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 0xae39f373391fdeede4ae05cf87a818d50b91285f55eaa82153a4ab1b7c3dfa40. 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/6bfad174-b570-4114-b2aa-9e9d7bfca19f.json and https://artists.proofprofile.net/proofs/artist/6bfad174-b570-4114-b2aa-9e9d7bfca19f.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 0x707d7f183e006f1a470048cb7f96a7670a60a32c51be4b912f0bee9c5ff1724d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/42CSSM9hLAgsGOcFK4jLcf.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/42CSSM9hLAgsGOcFK4jLcf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe694e4cab40e205a9b4adc32cc4e4449f9b9e521ba07f93e53261dcf8125cff3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1r5vemPNuFezbu5KXr7Mhc.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/1r5vemPNuFezbu5KXr7Mhc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9a2281e270c9c06a1bcb419a9cec4206e5faf051564d44f802456242537495. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/68tlyTGg5CDV0kWljSbiFl.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/68tlyTGg5CDV0kWljSbiFl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c8ad3708f8855cdb2a4efef34139b7139b7d583e09388633e28239ebb5a6ee. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4UeFloXatAH3FgTVcKdEvS.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/4UeFloXatAH3FgTVcKdEvS.
{"copyright_id":"0xf29f8e0e4a7855eb0bd279bcc9a79a4dd8576b586739de22d96cdb1a567ebe4b","isrc":"DGA062011025","name":"На Шаныраке","registered_at":"2026-06-10T02:02:59Z","spotify_id":"04IzRXxOXsolUiDKbHq1WB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29f8e0e4a7855eb0bd279bcc9a79a4dd8576b586739de22d96cdb1a567ebe4b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/04IzRXxOXsolUiDKbHq1WB.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/04IzRXxOXsolUiDKbHq1WB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0e3c23756d0130852dcba45f77b764e4d264e67d1a1ecfdc08d88fc7af3dcc. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0sS43bWPYLquAzbRFBHWiX.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/0sS43bWPYLquAzbRFBHWiX.
{"copyright_id":"0xbe2dff2abf0ea74f000986698ebfd3a795fadeffa9de7cdc67e6df0b572af724","isrc":"DGA062011031","name":"Полный контакт","registered_at":"2026-06-21T20:23:22Z","spotify_id":"5XmD3vJNDPT24YjNd2xAqY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2dff2abf0ea74f000986698ebfd3a795fadeffa9de7cdc67e6df0b572af724. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5XmD3vJNDPT24YjNd2xAqY.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/5XmD3vJNDPT24YjNd2xAqY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e0e1add4406142aca20f9054d3b227db916762377eb894362a757dfb6da6de. 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/5LcFnvoINIqcE4Z7Q9GFeU.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/5LcFnvoINIqcE4Z7Q9GFeU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707d7f183e006f1a470048cb7f96a7670a60a32c51be4b912f0bee9c5ff1724d. 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/6aytKTXzEBOEgx5ws19Ilb.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/6aytKTXzEBOEgx5ws19Ilb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe694e4cab40e205a9b4adc32cc4e4449f9b9e521ba07f93e53261dcf8125cff3. 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/7IYu8hMiaIZG9OXkhMsWxw.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/7IYu8hMiaIZG9OXkhMsWxw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9a2281e270c9c06a1bcb419a9cec4206e5faf051564d44f802456242537495. 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/2FUtKVhq3mtVyXWEi1KrEu.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/2FUtKVhq3mtVyXWEi1KrEu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c8ad3708f8855cdb2a4efef34139b7139b7d583e09388633e28239ebb5a6ee. 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/7MtVzVCQxsud9RA9Q6rVmj.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/7MtVzVCQxsud9RA9Q6rVmj.
{"copyright_id":"0xf29f8e0e4a7855eb0bd279bcc9a79a4dd8576b586739de22d96cdb1a567ebe4b","isrc":"DGA062011025","name":"На Шаныраке","registered_at":"2026-06-10T02:02:59Z","spotify_id":"7CoGPwxWfYlhNAsWmJbrUF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29f8e0e4a7855eb0bd279bcc9a79a4dd8576b586739de22d96cdb1a567ebe4b. 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/7CoGPwxWfYlhNAsWmJbrUF.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/7CoGPwxWfYlhNAsWmJbrUF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00604ded37056c6a42601d81dd0f3783de9295bd9f18d4d755d5311494e24a7. 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/0snUDfCy6O6KjXqgelzaH6.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/0snUDfCy6O6KjXqgelzaH6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274e3249f19475c6d86d28ec1ccfeed83cd13646151dcc15a9319360322a1a0f. 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/3jTcK8x3MK4TmQdmAJOSj6.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/3jTcK8x3MK4TmQdmAJOSj6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0e3c23756d0130852dcba45f77b764e4d264e67d1a1ecfdc08d88fc7af3dcc. 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/4ACAlNFWc8UzkqJXK8rLa8.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/4ACAlNFWc8UzkqJXK8rLa8.
{"copyright_id":"0xfaea40dbc1e19a6c3694caadef08d022817f19106d1da520287faaf266b30948","isrc":"DGA062011029","name":"Весь в отца","registered_at":"2026-06-04T16:29:13Z","spotify_id":"5EszNbXUwR7ZmdKjNgYvij","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaea40dbc1e19a6c3694caadef08d022817f19106d1da520287faaf266b30948. 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/5EszNbXUwR7ZmdKjNgYvij.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/5EszNbXUwR7ZmdKjNgYvij.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55c11168dd2fcecce48f7a59a3577263f85ab52c8361ffd30fda570031002ff. 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/5K2FXe9YGKyHPnZ5uZpvKL.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/5K2FXe9YGKyHPnZ5uZpvKL.
{"copyright_id":"0xbe2dff2abf0ea74f000986698ebfd3a795fadeffa9de7cdc67e6df0b572af724","isrc":"DGA062011031","name":"Полный контакт","registered_at":"2026-06-21T20:23:22Z","spotify_id":"3GgAmWuDSW6VjlVDbCcdc4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2dff2abf0ea74f000986698ebfd3a795fadeffa9de7cdc67e6df0b572af724. 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/3GgAmWuDSW6VjlVDbCcdc4.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/3GgAmWuDSW6VjlVDbCcdc4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2702fe73702eeb03b9350229ac3f6ca7c705feef7f749049f0135d5d7c10dc3f. 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/6lLhHd06HXgk33wc2mCYNN.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/6lLhHd06HXgk33wc2mCYNN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ef26a801b9a5cd21ae3dff4e095f9e75b0b5c472123ae5c085cd0b62b1f9e5. 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/5mfeBz5o6UscyGHsWds4BJ.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/5mfeBz5o6UscyGHsWds4BJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b00c69a78ff6e63123d062cd5c75120521471eade045293d9e10fac9473f0a7. 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/3M5Ynn33wPnPfXLVQEaxlO.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/3M5Ynn33wPnPfXLVQEaxlO.