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 0x8808537f320a637b2b6e2497822fb18db8a8990c84b0f0c0a86ed2488f312cdc. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f26cd86-5985-46c8-ac96-9dcd916b966b.json and https://artists.proofprofile.net/proofs/artist/9f26cd86-5985-46c8-ac96-9dcd916b966b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xb0e259df52bfa018ff27bef6623391a3cc1bec076ddacd8e08b84778d8fcde30","isrc":"DGA052294556","name":"OCD RIDDIM (Part 2)","registered_at":"2026-06-05T15:03:23Z","spotify_id":"6UaX2QFl9ePHMcRWkGY0Ab","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 0xb0e259df52bfa018ff27bef6623391a3cc1bec076ddacd8e08b84778d8fcde30. 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/6UaX2QFl9ePHMcRWkGY0Ab.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/6UaX2QFl9ePHMcRWkGY0Ab.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42144945bb99e180f31697edbcb21c9ddaa526896b0816d2250e57404d8813d9. 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/1zNkSbZA1lzuNHfvhKoooO.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/1zNkSbZA1lzuNHfvhKoooO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77469cb12ba87e6edc65c62d5ac396020dd5e24dbfe7d94f51df5aa6f4435eb7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0qa77cMJxLF5u6j9tR34dA.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/0qa77cMJxLF5u6j9tR34dA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b7081d7bd8eb0e2d286c997fc1f86b71ebfce9b24acad16fa4fd80b4bc9b56. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3sqEhdB9JlzKRQpI6s4GTN.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/3sqEhdB9JlzKRQpI6s4GTN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406d51efaf8cf99a2a1d34e71e304a698f32e88b29858c2becb72c8fff86d545. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/26Uk8dWO831amM234SZH2R.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/26Uk8dWO831amM234SZH2R.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930ba911891c9acaec25932c8faef52ea4995d0a0886f877fcd9ba6f1f48cc1f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0pMC4uTI02Ceqey7E75BjW.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/0pMC4uTI02Ceqey7E75BjW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e350b1f004a4ac5239cf4504e3533311f2772c3794e146bc4ed1a48526e12cf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3FQldc7omRQxSg5AY68UqC.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/3FQldc7omRQxSg5AY68UqC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aad04516e33058b6c47827a3112033fff0997d9794ed698de5fd259e0013d3d. 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/17d0HQCFQG4wCrPkT4Oatu.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/17d0HQCFQG4wCrPkT4Oatu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefde64bf893685e42dc01be6732970d970541c0e77e1cff3da8197f5913ed90c. 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/2mXZYJ4XD0SpOEdyaA37Gj.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/2mXZYJ4XD0SpOEdyaA37Gj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aad04516e33058b6c47827a3112033fff0997d9794ed698de5fd259e0013d3d. 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/0J7Out95l4D3BRrltSRX8v.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/0J7Out95l4D3BRrltSRX8v.
{"copyright_id":"0xc8fe1071005dfe7ee8fbb3fcf4efd596202955ad2a03c0bb598c09fe247cfe04","isrc":"GBUM71804832","name":"Pretty Girl","registered_at":"2026-06-05T21:48:24Z","spotify_id":"6mzuhkLnwRNcVVRrA4v1r1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fe1071005dfe7ee8fbb3fcf4efd596202955ad2a03c0bb598c09fe247cfe04. 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/6mzuhkLnwRNcVVRrA4v1r1.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/6mzuhkLnwRNcVVRrA4v1r1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b9b73b2867a618180e8c229950d917bfb9eace04058aba576bfc02b08b4b52. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6w8xtLz3U9QEtlm1V8uam8.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/6w8xtLz3U9QEtlm1V8uam8.
{"copyright_id":"0x5b66f559ccb7caddbba079b0c1dd9f07e5c1271ad2a17a9b739baea30df0d927","isrc":"GBBKS1600172","name":"Ring The Alarm","registered_at":"2026-06-08T19:32:59Z","spotify_id":"78XCDCAt1n5jQk2x5YRj5F","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b66f559ccb7caddbba079b0c1dd9f07e5c1271ad2a17a9b739baea30df0d927. 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/78XCDCAt1n5jQk2x5YRj5F.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/78XCDCAt1n5jQk2x5YRj5F.
{"copyright_id":"0xa3ce506f0b1a368c69eb89e0a59b2bb134f4d2040ac72790a13926ba6c0070b7","isrc":"QMDA72251624","name":"BROTHERHOOD (FEAT. TIGGS DA AUTHOR)","registered_at":"2026-06-19T10:25:02Z","spotify_id":"0nkcSN8PJE7GazzC7wXpQQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ce506f0b1a368c69eb89e0a59b2bb134f4d2040ac72790a13926ba6c0070b7. 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/0nkcSN8PJE7GazzC7wXpQQ.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/0nkcSN8PJE7GazzC7wXpQQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3919d3b1bde775f02fe089a2d63c2dac128fdf211ab65827179d7e8b805d4477. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5c8xOen1zam2YpEPRU3DZt.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/5c8xOen1zam2YpEPRU3DZt.
African Heatwave: Afrobeats Party Anthems
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3f791be0e18c4402aaed22760823ef0171e69ff6160807ca14dba106867d18. 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/0MlNlvOweI45Oo1FKHvceJ.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/0MlNlvOweI45Oo1FKHvceJ.
{"copyright_id":"0x7a133daf2b346fe7db33e8003f0f0dd9f1b0d2f490700d3f4cb73faf3ec4241e","isrc":"GBLFP1833053","name":"God Forgive Me","registered_at":"2026-06-25T15:54:13Z","spotify_id":"6I6UThiknqFPwlhr0pzwfG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a133daf2b346fe7db33e8003f0f0dd9f1b0d2f490700d3f4cb73faf3ec4241e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6I6UThiknqFPwlhr0pzwfG.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/6I6UThiknqFPwlhr0pzwfG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f960e7cb24441d8410115791cf40609d9574998018bac656b9b2e8d192b521c. 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/103XGn9SDuP1vxNsLlVh70.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/103XGn9SDuP1vxNsLlVh70.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f960e7cb24441d8410115791cf40609d9574998018bac656b9b2e8d192b521c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3q2aZ6tVVk7pPYdFbWMgiy.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/3q2aZ6tVVk7pPYdFbWMgiy.