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 0xc5e9b6dc79e100f86ae2811ab143d5d078fb3627d8921e0ef39d1d989379cdec. 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/fd4b4f52-2288-4b5d-8dcd-2698b7bdc1ae.json and https://artists.proofprofile.net/proofs/artist/fd4b4f52-2288-4b5d-8dcd-2698b7bdc1ae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x7f495fe49fb091b20ce00174b070762754f38de1d40ebe5c78a540de94efdfdf","isrc":"DKFJ42100491","name":"Out Of Love (feat. Kidd Thorn)","registered_at":"2026-06-22T06:29:19Z","spotify_id":"5wdTNKfaqK7fbCKmla8CvJ","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 0x7f495fe49fb091b20ce00174b070762754f38de1d40ebe5c78a540de94efdfdf. 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/5wdTNKfaqK7fbCKmla8CvJ.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/5wdTNKfaqK7fbCKmla8CvJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffa468c70197ff41af35313d5e6caa357b28953dd9d427d3fe79d80571bd243. 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/4OFMvSVvoH3Z4OL1ldLUGj.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/4OFMvSVvoH3Z4OL1ldLUGj.
{"copyright_id":"0x005af7e2c845e99dc96cc34b021f01fdc119e3c36ed219452923bd24ccd7c287","isrc":"NOEPO2100001","name":"Cry Just A Little (feat. Laura White)","registered_at":"2026-06-09T07:05:33Z","spotify_id":"5dgu8nkYxrVy9Jaf11w02f","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005af7e2c845e99dc96cc34b021f01fdc119e3c36ed219452923bd24ccd7c287. 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/5dgu8nkYxrVy9Jaf11w02f.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/5dgu8nkYxrVy9Jaf11w02f.
{"copyright_id":"0xdbbe41f977c9e40df0ce3ff3be67d3543929afa0b4e303a0fddb3c01b10b137d","isrc":"NOEPO2000028","name":"One More Time","registered_at":"2026-06-09T14:58:25Z","spotify_id":"4I5uxxv2gbOCUobUdp9USz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbe41f977c9e40df0ce3ff3be67d3543929afa0b4e303a0fddb3c01b10b137d. 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/4I5uxxv2gbOCUobUdp9USz.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/4I5uxxv2gbOCUobUdp9USz.
{"copyright_id":"0xe11111f864f8182cee6757c96fc262cd0019beb5a76c9c17cec13e9f3e71699b","isrc":"NOEPO2000009","name":"I Should Go Home (feat. Philip Rustad)","registered_at":"2026-06-05T22:04:39Z","spotify_id":"2IH2C9uhbhvfMnUbfvdHlL","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11111f864f8182cee6757c96fc262cd0019beb5a76c9c17cec13e9f3e71699b. 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/2IH2C9uhbhvfMnUbfvdHlL.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/2IH2C9uhbhvfMnUbfvdHlL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d9b6d5f0e1aee0eccdab927863fa23e16291e6f8c03f3557d8988351159549. 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/2fYhuc5su16bqVKaMG0O08.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/2fYhuc5su16bqVKaMG0O08.
{"copyright_id":"0x2cf1f985d60ae5803d3298de26e361cdae097cf694e744986da06f16f9e765fe","isrc":"NOEPO1900010","name":"Tear Me Down (feat. Philip Rustad)","registered_at":"2026-06-04T08:51:19Z","spotify_id":"71UYuIZf0TeXAjyy72COVr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf1f985d60ae5803d3298de26e361cdae097cf694e744986da06f16f9e765fe. 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/71UYuIZf0TeXAjyy72COVr.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/71UYuIZf0TeXAjyy72COVr.
{"copyright_id":"0x542706bc1b6ec42020e0b841f4dc9c017dbf9ec4f862631de317135c5e09bd93","isrc":"TCAEK1925075","name":"Death of Me (Davai Remix)","registered_at":"2026-06-09T23:28:18Z","spotify_id":"6mj5yKntIEQwNOIFeT9Muw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542706bc1b6ec42020e0b841f4dc9c017dbf9ec4f862631de317135c5e09bd93. 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/6mj5yKntIEQwNOIFeT9Muw.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/6mj5yKntIEQwNOIFeT9Muw.
{"copyright_id":"0xb14cc0a2681239d6ab7187d20d95eb0ead44f7f66a54ff1825e87bdc5641a5a4","isrc":"NOEPO1900005","name":"Somebody I'm Not","registered_at":"2026-06-09T19:26:44Z","spotify_id":"5lAMOiZhF8pq4wO3uHREaY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14cc0a2681239d6ab7187d20d95eb0ead44f7f66a54ff1825e87bdc5641a5a4. 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/5lAMOiZhF8pq4wO3uHREaY.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/5lAMOiZhF8pq4wO3uHREaY.
{"copyright_id":"0x8c017fb73e7f8ef3f99bee8ddd7b183d9c982e5e3a8d2c69e8226c6d02ece27c","isrc":"DKFJ41900354","name":"Parked Outside","registered_at":"2026-06-07T02:09:14Z","spotify_id":"40cim3fOVMaidupbtjBta1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c017fb73e7f8ef3f99bee8ddd7b183d9c982e5e3a8d2c69e8226c6d02ece27c. 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/40cim3fOVMaidupbtjBta1.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/40cim3fOVMaidupbtjBta1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7e6fa86851d32d0cf73db3190f179fd1e93fc6920182dc75ce40756f4d9180. 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/1oXyjAY4Zxl3oABikQmL6c.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/1oXyjAY4Zxl3oABikQmL6c.
{"copyright_id":"0xa17e2b2d21191ca9e5a14003acc62ef15b00e83a5f051d4821675487348c496a","isrc":"NOEPO1800024","name":"Cry Like Kim K (with Lisa Ajax)","registered_at":"2026-06-08T19:55:24Z","spotify_id":"1ZSSNLEDzs3yFDwM85HDHU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17e2b2d21191ca9e5a14003acc62ef15b00e83a5f051d4821675487348c496a. 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/1ZSSNLEDzs3yFDwM85HDHU.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/1ZSSNLEDzs3yFDwM85HDHU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dbe43cee6d15d0d29bb68761423c897242b10e2ef63bcc1a76cae043e56d6f. 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/4XuyZplbQFeyqnOybpcyyy.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/4XuyZplbQFeyqnOybpcyyy.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4f34c8915a6b4603dc32b11ca612b725aceda260d7fb04592854be50bd23a7. 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/164C9bSF4ryqWXI4XgxTE0.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/164C9bSF4ryqWXI4XgxTE0.