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 0x968993c40fab4242ef2a5eaea1180dd58bc055d31289d3dad00b999a9e0034d6. 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/61e31fe3-5019-444b-9d81-6aea7d6181f2.json and https://artists.proofprofile.net/proofs/artist/61e31fe3-5019-444b-9d81-6aea7d6181f2.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 0x5cb6b5f43dca7357177861b0085b147079d444178ca839d28e5060d48ccd77eb. 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/33oEdaCuPKsgDjvRrHOFZU.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/33oEdaCuPKsgDjvRrHOFZU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8fcb1a7050ff3904768155bea528775471b05f41158d0200093a4d4f2acb7d. 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/7Ed479R0BSYHpqha6JEojA.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/7Ed479R0BSYHpqha6JEojA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8474e6854fd82fcf42a82901f97d89ea726190c2dd82005541ce257a5367a87. 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/02yYxxU7lRPeoWuWN0bPuw.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/02yYxxU7lRPeoWuWN0bPuw.
{"copyright_id":"0x195a0b8aebde5b41442c815041ef8fd011fe4978bb050dda29d27368b4db4e5b","isrc":"NZKF01000023","name":"On the Road Again - Radio Edit","registered_at":"2026-06-08T05:02:17Z","spotify_id":"5IP8tR7brtHwmXZMGWOKl5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195a0b8aebde5b41442c815041ef8fd011fe4978bb050dda29d27368b4db4e5b. 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/5IP8tR7brtHwmXZMGWOKl5.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/5IP8tR7brtHwmXZMGWOKl5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7312365c9a6b211a1d0b2405c7d3dbf7ab8abb220b69cb73680a0285e70bbfb8. 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/75xL8GcxdWeAKYNOyWATyW.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/75xL8GcxdWeAKYNOyWATyW.
{"copyright_id":"0x30116abbc6c4b6e4415afeaf7ba328490f740dd6b355dfd5c0798361abfea984","isrc":"NZMU00600003","name":"Who You With","registered_at":"2026-06-04T08:26:58Z","spotify_id":"1n98zPWINRiuWCvRaChRd4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30116abbc6c4b6e4415afeaf7ba328490f740dd6b355dfd5c0798361abfea984. 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/1n98zPWINRiuWCvRaChRd4.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/1n98zPWINRiuWCvRaChRd4.
{"copyright_id":"0xc36a2ef0a6760656c318eaa072e3179faade249879bb74bccec93e4dd93f3628","isrc":"NZKF01000013","name":"Lead Us","registered_at":"2026-06-08T01:32:06Z","spotify_id":"4ISfLebxBJGFqgQ6hyHjNd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36a2ef0a6760656c318eaa072e3179faade249879bb74bccec93e4dd93f3628. 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/4ISfLebxBJGFqgQ6hyHjNd.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/4ISfLebxBJGFqgQ6hyHjNd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314fc6ba2df23ec9750be3c2b6b3667eaa4b65eb23bde6b2115cdafb959ebd3c. 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/6YvVOcxNLKl0oA1hydPFPz.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/6YvVOcxNLKl0oA1hydPFPz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68e2446012ddce22f644f7ad3e5c7b1c4cdcae924d65e613ecc94b0f7188cf0. 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/7u4pe8R8Ti1RMVTh7036Hi.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/7u4pe8R8Ti1RMVTh7036Hi.
{"copyright_id":"0xd1cfa7b51470eab4f00e5084ce3547c4787b4d4cf3f3c9ce1644ffe7206ff270","isrc":"NZKF01000015","name":"Groove Again","registered_at":"2026-06-05T19:36:08Z","spotify_id":"29lRjDpPZWHtT2nEEuBLBf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1cfa7b51470eab4f00e5084ce3547c4787b4d4cf3f3c9ce1644ffe7206ff270. 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/29lRjDpPZWHtT2nEEuBLBf.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/29lRjDpPZWHtT2nEEuBLBf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ae4d761393e03f88ce1ff1b3f34ba590f05e3c410ce420dc4cb0a03806a368. 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/3wFP6syDhdyGsvMy7ufKVE.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/3wFP6syDhdyGsvMy7ufKVE.
{"copyright_id":"0xbb5c7f7484ea6a4cfbed4349d3ddda00206315dd208f5e5d21732207fcca0fb5","isrc":"NZKF01000016","name":"Feels Like","registered_at":"2026-06-04T09:40:30Z","spotify_id":"1wlaTyyXHYuUHWn5U6DqYV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5c7f7484ea6a4cfbed4349d3ddda00206315dd208f5e5d21732207fcca0fb5. 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/1wlaTyyXHYuUHWn5U6DqYV.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/1wlaTyyXHYuUHWn5U6DqYV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd2d831d06e2b151a4e1ec4d45593799af54162b502e6fdb42f537bc2a11106. 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/3yaYUPZyCpdG9Kh5fLOT21.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/3yaYUPZyCpdG9Kh5fLOT21.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a13af177cb068edd2c77ae88959292d0e04b2e9251b70c83b07ef6eb0bc1bb. 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/4um6XNDMox5hT3CqAjK9AQ.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/4um6XNDMox5hT3CqAjK9AQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3b5617766ec9308eeb30523874f2ad5843d1117fb41f6f3636ae0c678c4be9. 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/6LrurNYfLGOgS88xzRBMn8.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/6LrurNYfLGOgS88xzRBMn8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4ce793f63e823509fe577950431069eab6635d3138688e5bb21e4477b86477. 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/3EwbtlqJuSsJdYy30vdRVu.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/3EwbtlqJuSsJdYy30vdRVu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e36b329eb23b6be0e050cf17bdfaa3a30fce161954a205d0653f5eb978afaa0. 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/0mnBhXXnKQoCCXKF5L45ad.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/0mnBhXXnKQoCCXKF5L45ad.
{"copyright_id":"0x6d5347e3b9a5615c733f7ce0a0dc6c39c14fef4dd89a883ea6866c09df0b7bc5","isrc":"JMA271501734","name":"Hey Girl - Alternate Version","registered_at":"2026-06-07T08:45:49Z","spotify_id":"4KSIsQZs7lqM0flTkZVern","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5347e3b9a5615c733f7ce0a0dc6c39c14fef4dd89a883ea6866c09df0b7bc5. 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/4KSIsQZs7lqM0flTkZVern.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/4KSIsQZs7lqM0flTkZVern.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66cf0fbd99cb73262182d1eed74867f844464d5b2e6f562e4473529f31ee455. 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/2uPgVhGfPSudi26fTZu6We.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/2uPgVhGfPSudi26fTZu6We.
{"copyright_id":"0x22d6d8abb0447f1953a76e7444a1e32e6ebdad2ab48a34ba38e3bbf4a97df3aa","isrc":"NZKF00700001","name":"Meant to Be","registered_at":"2026-06-05T15:28:21Z","spotify_id":"5TD1sxVGRfU7tOjMx65Hvx","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d6d8abb0447f1953a76e7444a1e32e6ebdad2ab48a34ba38e3bbf4a97df3aa. 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/5TD1sxVGRfU7tOjMx65Hvx.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/5TD1sxVGRfU7tOjMx65Hvx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc099522a0d2594a9df0c9379cf5fcb69b9354a7af49c30ca9ae5afed33246022. 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/5YOatMvQzFplLAfjaqk92o.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/5YOatMvQzFplLAfjaqk92o.