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 0xdd364542a7812086863063c77574a3f9e794249b4df829b15007bf4e3803a37b. 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/3993669a-3bb4-4f5e-be42-1185d097d103.json and https://artists.proofprofile.net/proofs/artist/3993669a-3bb4-4f5e-be42-1185d097d103.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 0xf45503d9aa100efb1b5fd1ef9e190ded603ea2d763b091dac9274bb2cd5ef64e. 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/0OKAoMUvMoOKrEJVloyzwe.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/0OKAoMUvMoOKrEJVloyzwe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d64728598af1339a3d296668ff18937a37b12e719951e814dff62e1aade4ca6. 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/3Y0nNS17Q6QIrpCGC6UWck.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/3Y0nNS17Q6QIrpCGC6UWck.
{"copyright_id":"0xb95319044eb9fcb691b198e3021d9a77f4368caa0b1f0b2d107ff652c577763b","isrc":"GBKQU1828581","name":"Nutz - Audiophonic, Vertigo Remix","registered_at":"2026-06-28T21:47:47Z","spotify_id":"2649XgvoNudjrRumLmqAw0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95319044eb9fcb691b198e3021d9a77f4368caa0b1f0b2d107ff652c577763b. 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/2649XgvoNudjrRumLmqAw0.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/2649XgvoNudjrRumLmqAw0.
Polynomial (Yestermorrow & Synesthetic Remix)
Polynomial - Yestermorrow & Synesthetic Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1f3a097fd1036c213caf76ec46d4d844e7422ebf33e87c8497a742cbec9e9a. 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/4FppVokFkq5RIGWjfRQyqs.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/4FppVokFkq5RIGWjfRQyqs.
{"copyright_id":"0x9b30029007c2d4f1aabe50b982402fd8dde5d5fa6aa7dd3160413cf248b0c449","isrc":"DKZVA2300315","name":"Adagio - Original mix","registered_at":"2026-06-28T21:47:25Z","spotify_id":"4iMU0ZiDQZvWCk5x7t2xj0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b30029007c2d4f1aabe50b982402fd8dde5d5fa6aa7dd3160413cf248b0c449. 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/4iMU0ZiDQZvWCk5x7t2xj0.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/4iMU0ZiDQZvWCk5x7t2xj0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ccc83e1681508594b4d05d65413cf555c4c525254e9d0c85d9590f42d73b0d. 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/7DF2PnHqGquwfy4HfWxLmr.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/7DF2PnHqGquwfy4HfWxLmr.
{"copyright_id":"0x1bcd38cc98d1727a7ccc72a5f6244f56fc0f58c230816761b11a9ed330406fda","isrc":"DEN061801022","name":"Ecstasy - Morten Granau Remix","registered_at":"2026-06-10T02:22:23Z","spotify_id":"2dvI4rUS3cQdlNfM7AKz0J","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bcd38cc98d1727a7ccc72a5f6244f56fc0f58c230816761b11a9ed330406fda. 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/2dvI4rUS3cQdlNfM7AKz0J.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/2dvI4rUS3cQdlNfM7AKz0J.
{"copyright_id":"0x383faec8e64ecbe28ab1f2a1d34061da56482ec9363a51c494a4faf822b6b6b7","isrc":"DEKC41500024","name":"The Collective","registered_at":"2026-06-08T10:45:44Z","spotify_id":"3XRgAvxAdUIqNNzb6Xxj70","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383faec8e64ecbe28ab1f2a1d34061da56482ec9363a51c494a4faf822b6b6b7. 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/3XRgAvxAdUIqNNzb6Xxj70.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/3XRgAvxAdUIqNNzb6Xxj70.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45503d9aa100efb1b5fd1ef9e190ded603ea2d763b091dac9274bb2cd5ef64e. 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/3Pt8PIiW875n8f7H2OozfS.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/3Pt8PIiW875n8f7H2OozfS.
Danish Delights (Compiled by Alexander Descroix)
{"copyright_id":"0x822fa84c2f68e2b93fa48c60c6c6f6226cdabc9cbb3c4a97e88ae7c5d03c6429","isrc":"DKZVA1360274","name":"Tusindfryd - Original Mix","registered_at":"2026-06-09T15:51:59Z","spotify_id":"5EGqGlpY22NeG6OfK9b96v","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822fa84c2f68e2b93fa48c60c6c6f6226cdabc9cbb3c4a97e88ae7c5d03c6429. 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/5EGqGlpY22NeG6OfK9b96v.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/5EGqGlpY22NeG6OfK9b96v.