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 0xa2f5b23c1e57311805117e0464e2ad0074808e16edd02370c443f5077f22462f. 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/ff482228-22a2-4b6f-a030-d9a1747e5713.json and https://artists.proofprofile.net/proofs/artist/ff482228-22a2-4b6f-a030-d9a1747e5713.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xffbaba9108086dd7a88a667d8939a52fcd2df50456ae64094feb8f214bde7ace","isrc":"GBCEL2200028","name":"Too Late Now - Soulwax Remix","registered_at":"2026-06-09T13:54:43Z","spotify_id":"5NY8FqMU71tJbuz6qiZ69C","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 0xffbaba9108086dd7a88a667d8939a52fcd2df50456ae64094feb8f214bde7ace. 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/5NY8FqMU71tJbuz6qiZ69C.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/5NY8FqMU71tJbuz6qiZ69C.
{"copyright_id":"0xffbaba9108086dd7a88a667d8939a52fcd2df50456ae64094feb8f214bde7ace","isrc":"GBCEL2200028","name":"Too Late Now - Soulwax Remix","registered_at":"2026-06-09T13:54:43Z","spotify_id":"4RzRXCxmChDMDnRqDT5vht","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbaba9108086dd7a88a667d8939a52fcd2df50456ae64094feb8f214bde7ace. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-03T01:37:49Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4RzRXCxmChDMDnRqDT5vht.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/4RzRXCxmChDMDnRqDT5vht.
Chaise Longue (Unknown Mortal Orchestra remix)
Chaise Longue - Unknown Mortal Orchestra remix
{"copyright_id":"0x61d61a9c01138b73c9bc7394b63bce7df9d4b6f5ba1b77e0688c51bfed5046ed","isrc":"USQX92303881","name":"Wagging Tongue - Wet Leg Remix","registered_at":"2026-06-27T02:00:39Z","spotify_id":"1BjwGHsnxM31vC7if8W1I9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d61a9c01138b73c9bc7394b63bce7df9d4b6f5ba1b77e0688c51bfed5046ed. 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/1BjwGHsnxM31vC7if8W1I9.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/1BjwGHsnxM31vC7if8W1I9.
{"copyright_id":"0xa7324c07fafd28545db02a82abd5dc7e265ecfce86bb2150daaabb625372b0e1","isrc":"USAT22310030","name":"C’est Comme Ça (Re: Wet Leg)","registered_at":"2026-06-04T13:14:26Z","spotify_id":"5PA2Q9hBo1gmB3RlA8TZa2","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7324c07fafd28545db02a82abd5dc7e265ecfce86bb2150daaabb625372b0e1. 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/5PA2Q9hBo1gmB3RlA8TZa2.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/5PA2Q9hBo1gmB3RlA8TZa2.
{"copyright_id":"0xa7324c07fafd28545db02a82abd5dc7e265ecfce86bb2150daaabb625372b0e1","isrc":"USAT22310030","name":"C’est Comme Ça (Re: Wet Leg)","registered_at":"2026-06-04T13:14:26Z","spotify_id":"39royDui3ObroFLIIi7Hrb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7324c07fafd28545db02a82abd5dc7e265ecfce86bb2150daaabb625372b0e1. 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/39royDui3ObroFLIIi7Hrb.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/39royDui3ObroFLIIi7Hrb.
{"copyright_id":"0xa7324c07fafd28545db02a82abd5dc7e265ecfce86bb2150daaabb625372b0e1","isrc":"USAT22310030","name":"C’est comme ça","registered_at":"2026-06-04T13:14:26Z","spotify_id":"7A9ObBjOqvR0HbgxGZg7uV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7324c07fafd28545db02a82abd5dc7e265ecfce86bb2150daaabb625372b0e1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7A9ObBjOqvR0HbgxGZg7uV.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/7A9ObBjOqvR0HbgxGZg7uV.
{"copyright_id":"0xa7324c07fafd28545db02a82abd5dc7e265ecfce86bb2150daaabb625372b0e1","isrc":"USAT22310030","name":"C’est comme ça","registered_at":"2026-06-04T13:14:26Z","spotify_id":"2FpYk1wKs7AlZS3vjD760f","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7324c07fafd28545db02a82abd5dc7e265ecfce86bb2150daaabb625372b0e1. 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/2FpYk1wKs7AlZS3vjD760f.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/2FpYk1wKs7AlZS3vjD760f.