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 0x6aa705945a5615fada740296f781904481f9b0ac0852139bd2af6249df80503d. 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/b1ed7181-83e5-48a2-afc6-ad4e9a78cdd9.json and https://artists.proofprofile.net/proofs/artist/b1ed7181-83e5-48a2-afc6-ad4e9a78cdd9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x4ba59e6e9a2a2ff28fbfb84f27a46a4d4d5ffab8710b8c0076a838155705a8ce","isrc":"USRC12000199","name":"Arya (feat. A$AP Rocky)","registered_at":"2026-06-04T06:48:27Z","spotify_id":"0Rq6JJwpZ9f1SU6Cfhgjv7","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 0x4ba59e6e9a2a2ff28fbfb84f27a46a4d4d5ffab8710b8c0076a838155705a8ce. 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/0Rq6JJwpZ9f1SU6Cfhgjv7.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/0Rq6JJwpZ9f1SU6Cfhgjv7.
{"copyright_id":"0x2e55e38bfeb971a2136b8284c659a1dea297f7af7ef6e9b752a60421ff27cade","isrc":"USUM72202078","name":"Want It Bad (with Nigo)","registered_at":"2026-06-04T14:25:37Z","spotify_id":"6PzDwzYlw2gH6pYFQqNnFA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e55e38bfeb971a2136b8284c659a1dea297f7af7ef6e9b752a60421ff27cade. 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/6PzDwzYlw2gH6pYFQqNnFA.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/6PzDwzYlw2gH6pYFQqNnFA.
{"copyright_id":"0x12c2a901c16f57b13acc7bbfab14f4d39b1e59ef758385e6f73319bb43cb45fe","isrc":"USUM72202697","name":"Hear Me Clearly (with Nigo)","registered_at":"2026-06-04T14:33:46Z","spotify_id":"0WxzTL8Ptu103bVeYcBzoS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c2a901c16f57b13acc7bbfab14f4d39b1e59ef758385e6f73319bb43cb45fe. 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/0WxzTL8Ptu103bVeYcBzoS.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/0WxzTL8Ptu103bVeYcBzoS.
Lost and Found Freestyle 2019 (with Tyler, The Creator & Nigo)
{"copyright_id":"0xa9802287162b921c5869192f9cf7ab5a65b1c1432d80ed072cffa032a95226cf","isrc":"USUM72204454","name":"Lost and Found Freestyle 2019 (with Tyler, The Creator & Nigo)","registered_at":"2026-06-04T04:13:28Z","spotify_id":"5x8NgG7Ya18m9wafOvvWYk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9802287162b921c5869192f9cf7ab5a65b1c1432d80ed072cffa032a95226cf. 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/5x8NgG7Ya18m9wafOvvWYk.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/5x8NgG7Ya18m9wafOvvWYk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60639181c956d6341d74e09295ee34ef601c81a3db2eb674582951287ea3839. 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/1NxZp8uYShqpkxcyaaLUKs.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/1NxZp8uYShqpkxcyaaLUKs.
{"copyright_id":"0x506b4d951fbced525574387c2d5651f329051116b9693dda921acef7ad199b73","isrc":"USUM72204461","name":"Functional Addict (with Gunna & Nigo)","registered_at":"2026-06-04T16:39:27Z","spotify_id":"6DmXZWftfFvqdGQlQM3rVN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506b4d951fbced525574387c2d5651f329051116b9693dda921acef7ad199b73. 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/6DmXZWftfFvqdGQlQM3rVN.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/6DmXZWftfFvqdGQlQM3rVN.
{"copyright_id":"0x2e55e38bfeb971a2136b8284c659a1dea297f7af7ef6e9b752a60421ff27cade","isrc":"USUM72202078","name":"Want It Bad (with Nigo)","registered_at":"2026-06-04T14:25:37Z","spotify_id":"5tT12IDSmVL2XoMfEzQ5rd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e55e38bfeb971a2136b8284c659a1dea297f7af7ef6e9b752a60421ff27cade. 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/5tT12IDSmVL2XoMfEzQ5rd.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/5tT12IDSmVL2XoMfEzQ5rd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033b283ee02c2c70390fe27c87e44554473793eb5647434bc1fd6449ab36829d. 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/7w469IMkHAEQd7qCRhCcsK.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/7w469IMkHAEQd7qCRhCcsK.
{"copyright_id":"0xbd79a5066133a9e10a4060529ada94c22421c2cdda806a4518f0c6ad7d5fad6c","isrc":"USUM72204449","name":"Paper Plates (with FERG & Nigo)","registered_at":"2026-06-06T09:16:18Z","spotify_id":"3bUBs8uaoDsb06MJsrEd6h","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd79a5066133a9e10a4060529ada94c22421c2cdda806a4518f0c6ad7d5fad6c. 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/3bUBs8uaoDsb06MJsrEd6h.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/3bUBs8uaoDsb06MJsrEd6h.
{"copyright_id":"0x12c2a901c16f57b13acc7bbfab14f4d39b1e59ef758385e6f73319bb43cb45fe","isrc":"USUM72202697","name":"Hear Me Clearly (with Nigo)","registered_at":"2026-06-04T14:33:46Z","spotify_id":"78kXNoO5fOeN3uoV3lUJZv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c2a901c16f57b13acc7bbfab14f4d39b1e59ef758385e6f73319bb43cb45fe. 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/78kXNoO5fOeN3uoV3lUJZv.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/78kXNoO5fOeN3uoV3lUJZv.
{"copyright_id":"0x96835ccff344f7bca69db7d8ca861de988b9afabcad21d8ad73d40e32c36f190","isrc":"USUM72202699","name":"Remember (with Nigo)","registered_at":"2026-06-04T06:57:17Z","spotify_id":"0PGRXJFSwpn5OAGFpEwiqK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96835ccff344f7bca69db7d8ca861de988b9afabcad21d8ad73d40e32c36f190. 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/0PGRXJFSwpn5OAGFpEwiqK.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/0PGRXJFSwpn5OAGFpEwiqK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6357bfea14b8e074186a7c4b0c893d58aeb1bdd5912735e7b0affbe7a99c9211. 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/39w2YI59aWcTSzdqana42B.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/39w2YI59aWcTSzdqana42B.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27483fa334c47da18b106f1c2b05780064ffc0345b72ac74d0f6e1fe60b4dea3. 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/6f44p3Kc4ayD9VtbC9Clkr.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/6f44p3Kc4ayD9VtbC9Clkr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880b58be2bc2264a1da974ec0d056d32495d6a2e6893c968a70fdac1c2495497. 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/0MVImzj1FLkm7N74PzBjWN.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/0MVImzj1FLkm7N74PzBjWN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fe2c48d9d5f79b6d52561281e94055c8f9f46f440129d16a70029455e4eaba. 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/41Y4FsrhWsZtprMMYPWuEw.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/41Y4FsrhWsZtprMMYPWuEw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb430af427c4e61b5dff537d9e7f63832327456804148ad6323200d53f8d75124. 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/5Fkp8thObogyTSfx5jqwSo.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/5Fkp8thObogyTSfx5jqwSo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccbab97ff643aec51b1f92d12791314e300a6e05551c404f9991cdb544ec0378. 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/5iLWapaddBejhbpgFl2MeV.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/5iLWapaddBejhbpgFl2MeV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7ef6e9384b98dea17ac9ce09848ef04364097e7b9f119f9a7929db1998bffc. 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/18I9TPCHnEQdqDznEJErhB.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/18I9TPCHnEQdqDznEJErhB.
{"copyright_id":"0x948ab247c9627cdf8ff02f54be45e3fba7594f061aba68312fc48cbd66fa00f1","isrc":"GBCPY0000024","name":"The Very Urgent Dub","registered_at":"2026-06-21T19:16:40Z","spotify_id":"2FFRT3j3ObqVlTukorHCiv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948ab247c9627cdf8ff02f54be45e3fba7594f061aba68312fc48cbd66fa00f1. 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/2FFRT3j3ObqVlTukorHCiv.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/2FFRT3j3ObqVlTukorHCiv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c7580507db0a64daa1f52c8a5a4d8cf4ee4c3550209e3560447010b1863188. 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/55D0obyytZAGKhHAOS3pw5.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/55D0obyytZAGKhHAOS3pw5.
{"copyright_id":"0xe6b773d8dced5e4bc6a842095634e00cf091c4bd2003ee6cddfcec7c976bffa7","isrc":"GBCPY0000026","name":"Jet Set","registered_at":"2026-06-28T01:54:37Z","spotify_id":"5X4GCT5oTQPo85pr5v4gK6","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b773d8dced5e4bc6a842095634e00cf091c4bd2003ee6cddfcec7c976bffa7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5X4GCT5oTQPo85pr5v4gK6.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/5X4GCT5oTQPo85pr5v4gK6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6357bfea14b8e074186a7c4b0c893d58aeb1bdd5912735e7b0affbe7a99c9211. 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/02WDt2eCNOU2mt0DF5w678.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/02WDt2eCNOU2mt0DF5w678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033b283ee02c2c70390fe27c87e44554473793eb5647434bc1fd6449ab36829d. 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/0ED7MSs8EDSxkdhYMtpoQA.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/0ED7MSs8EDSxkdhYMtpoQA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba59e6e9a2a2ff28fbfb84f27a46a4d4d5ffab8710b8c0076a838155705a8ce. 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/5JPtB3Wn3H4nXJhuFtvzak.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/5JPtB3Wn3H4nXJhuFtvzak.
{"copyright_id":"0x12c2a901c16f57b13acc7bbfab14f4d39b1e59ef758385e6f73319bb43cb45fe","isrc":"USUM72202697","name":"Hear Me Clearly (feat. Nigo)","registered_at":"2026-06-04T14:33:46Z","spotify_id":"0fOpKW6soqAbK8lvRXjhPg","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c2a901c16f57b13acc7bbfab14f4d39b1e59ef758385e6f73319bb43cb45fe. 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/0fOpKW6soqAbK8lvRXjhPg.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/0fOpKW6soqAbK8lvRXjhPg.
{"copyright_id":"0x12c2a901c16f57b13acc7bbfab14f4d39b1e59ef758385e6f73319bb43cb45fe","isrc":"USUM72202697","name":"Hear Me Clearly (feat. Nigo)","registered_at":"2026-06-04T14:33:46Z","spotify_id":"0KhsSvJUtckjP1X7e17SE3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c2a901c16f57b13acc7bbfab14f4d39b1e59ef758385e6f73319bb43cb45fe. 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/0KhsSvJUtckjP1X7e17SE3.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/0KhsSvJUtckjP1X7e17SE3.