhkeycpB0I.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/2gZFWmcE98gNuhkeycpB0I.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2138da34f2d07fd87a5818038846f8a88c37ef0072f936a91b4f332ae3da3d7e. 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/5V6GtuyYBrIfQIZwh0B8Ye.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/5V6GtuyYBrIfQIZwh0B8Ye.
Hørt Det Før (feat. Pil, Annika, Mille & Medina)
{"copyright_id":"0xb76b2398e3e57a36c131b842341b085e9941ba59d4457e0c825d4cbec1da7f55","isrc":"DKUM72500215","name":"Hørt Det Før (feat. Pil, Annika, Mille & Medina)","registered_at":"2026-06-01T09:41:52Z","spotify_id":"2MOH9hDRMYCpNzmHzCRjPh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76b2398e3e57a36c131b842341b085e9941ba59d4457e0c825d4cbec1da7f55. 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/2MOH9hDRMYCpNzmHzCRjPh.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/2MOH9hDRMYCpNzmHzCRjPh.
Hvor Skal Vi Hen? (feat. MAS, DJ Ary & Sivas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb258849df1338879481f622185f142034c80caf46ee2ea94d79a60f4742a45fa. 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/0xljs2KXx1E1V3jWz8uF8F.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/0xljs2KXx1E1V3jWz8uF8F.
{"copyright_id":"0x7290de92c795775b7cd1f2c997dfbf5e072c9d1f3d8a7b7814f330d4ed5e79e3","isrc":"DKUM72500009","name":"Blodigt (feat. Annika)","registered_at":"2026-06-01T18:40:43Z","spotify_id":"5fFVI2cNXckUEkttuVOumi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7290de92c795775b7cd1f2c997dfbf5e072c9d1f3d8a7b7814f330d4ed5e79e3. 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/5fFVI2cNXckUEkttuVOumi.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/5fFVI2cNXckUEkttuVOumi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe75d5d1aea45905c0bb69a126039e50575544ffc12f1c2dfc5a2b2700c5c06. 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/4G5TLlI23IEGczjU3Oj6fd.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/4G5TLlI23IEGczjU3Oj6fd.
{"copyright_id":"0x78eb27eda62b3a91fbc7cdf217aeee43b23ae838d06872a37bec1696b71551dc","isrc":"DKUM72500218","name":"Din Energi (Prelude)","registered_at":"2026-06-04T07:21:59Z","spotify_id":"0DQFWs0JSvzDYVZc8ijqjO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78eb27eda62b3a91fbc7cdf217aeee43b23ae838d06872a37bec1696b71551dc. 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/0DQFWs0JSvzDYVZc8ijqjO.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/0DQFWs0JSvzDYVZc8ijqjO.
Din Energi (feat. August Høyen, Artigeardit & Bette)
{"copyright_id":"0xbb6f26b2cf1f6b303c0ed4118ea597acbc9a041c1a353498e3b928c7d738b9d8","isrc":"DKUM72500219","name":"Din Energi (feat. August Høyen, Artigeardit & Bette)","registered_at":"2026-06-01T23:27:45Z","spotify_id":"0gxuyDEXyInoU1RvCxqC8m","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6f26b2cf1f6b303c0ed4118ea597acbc9a041c1a353498e3b928c7d738b9d8. 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/0gxuyDEXyInoU1RvCxqC8m.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/0gxuyDEXyInoU1RvCxqC8m.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789a45907237c3efc05144389549a36a99a8616f9bf26e9d4786e4dc78928215. 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/5yAmrdr99vvaWUKfH8fcMi.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/5yAmrdr99vvaWUKfH8fcMi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd467165a740b2350f592be198510f11577314fe4628aea790f58e66fc977b30d. 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/2SIn4GfX7nAEQZ9abmHWbr.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/2SIn4GfX7nAEQZ9abmHWbr.
Lidt Luv (feat. andreas odbjerg, Artigeardit & Lea Romea)
{"copyright_id":"0x6ae8e75002f3f40941fd30c7f51bf4240992737d458841232882e2b9f5eea77e","isrc":"DKUM72500222","name":"Lidt Luv (feat. andreas odbjerg, Artigeardit & Lea Romea)","registered_at":"2026-06-02T00:05:48Z","spotify_id":"2pWH0bLNfi0IW2ViBP64Jr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae8e75002f3f40941fd30c7f51bf4240992737d458841232882e2b9f5eea77e. 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/2pWH0bLNfi0IW2ViBP64Jr.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/2pWH0bLNfi0IW2ViBP64Jr.
Før Du Går (feat. Sira Jovina & Noah Carter)
{"copyright_id":"0x6701e4921ff100cf14eb2c86452a36087c72f6a1ca31e38345e3197f44fc4f95","isrc":"DKUM72500223","name":"Før Du Går (feat. Sira Jovina & Noah Carter)","registered_at":"2026-06-02T00:46:28Z","spotify_id":"4XB1UFXGF8fpk4EWtQnqBB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6701e4921ff100cf14eb2c86452a36087c72f6a1ca31e38345e3197f44fc4f95. 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/4XB1UFXGF8fpk4EWtQnqBB.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/4XB1UFXGF8fpk4EWtQnqBB.