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 0xc052dbdf048421b32ecb25572db388bff88384c3c7c41ac8445797642213070b. 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/14bdef86-68b1-44f4-959a-2a2edf829505.json and https://artists.proofprofile.net/proofs/artist/14bdef86-68b1-44f4-959a-2a2edf829505.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 0xe019276b4bcdc143bde355e34198bcd023baefb84de0a8b42f2962f1186a9eef. 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/60BAHD2wgUvk1xcGFt5bnT.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/60BAHD2wgUvk1xcGFt5bnT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872e0200bc1379b0dbbd9586b914bcf34b4d6449f102b48845b4f87c3f53f9a6. 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/6roUxig4QRaUCCrpfWgwmt.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/6roUxig4QRaUCCrpfWgwmt.
{"copyright_id":"0xc2f7a9afd49e01cf2abf85e70c6c37f5e72768942e4b87d1e29d508a46a85640","isrc":"QZNJV2338166","name":"La Tendencia","registered_at":"2026-06-08T07:45:12Z","spotify_id":"5JqQpGh5vtq9xlCzKH3SNl","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f7a9afd49e01cf2abf85e70c6c37f5e72768942e4b87d1e29d508a46a85640. 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/5JqQpGh5vtq9xlCzKH3SNl.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/5JqQpGh5vtq9xlCzKH3SNl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae56ac7fe8c47802f7ba8c8ee280fbd88a3a66ae192184787e5e192f1f6775d1. 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/07eikczZrRVqUOwSd3gTUh.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/07eikczZrRVqUOwSd3gTUh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc60d4773394ac6c718b9a12447f12fef05dc6477c6e41c17c51c8e0e69d9f1a. 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/3ov1R2coUSRXzAmKXmk6nt.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/3ov1R2coUSRXzAmKXmk6nt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729e377b8a639621da95142f8e428373eeab37460f03a681ee26a4a34be00e39. 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/1C7dlhgx28pHMjCMfiiZun.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/1C7dlhgx28pHMjCMfiiZun.
{"copyright_id":"0x6d0618a4cd84e4ec2e4262aeeda62e46b118c9f9ff6acfe0ee4bbc4f94609b9c","isrc":"MXB952200041","name":"Pa PRIVE","registered_at":"2026-06-05T19:01:46Z","spotify_id":"59EISn3QlxiItQFAlk4WVy","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0618a4cd84e4ec2e4262aeeda62e46b118c9f9ff6acfe0ee4bbc4f94609b9c. 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/59EISn3QlxiItQFAlk4WVy.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/59EISn3QlxiItQFAlk4WVy.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943826446e331b1bb61b0ccc3d06671f37f8270c2d87d3cae02b20fd6e6f77a7. 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/0cGjzfCsFZcOwzJmUZrZY3.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/0cGjzfCsFZcOwzJmUZrZY3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea76a7e328043bdeda5605be83e03a30d27976ed651da3bbaa8372606656213. 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/2CJqunjr1rf5egXXhN9eVB.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/2CJqunjr1rf5egXXhN9eVB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a469690afd9e7d3cb60e590d97a1e30658ba7392e3874dc0e6953c3d1a4df8. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:50:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/42TGS6JN4IbUj0hjo0i67q.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/42TGS6JN4IbUj0hjo0i67q.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872e0200bc1379b0dbbd9586b914bcf34b4d6449f102b48845b4f87c3f53f9a6. 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/1AtCMpYD4kPAPc5s5l1Vbt.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/1AtCMpYD4kPAPc5s5l1Vbt.