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 0xb25bf88c135993855c8cd485b9e007ecc9c62b2534e12c760e728cc59fd8987f. 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/e38935ba-6708-42d6-a942-a92869170b38.json and https://artists.proofprofile.net/proofs/artist/e38935ba-6708-42d6-a942-a92869170b38.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 0x43d5b14131540f6f490471ce29e408c931d8d1df8acca185b2eee9ed60c2d7eb. 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/1wWl2ugWA4jAL9ukAY3I19.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/1wWl2ugWA4jAL9ukAY3I19.
{"copyright_id":"0x76176c6e2cf5c2c698d95b8e8580b36e2ea4037e95aeab1738c71c2b9b228eba","isrc":"GB45A2400037","name":"Long Time No See","registered_at":"2026-06-09T19:22:47Z","spotify_id":"46frAQwKE8iYRur0JhLKzR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76176c6e2cf5c2c698d95b8e8580b36e2ea4037e95aeab1738c71c2b9b228eba. 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/46frAQwKE8iYRur0JhLKzR.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/46frAQwKE8iYRur0JhLKzR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1ad35373efe5a76b1a7992affa7bc258911dee8cdbdfe902f562ce585372e3. 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/7KhBZcGrUCadNKuJKSfofE.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/7KhBZcGrUCadNKuJKSfofE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0423ce8b81217f33b8077158817ea8401666e3a031675a83599bd0151c862ec. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0u7mvhAFlTRh2r3gEwxqL9.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/0u7mvhAFlTRh2r3gEwxqL9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38f2cab49696dd54d08ace010837271c0a0004950c0ed7021852e4def2593b8. 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/4aThYhxZNmilfOIJ3ZJR4R.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/4aThYhxZNmilfOIJ3ZJR4R.
{"copyright_id":"0xc5b3d6cf4af16862001ed3c7ff8d47e9db3c38219009fd06c56ec5fd79131eb5","isrc":"GB45A2400167","name":"Smoking Endo","registered_at":"2026-06-08T22:10:49Z","spotify_id":"6kn8qLARnVmnkIbTOWd1GM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b3d6cf4af16862001ed3c7ff8d47e9db3c38219009fd06c56ec5fd79131eb5. 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/6kn8qLARnVmnkIbTOWd1GM.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/6kn8qLARnVmnkIbTOWd1GM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f9118e976f7c5f8181cd1436e0bdda3e26ffd2bba97c0e3959f15517b05b48. 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/6rdyjZMs5HizQzDFSKYv8n.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/6rdyjZMs5HizQzDFSKYv8n.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1ad35373efe5a76b1a7992affa7bc258911dee8cdbdfe902f562ce585372e3. 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/3weHplk9YWH4fvjFUyCQL5.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/3weHplk9YWH4fvjFUyCQL5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf63e4fb7ff687efb3ba1d0d2f91c84b93a0f404087aab081d79f16329bc63ec. 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/378Q37kUge9fFh7bJ9XLIF.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/378Q37kUge9fFh7bJ9XLIF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4047514df5d51a889c2eee268b1dbf4d13dfca61d3dc23313381a103524350. 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/44znn7LeZ0xVZBjvoVdZ3U.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/44znn7LeZ0xVZBjvoVdZ3U.
{"copyright_id":"0x76176c6e2cf5c2c698d95b8e8580b36e2ea4037e95aeab1738c71c2b9b228eba","isrc":"GB45A2400037","name":"Long Time No See","registered_at":"2026-06-09T19:22:47Z","spotify_id":"1rB3lWraoCZe07omzRKeZn","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76176c6e2cf5c2c698d95b8e8580b36e2ea4037e95aeab1738c71c2b9b228eba. 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/1rB3lWraoCZe07omzRKeZn.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/1rB3lWraoCZe07omzRKeZn.
{"copyright_id":"0x2dc76609384be4c3ce1dd98211a7b6d2b1ceca73a29b3f6cc0461d2edc7926e4","isrc":"GB45A2400171","name":"Sweet Tooth","registered_at":"2026-06-11T13:43:48Z","spotify_id":"5ME9QpUtZjYDWqLBoch20A","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc76609384be4c3ce1dd98211a7b6d2b1ceca73a29b3f6cc0461d2edc7926e4. 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/5ME9QpUtZjYDWqLBoch20A.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/5ME9QpUtZjYDWqLBoch20A.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe339f9d4dca4db9ea8829943d13086a79b93c24393c7d20db078aab142ec7acb. 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/4r3nh5HmovHvBEdYs9FPfV.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/4r3nh5HmovHvBEdYs9FPfV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9493ac1b21a9dc835fe70dcf7fd8b68c9a2f883057675fdcba8d0dbbe34ff3e6. 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/3UM9SEwGK1Dm9UbG6fpzcH.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/3UM9SEwGK1Dm9UbG6fpzcH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0423ce8b81217f33b8077158817ea8401666e3a031675a83599bd0151c862ec. 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/1QsELd32Ff1U3zgmKiQYoI.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/1QsELd32Ff1U3zgmKiQYoI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7c1f3e153a18c9ef630f33e2ee45308546a91c099455e092ec9a9bf2778de5. 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/19B8Hg0gCarZPO4tWd8n6r.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/19B8Hg0gCarZPO4tWd8n6r.
{"copyright_id":"0x87b39bc1bc510a2643adf0de3ffff89654a2de67b9c036623b60b1d209d864c9","isrc":"USZXT2351366","name":"BROKEN BONES (with Arz & Youngs Teflon)","registered_at":"2026-06-20T04:59:58Z","spotify_id":"6HZ8Vyxt8XvjnINAw6hFoy","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b39bc1bc510a2643adf0de3ffff89654a2de67b9c036623b60b1d209d864c9. 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/6HZ8Vyxt8XvjnINAw6hFoy.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/6HZ8Vyxt8XvjnINAw6hFoy.
{"copyright_id":"0xcf98bac7d785fa511591cc6e545470a85a064c4bc77079e0ad19f09e7bfaad6e","isrc":"DGA082293006","name":"Smoke & Mirrors","registered_at":"2026-06-07T14:41:45Z","spotify_id":"6H7gA6NZbDJLvcQnhq8QeJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf98bac7d785fa511591cc6e545470a85a064c4bc77079e0ad19f09e7bfaad6e. 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/6H7gA6NZbDJLvcQnhq8QeJ.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/6H7gA6NZbDJLvcQnhq8QeJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb877d1fbca8b3a9508e3c6dcbb6054bc7272ee84969e9b9f08429f65034ffd75. 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/0XpMPVilzy675zPWVvj3Pl.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/0XpMPVilzy675zPWVvj3Pl.
{"copyright_id":"0xd7148b5824e54273aabd3581ffccf384a6aae063e194ca7e6f24c0c787ccfed2","isrc":"QZJ842004104","name":"Crush (feat. Arz & Journey Montana)","registered_at":"2026-06-10T03:09:49Z","spotify_id":"5geeOqQjOgXfqAwd7bidM7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7148b5824e54273aabd3581ffccf384a6aae063e194ca7e6f24c0c787ccfed2. 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/5geeOqQjOgXfqAwd7bidM7.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/5geeOqQjOgXfqAwd7bidM7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f08bd2785fa6936d6b36581bc50241f6da5f714f892f67326c84a5b579e2c7. 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/6CIjM3kRfPFFsFPlCtHkW1.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/6CIjM3kRfPFFsFPlCtHkW1.