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 0x0b2f511c912de0544b1bfc707067a72e007a509d6a56110031473e0067b95783. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6546e9cf-e5d4-486a-ba85-61f3d329bf8e.json and https://artists.proofprofile.net/proofs/artist/6546e9cf-e5d4-486a-ba85-61f3d329bf8e.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 0xf45ab79e01f3ab27882ea57c11e8faed4dcc7b9d9303a9aa7ee42642ecee49dc. 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/3TwAy5Wd1hn89J43NnJNpR.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/3TwAy5Wd1hn89J43NnJNpR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69bb7b300d97771374fb2ccdfa86ccab0c4e37d15bc5f31095597929f4216c7c. 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/1wHDTJulNyumFWqSBVFXvl.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/1wHDTJulNyumFWqSBVFXvl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881f48d50a02b52918484d08091367f4fad9c9b6dd640cd65668a29c0e90d227. 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/600rE1aQNHwTMS49ji2JuX.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/600rE1aQNHwTMS49ji2JuX.
{"copyright_id":"0x4fdfadf3b3908957ba1fef52b5a8a8e18149b7e7c12d0343614ce20bc19b3033","isrc":"GBSMU9343916","name":"Can U Feel It","registered_at":"2026-06-11T23:38:14Z","spotify_id":"6N2q2TldgmRJZgVTbokvVw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdfadf3b3908957ba1fef52b5a8a8e18149b7e7c12d0343614ce20bc19b3033. 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/6N2q2TldgmRJZgVTbokvVw.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/6N2q2TldgmRJZgVTbokvVw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7550739a3fbdda8e681746662d6787cbabf378e136367b6bcc2c4ac8b42a54d. 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/1gSwjthRqzqpkGX69zW9m1.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/1gSwjthRqzqpkGX69zW9m1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8750110156ca6b0791efdf535d982be4012d21e24f335ad6f30976fb93f71a34. 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/675ENLQoyLkIzEGHm5FAqe.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/675ENLQoyLkIzEGHm5FAqe.
{"copyright_id":"0x5f13484cef1a0c8200f69a734d1d3feab4fed95141d0eae69a339aa75cef25a2","isrc":"DES232200321","name":"Harder We Fall - Extended","registered_at":"2026-06-06T08:00:05Z","spotify_id":"3QgxGezjJE8xnxeJmHV28E","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f13484cef1a0c8200f69a734d1d3feab4fed95141d0eae69a339aa75cef25a2. 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/3QgxGezjJE8xnxeJmHV28E.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/3QgxGezjJE8xnxeJmHV28E.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b9367e267de17f63840328d6f0f465152845ae692e320c7538d560fb7f38d1. 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/1OoBTb7NsSMSTIlUrNIVvy.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/1OoBTb7NsSMSTIlUrNIVvy.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1ff2ab1ccd3893f3f717adac4b0f87ee4323cc85eaa215fd04ba6d5b4050bd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1y5hoQUf9ufnG8RMu8z4Vs.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/1y5hoQUf9ufnG8RMu8z4Vs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70825600b6fd9c44111d11a2a42c92c7974f2bee1f9c4137b6a45110ca7b746b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0IDOFhDbdHibzbL1xlb450.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/0IDOFhDbdHibzbL1xlb450.
{"copyright_id":"0x969c8577b7dba2e96479755d3051b065ba72d852e49999cbe9e055f09fad6f6a","isrc":"US23A1556757","name":"More Than I Should Know","registered_at":"2026-06-11T01:25:06Z","spotify_id":"4GPCNMEk8mhRKdpAnVIIc8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969c8577b7dba2e96479755d3051b065ba72d852e49999cbe9e055f09fad6f6a. 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/4GPCNMEk8mhRKdpAnVIIc8.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/4GPCNMEk8mhRKdpAnVIIc8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8e673845221031b60b6c3db07d59afc0253e485b52bd6fa2a77ae9098b9929. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2YIiwOITR1rDCwnwPS4KUw.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/2YIiwOITR1rDCwnwPS4KUw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf706d1f450cefef5dfc522dd84f26f0ccc15b2ccb09cc80e2f35bd9edd5dec. 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/6PbRUFCXeFy800eEkDkw40.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/6PbRUFCXeFy800eEkDkw40.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3576ab29b2141cda58b4ec320b8ecabb018fc89b19636d91aa02f4fdaf018f4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6ELMZ0F8pm6WKndlsfvTzP.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/6ELMZ0F8pm6WKndlsfvTzP.
{"copyright_id":"0x4c14245a644c0172ba42f92605fd57cf2eaf7a816dc10a076053f21a093e57c3","isrc":"US23A1556763","name":"Meet You There - Extended Mix","registered_at":"2026-06-21T19:23:02Z","spotify_id":"4sMquZnEtaCSCahMpojgN6","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c14245a644c0172ba42f92605fd57cf2eaf7a816dc10a076053f21a093e57c3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4sMquZnEtaCSCahMpojgN6.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/4sMquZnEtaCSCahMpojgN6.