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 0x5915c58e08a7284b71e151ecc785253b17a77c5fc4bfdd0ced0acf71cd51799d. 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/23182e59-8962-4024-aa69-9ba44c3105b4.json and https://artists.proofprofile.net/proofs/artist/23182e59-8962-4024-aa69-9ba44c3105b4.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 0x3d345b5ae818e202413b395c15ba92ad5b05222d7f6d413f5da864a44991dc54. 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/6snyfkk7VvzcMMNmQ4b6Ku.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/6snyfkk7VvzcMMNmQ4b6Ku.
Can't Get My Head Around Loving You - Acoustic Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4c773e7c245a3699efa26186f2481bc0cf118cafdfc29a5ace4b297014c453. 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/06Ac0nZBICsOJhcxhpwM7T.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/06Ac0nZBICsOJhcxhpwM7T.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbf1ea7fd775ef6e2ce3c2083ce070a1c8cc482dd60439646a3fb1cb774b21c. 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/3jyWvK8tNDchRuVw44tcMa.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/3jyWvK8tNDchRuVw44tcMa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbf1ea7fd775ef6e2ce3c2083ce070a1c8cc482dd60439646a3fb1cb774b21c. 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/01b27bv6X2VFPjiFMgRQ5W.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/01b27bv6X2VFPjiFMgRQ5W.
De Beste Singer Songwriter Van Nederland 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbf1ea7fd775ef6e2ce3c2083ce070a1c8cc482dd60439646a3fb1cb774b21c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/35504mDJJo69QH5ZoH4g3k.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/35504mDJJo69QH5ZoH4g3k.
{"copyright_id":"0x48ef8ee2d2911291af359ad2b9ae4738326181b0d22941ca11f16dee33fcc393","isrc":"NLF711800743","name":"Crazy - Acoustic Version","registered_at":"2026-06-06T08:11:36Z","spotify_id":"5HhEkkAFcGMYLQbF6GUa6C","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ef8ee2d2911291af359ad2b9ae4738326181b0d22941ca11f16dee33fcc393. 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/5HhEkkAFcGMYLQbF6GUa6C.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/5HhEkkAFcGMYLQbF6GUa6C.