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 0x97e01375b44da2ca1149b9cf4bfcf0304a04091279d662ab8e8c481654ab38de. 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/81c25d15-041d-452e-a38a-97182c310cea.json and https://artists.proofprofile.net/proofs/artist/81c25d15-041d-452e-a38a-97182c310cea.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 0xfa702e510fe94854b314e92d8a6b5eb9f35fae3fd2ac66485eb6d996bfe81491. 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/0DtlN7l8nnzML3nvyKJdtQ.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/0DtlN7l8nnzML3nvyKJdtQ.
{"copyright_id":"0xecdda2c53d8dadd8e8c0c9f492cd233cb7fb085ec9c4478aed804b98c18013b9","isrc":"USA2P1290125","name":"Unconditional Love","registered_at":"2026-06-04T13:12:02Z","spotify_id":"5eReOqbysgLsqGp2ukMUYp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecdda2c53d8dadd8e8c0c9f492cd233cb7fb085ec9c4478aed804b98c18013b9. 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/5eReOqbysgLsqGp2ukMUYp.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/5eReOqbysgLsqGp2ukMUYp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1907005789216080fa232fe1c00cbf5054ef1cc4c169bda80c22bf651df1c598. 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/4smyzd6JsDctqs5Fy104LL.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/4smyzd6JsDctqs5Fy104LL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1907005789216080fa232fe1c00cbf5054ef1cc4c169bda80c22bf651df1c598. 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/5tmhlnAvZRKxw4AUsb0FvU.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/5tmhlnAvZRKxw4AUsb0FvU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83674539ebd52640ff6c30d9ce005efeb98996cf68976a8f704feb5adfc7913. 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/56NT62zyaY3xZ7a4JnUr78.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/56NT62zyaY3xZ7a4JnUr78.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebd6e6a54812fc4249f9722ef4115ef661703a3cfe46485ffc75435f64e236c. 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/6DfEAKDRzi6olQgZTnrcCb.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/6DfEAKDRzi6olQgZTnrcCb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aaf2ca1e6bce12c878fe45e1076ed6fdce524e55e2d2eda2b46954990a43aa7. 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/4FVHH9AKmdvxczTRrqgLaz.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/4FVHH9AKmdvxczTRrqgLaz.
{"copyright_id":"0xa890a04db8ca5dc8bf74d28d80c4d421dcd6bf6297ccd63084201b83c4958099","isrc":"USDLE0800031","name":"Two Way Street","registered_at":"2026-06-20T10:54:40Z","spotify_id":"1gIUpXg2dCzW5BkKlFFR3p","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa890a04db8ca5dc8bf74d28d80c4d421dcd6bf6297ccd63084201b83c4958099. 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/1gIUpXg2dCzW5BkKlFFR3p.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/1gIUpXg2dCzW5BkKlFFR3p.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda16eeb354426f9b85a692dd2e4965872887e82622faac32b441763c578be14. 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/7bHpeiCO1IO6hqEZU1UcL4.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/7bHpeiCO1IO6hqEZU1UcL4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4344af359560b6a58cbd71b68b6a845de098f8504686916b354f319605bc380. 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/0lrY5x74InbSUqH93mI1K3.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/0lrY5x74InbSUqH93mI1K3.
{"copyright_id":"0x26711246394162f9e11f6fedff44e01eaeca8db9bb5830613129d442225416e2","isrc":"GBBZV0551837","name":"Nuh Build Great Man (feat. Jah Cure)","registered_at":"2026-06-06T17:13:16Z","spotify_id":"7tjr6Jp4sArYBM2FDHmgKa","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26711246394162f9e11f6fedff44e01eaeca8db9bb5830613129d442225416e2. 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/7tjr6Jp4sArYBM2FDHmgKa.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/7tjr6Jp4sArYBM2FDHmgKa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c27ae9dceec76610a85c8853e453180e87f81b2ac0d177e53e4ab399516443. 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/4r9jIDIFovsjTeejYGJizP.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/4r9jIDIFovsjTeejYGJizP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf646499d6e4820083180c15c2b5a75683976f8dc2d56a19c71b8d097b088599e. 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/6X0SzWevGeaeftnlyqnyeC.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/6X0SzWevGeaeftnlyqnyeC.
{"copyright_id":"0x1d95d5e38d6a93154fdb8e4beccbf3f03472c0f4eb88ee22f635b33b02c1f77c","isrc":"JMB111400262","name":"World Is In Trouble","registered_at":"2026-06-23T13:41:25Z","spotify_id":"5ysdOxiNuE4EjN6FEemwVu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d95d5e38d6a93154fdb8e4beccbf3f03472c0f4eb88ee22f635b33b02c1f77c. 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/5ysdOxiNuE4EjN6FEemwVu.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/5ysdOxiNuE4EjN6FEemwVu.