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 0x38a44676f28ae8acab8e2ed1451d35b93c6c434256f33fb982006a75b5f585db. 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/84b561c6-d2e7-497b-b614-1926bef3c021.json and https://artists.proofprofile.net/proofs/artist/84b561c6-d2e7-497b-b614-1926bef3c021.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 0x89c5c632720c2ed0459923efa8d95475d78e54c0d720f6c3cb91acc3be4a75f9. 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/0DgSlDcWG9jRlFZOqRyD0L.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/0DgSlDcWG9jRlFZOqRyD0L.
{"copyright_id":"0x193a2de48ba07435bf8b328eb619fac9e9bebc4b5ce581223cf7a3f080e6e4e3","isrc":"USWB12203798","name":"Q-Pid - Sped Up Version","registered_at":"2026-06-18T13:17:12Z","spotify_id":"2Kxl4T771DNEOinm15F5UU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193a2de48ba07435bf8b328eb619fac9e9bebc4b5ce581223cf7a3f080e6e4e3. 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/2Kxl4T771DNEOinm15F5UU.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/2Kxl4T771DNEOinm15F5UU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c5c632720c2ed0459923efa8d95475d78e54c0d720f6c3cb91acc3be4a75f9. 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/1KSdEBtZzZ40ZvhXPEP7dn.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/1KSdEBtZzZ40ZvhXPEP7dn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc328e5a5fda7139364f463e3a889cd2a6443e9b97730022b4979b5748c7591f3. 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/7qI4SIP68Rfo0uzZ3lwFCh.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/7qI4SIP68Rfo0uzZ3lwFCh.
C4 (feat. Skilla Baby & Rob49) [ALT Versions]
C4 (feat. Skilla Baby & Rob49) - Sped Up
C4 (feat. Skilla Baby & Rob49) - Instrumental
C4 (feat. Skilla Baby & Rob49) - Slowed Down
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4409a1d75c64d6154cee2bc41e76feb95d03bc85528612e5fe955bb7c74d1a7b. 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/5DBD1TTl06dvp3WqPEY5Pj.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/5DBD1TTl06dvp3WqPEY5Pj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad83ea4d9f57e4a6b21d3a22622432e68d35902d7b5f5c0146207d2fe86f2a0. 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/6fAEtkhiOga5LFAcTgziO5.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/6fAEtkhiOga5LFAcTgziO5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b38b83d43c71ba929a9feab7acae8eaf72162c45fc65f601729481a79c5960a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3mtd3ex4BGy3xN1L7UbLPg.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/3mtd3ex4BGy3xN1L7UbLPg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b38b83d43c71ba929a9feab7acae8eaf72162c45fc65f601729481a79c5960a. 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/17WaVH0F8S3O8twUpdL3lF.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/17WaVH0F8S3O8twUpdL3lF.
{"copyright_id":"0x39010f5d51fa7c8ea09075bdc184d1de46b6d68721e7556b6bcc80ea0822dbc9","isrc":"USWB12303432","name":"Love Me (feat. 2Rare)","registered_at":"2026-06-21T19:58:19Z","spotify_id":"4NyXnwsZemTfDq9JSWa4Qt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39010f5d51fa7c8ea09075bdc184d1de46b6d68721e7556b6bcc80ea0822dbc9. 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/4NyXnwsZemTfDq9JSWa4Qt.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/4NyXnwsZemTfDq9JSWa4Qt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102d6de3d129d70795fd729064e100c0b015e47c192457b71e3b89c9126134c8. 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/1dURjT7sp5kwhYv0TTQGEo.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/1dURjT7sp5kwhYv0TTQGEo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b38b83d43c71ba929a9feab7acae8eaf72162c45fc65f601729481a79c5960a. 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/5uzTQQDcW2BbTyPsOoZreP.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/5uzTQQDcW2BbTyPsOoZreP.
{"copyright_id":"0x4409a1d75c64d6154cee2bc41e76feb95d03bc85528612e5fe955bb7c74d1a7b","isrc":"USWB12205833","name":"DO IT AGAIN (feat. 2Rare)","registered_at":"2026-06-01T11:08:33Z","spotify_id":"1dIFyIcc946VlUAYrpKNcP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4409a1d75c64d6154cee2bc41e76feb95d03bc85528612e5fe955bb7c74d1a7b. 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/1dIFyIcc946VlUAYrpKNcP.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/1dIFyIcc946VlUAYrpKNcP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4409a1d75c64d6154cee2bc41e76feb95d03bc85528612e5fe955bb7c74d1a7b. 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/2Vl3ertXbFh1DZ2z58z85g.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/2Vl3ertXbFh1DZ2z58z85g.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4409a1d75c64d6154cee2bc41e76feb95d03bc85528612e5fe955bb7c74d1a7b. 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/3Bk3gr1Wu76t4hIsjchK7D.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/3Bk3gr1Wu76t4hIsjchK7D.