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 0x7af86b9f5581719ccf99db262f676a805d72134b1897cc4958b5675c5d9feaae. 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/072a6ae3-ab13-48a1-bd08-655b1ac55f82.json and https://artists.proofprofile.net/proofs/artist/072a6ae3-ab13-48a1-bd08-655b1ac55f82.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Strange As It May Seem (feat. Bilal and Tiambe Lockhart)
{"copyright_id":"0xa725bcda4880b4425e6928ad23b97f37ac580e905ae8c21dcfd68795e2cf75ac","isrc":"FR4EO1400035","name":"Man Funk","registered_at":"2026-06-01T21:41:52Z","spotify_id":"1QQxrrABKbx5w4LIphElwb","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 0xa725bcda4880b4425e6928ad23b97f37ac580e905ae8c21dcfd68795e2cf75ac. 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/1QQxrrABKbx5w4LIphElwb.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/1QQxrrABKbx5w4LIphElwb.
{"copyright_id":"0xa725bcda4880b4425e6928ad23b97f37ac580e905ae8c21dcfd68795e2cf75ac","isrc":"FR4EO1400035","name":"Man Funk","registered_at":"2026-06-01T21:41:51Z","spotify_id":"5hzi3BwxDLopsyiexM7hYc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa725bcda4880b4425e6928ad23b97f37ac580e905ae8c21dcfd68795e2cf75ac. 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/5hzi3BwxDLopsyiexM7hYc.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/5hzi3BwxDLopsyiexM7hYc.
Heavenly Sweetness 15th Anniversary - Jazz
{"copyright_id":"0x220db6a3e0f9c991e17c6d1e95f1787999acebb71271a3baa659123b0eaadb53","isrc":"FR4EO1600019","name":"Give You Up","registered_at":"2026-06-10T14:13:16Z","spotify_id":"7Mm8e45jzXhbNPPGdrYLTQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220db6a3e0f9c991e17c6d1e95f1787999acebb71271a3baa659123b0eaadb53. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7Mm8e45jzXhbNPPGdrYLTQ.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/7Mm8e45jzXhbNPPGdrYLTQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb336ff4e04beb485f366d92b1f768d0bc9987e84856ad8b97bdca3fa6889679b. 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/2iows2VZ0GjxuiS3stUm9p.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/2iows2VZ0GjxuiS3stUm9p.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a411d10918c8b64c3a851c8d3d13e75c7b6532bb5b0b2728ace2b558aa30630. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3OYMsOjAdeleKMykwv24Kq.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/3OYMsOjAdeleKMykwv24Kq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323aa7be87307fa8169a1865b5a80486627b86e291abd4b9b4897a08583a2ae7. 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/3W7z4dQFAC1PuTQYMqJnKM.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/3W7z4dQFAC1PuTQYMqJnKM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f24b028266f120a525d68b7ea8cf40ec34d57da09f73c1385254ebb36878c2d. 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/6iWxjMVYkNjHqnxDlQvzfH.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/6iWxjMVYkNjHqnxDlQvzfH.
{"copyright_id":"0x220db6a3e0f9c991e17c6d1e95f1787999acebb71271a3baa659123b0eaadb53","isrc":"FR4EO1600019","name":"Give You Up","registered_at":"2026-06-10T14:13:16Z","spotify_id":"31jJ3uo9ZVlXgSKdBDdxJK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220db6a3e0f9c991e17c6d1e95f1787999acebb71271a3baa659123b0eaadb53. 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/31jJ3uo9ZVlXgSKdBDdxJK.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/31jJ3uo9ZVlXgSKdBDdxJK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb336ff4e04beb485f366d92b1f768d0bc9987e84856ad8b97bdca3fa6889679b. 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/7INsjANqf1wVXvll1sKv1v.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/7INsjANqf1wVXvll1sKv1v.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a411d10918c8b64c3a851c8d3d13e75c7b6532bb5b0b2728ace2b558aa30630. 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/6TVz7Mf1lVpZXcmlgBsyiC.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/6TVz7Mf1lVpZXcmlgBsyiC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323aa7be87307fa8169a1865b5a80486627b86e291abd4b9b4897a08583a2ae7. 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/2Gbuu4NB8X01DaX8Vf5HOx.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/2Gbuu4NB8X01DaX8Vf5HOx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbfce937297817f8695d5a6dc2daa6616098628370a57e3e79a6d2ba8fef7db. 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/4uX1A9UvoGCxZHU4kPeLBb.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/4uX1A9UvoGCxZHU4kPeLBb.
Day In Day Out - Florian Pellissier Extended Version
Day In Day Out (Florian Pellissier Extended Version)
{"copyright_id":"0xfad362ed5cce2a2fc00e2882581dbd2c76d78e449e0c73048cf4028bee9fae23","isrc":"FR4EO2300067","name":"Day In Day Out - Florian Pellissier Extended Version","registered_at":"2026-06-07T14:21:44Z","spotify_id":"2HCLYRJnXDMQ9yfjHIiL60","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad362ed5cce2a2fc00e2882581dbd2c76d78e449e0c73048cf4028bee9fae23. 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/2HCLYRJnXDMQ9yfjHIiL60.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/2HCLYRJnXDMQ9yfjHIiL60.
Electronic Music Anthology: the French Touch Session
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa725bcda4880b4425e6928ad23b97f37ac580e905ae8c21dcfd68795e2cf75ac. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5rAWTpJ4odpd6HEQx9w0Ie.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/5rAWTpJ4odpd6HEQx9w0Ie.