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 0xabb914df09540719d6cf75fd0377ab4189f2abc1dec9f765c533c8b9c0ccf02e. 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/c3516bae-4727-416c-a246-c3b36a2302cb.json and https://artists.proofprofile.net/proofs/artist/c3516bae-4727-416c-a246-c3b36a2302cb.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 0xd2e41e7a296759e0263eeeb2517f532e20097867ffc556fb755666543862a6eb. 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/6uZOUCeRMf1XzwRoXj4MgN.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/6uZOUCeRMf1XzwRoXj4MgN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6892464dd682d9949669e22ef75398de42647c266a4b19e43e66cb3aa763acfe. 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/59sSH85je4qJRCyIboqOR2.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/59sSH85je4qJRCyIboqOR2.
{"copyright_id":"0x7bab4c487417afc2d8e9884efd649194da12c10df4862a9c21bd7ba400fad065","isrc":"USUM72103469","name":"7th Heaven","registered_at":"2026-06-04T16:20:33Z","spotify_id":"4dtZRUQCZJFvykWMxxfbCt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bab4c487417afc2d8e9884efd649194da12c10df4862a9c21bd7ba400fad065. 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/4dtZRUQCZJFvykWMxxfbCt.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/4dtZRUQCZJFvykWMxxfbCt.
THE STAFF BAND OF THE NORWEGIAN ARMED FORCES
{"copyright_id":"0x5dcde4bb6063aa00d44a889559bcac38530e40e8dc50adb4c7d31f4fbc2d88d2","isrc":"NOFMK1801010","name":"It's Magic","registered_at":"2026-06-09T18:38:49Z","spotify_id":"4XmbASayT4DJK4G8bX7Cfn","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dcde4bb6063aa00d44a889559bcac38530e40e8dc50adb4c7d31f4fbc2d88d2. 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/4XmbASayT4DJK4G8bX7Cfn.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/4XmbASayT4DJK4G8bX7Cfn.
{"copyright_id":"0x0affddf7d12e08e218d64cd7b21caca332dc4d7aa3a148c92e2a3b59c4facce2","isrc":"NOFMK1801020","name":"What Is Life","registered_at":"2026-06-05T21:45:34Z","spotify_id":"56HtYR1edAzWbJP9os5nXc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0affddf7d12e08e218d64cd7b21caca332dc4d7aa3a148c92e2a3b59c4facce2. 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/56HtYR1edAzWbJP9os5nXc.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/56HtYR1edAzWbJP9os5nXc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf226ca872e369322d9bb17d5691e7741b7e0e7942af98557ab3b72387a0b9dbb. 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/6UFZBi0wRmbIUaHCZq506R.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/6UFZBi0wRmbIUaHCZq506R.
{"copyright_id":"0xc51dad1cca4a56c1051b225812e975aaa1aec2f8ccf42c66f83451100cdef7fe","isrc":"NOFMK1801040","name":"Waltz for Debby","registered_at":"2026-06-11T11:26:18Z","spotify_id":"4u7pNhD5GxSrcjoCC0v16c","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51dad1cca4a56c1051b225812e975aaa1aec2f8ccf42c66f83451100cdef7fe. 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/4u7pNhD5GxSrcjoCC0v16c.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/4u7pNhD5GxSrcjoCC0v16c.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697f8a49f362cd02d2bc04faea3c918aed450274f693ec03fd31e3275c7580c3. 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/0XGUT6zhrSjW3FpRSwOBOA.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/0XGUT6zhrSjW3FpRSwOBOA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab8cc31f24c6ecccd40b59e454471d1adff75426c04bb0946e4199680eea385. 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/0nVTLlnBjkLglH8IXQGX3T.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/0nVTLlnBjkLglH8IXQGX3T.
{"copyright_id":"0xfded618234b378018c6b90dbc2d94c33935ebb3622024716264e7bed3b1e8b4d","isrc":"NOFMK1801070","name":"Fly Me to the Moon","registered_at":"2026-06-07T20:25:09Z","spotify_id":"3gWbsA8tzrqZGUC5iEXMvB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfded618234b378018c6b90dbc2d94c33935ebb3622024716264e7bed3b1e8b4d. 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/3gWbsA8tzrqZGUC5iEXMvB.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/3gWbsA8tzrqZGUC5iEXMvB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed09d591e9796439161914ca02da0b62d831a7351da0b8e64c28b42942245dc. 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/0ZoAS1uSoCP8ifthTH40TD.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/0ZoAS1uSoCP8ifthTH40TD.
{"copyright_id":"0xb4f223bba241e6eeb7585c953aff575f3aaa0763e2ad6d871b1e634f1a2f74ad","isrc":"NOFMK1801090","name":"Line for Lyons","registered_at":"2026-06-20T07:14:27Z","spotify_id":"6mHQfouVjG24hUKtV6EHh4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f223bba241e6eeb7585c953aff575f3aaa0763e2ad6d871b1e634f1a2f74ad. 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/6mHQfouVjG24hUKtV6EHh4.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/6mHQfouVjG24hUKtV6EHh4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77942cf8a39800c436082f3550b76d7308c7c16049df424786b1183f99e596f. 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/0VRiu4hvoMnl7lIk3new6O.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/0VRiu4hvoMnl7lIk3new6O.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25cc82ae4c97551789507073bd0951b10deac0d2d9b46bdfb61732c2b6559841. 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/2KfooBwZbXKEBmUb8zHMOS.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/2KfooBwZbXKEBmUb8zHMOS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccbbb3606118f9eaa6ee38345d134497970388121110a5f6c6a582ff545dc41a. 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/51ZkBhML2479F3UXslfUyS.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/51ZkBhML2479F3UXslfUyS.
{"copyright_id":"0xbb9cb3d4f4a0e88796dc2c2be9a00028bdea69bf614f45c7a613fced007b7e69","isrc":"NOFMK1801130","name":"Answer Me, My Love","registered_at":"2026-06-11T11:26:46Z","spotify_id":"461AlK3W5bRS0LaU2TPJWf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9cb3d4f4a0e88796dc2c2be9a00028bdea69bf614f45c7a613fced007b7e69. 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/461AlK3W5bRS0LaU2TPJWf.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/461AlK3W5bRS0LaU2TPJWf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb83449f7d59a6073e50545ad3dce7be096ec3b550c9b61e7ad493802b11a0f9. 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/1mLuclMX2IMqU5ipGR8wbn.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/1mLuclMX2IMqU5ipGR8wbn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b2fbe654445576be78475242df463b67e0afd19b06d8b03915dd181973b21f. 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/4X9yUV9RSsOyHNCg5jeWm3.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/4X9yUV9RSsOyHNCg5jeWm3.
{"copyright_id":"0xa77a896c934c1231cb68e8a1681fcf1121eb2f8f3b5916b3405bcbe9d215ef79","isrc":"NOFMK1801160","name":"Can't Help Falling in Love","registered_at":"2026-06-06T05:00:23Z","spotify_id":"7AihmBomHw4fd89DZjFY17","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77a896c934c1231cb68e8a1681fcf1121eb2f8f3b5916b3405bcbe9d215ef79. 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/7AihmBomHw4fd89DZjFY17.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/7AihmBomHw4fd89DZjFY17.
{"copyright_id":"0x4bfe3d402dd86304051182f97c5c1df23ceffa74e43bf936864fc64509cee0c1","isrc":"NOAAC1900076","name":"Above The Water (feat. Angelina Jordan)","registered_at":"2026-06-06T18:48:12Z","spotify_id":"0gQaoqUVaUO0hTyyyr2FkT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bfe3d402dd86304051182f97c5c1df23ceffa74e43bf936864fc64509cee0c1. 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/0gQaoqUVaUO0hTyyyr2FkT.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/0gQaoqUVaUO0hTyyyr2FkT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfae2b8c12c00f0930f8db888e7a35537c7af84c6733a044babc496a9bbd177. 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/2WyrSAMWDXL2UosBNVuUVc.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/2WyrSAMWDXL2UosBNVuUVc.
{"copyright_id":"0x0affddf7d12e08e218d64cd7b21caca332dc4d7aa3a148c92e2a3b59c4facce2","isrc":"NOFMK1801020","name":"What Is Life","registered_at":"2026-06-05T21:45:34Z","spotify_id":"5liKE49MGCL0t5Md4MrjNY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0affddf7d12e08e218d64cd7b21caca332dc4d7aa3a148c92e2a3b59c4facce2. 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/5liKE49MGCL0t5Md4MrjNY.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/5liKE49MGCL0t5Md4MrjNY.
{"copyright_id":"0xef53d7cdb2e70189a9b28e559c16bf8232738694babcec6be8fee58cf659fe4d","isrc":"CHB701400043","name":"White Christmas","registered_at":"2026-06-10T06:26:37Z","spotify_id":"4XORe4COXS6Auh6dvL1bKp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef53d7cdb2e70189a9b28e559c16bf8232738694babcec6be8fee58cf659fe4d. 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/4XORe4COXS6Auh6dvL1bKp.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/4XORe4COXS6Auh6dvL1bKp.
{"copyright_id":"0x33a1b0186cdfe2c59478ef545b5f40f16a735373d86adb3555fd85b339ce6853","isrc":"CHB701400044","name":"I Saw Mommy Kissing Santa Claus","registered_at":"2026-06-18T19:23:06Z","spotify_id":"6UcI5aibzK9R4hkOe8lEWg","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a1b0186cdfe2c59478ef545b5f40f16a735373d86adb3555fd85b339ce6853. 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/6UcI5aibzK9R4hkOe8lEWg.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/6UcI5aibzK9R4hkOe8lEWg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ab1ce22d3305c93d9abe4c1387e5674398030c720467cc7695cf63f60286e5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6x9qxoySyswNZjEFVv7RTt.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/6x9qxoySyswNZjEFVv7RTt.