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 0x2e9a77f882f4f1bd93f2eb6a896539868d6b77ef0a065e554f247b354de5d9fb. 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/bc18c4f3-9093-423c-bb09-29e014f5a8a7.json and https://artists.proofprofile.net/proofs/artist/bc18c4f3-9093-423c-bb09-29e014f5a8a7.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 0x2331d890698b7db0d8e89c312387ecb25a4935b75e9dd8faa3c9c4afb5c7d26b. 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/4hJ8lSzrjYC4XkLpQVBsG8.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/4hJ8lSzrjYC4XkLpQVBsG8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00de79c0258811635250162d34ec205f273d4709d7b7bad317a72fba9ad22a44. 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/2YkKGgMJAZaPUmgWQHe8eP.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/2YkKGgMJAZaPUmgWQHe8eP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443a0d11cf7c8a1422099d20e32d984519edee3b0c484629aec14409957b4645. 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/3ptXtzgUNuzet3uPMRZ0Ii.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/3ptXtzgUNuzet3uPMRZ0Ii.
{"copyright_id":"0x74208ee46a5aefdeb4225d3cb9d31afb9241d166153c2a27622925383fc63fe8","isrc":"BCZY52300147","name":"Vários Esquemas","registered_at":"2026-06-23T06:53:00Z","spotify_id":"5wkuobl4KdiRtyimd4nJYR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74208ee46a5aefdeb4225d3cb9d31afb9241d166153c2a27622925383fc63fe8. 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/5wkuobl4KdiRtyimd4nJYR.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/5wkuobl4KdiRtyimd4nJYR.
{"copyright_id":"0x24c1543c45195eaccfa2aba148982083984af5d087d969132f61411c1c5fb75a","isrc":"BCZY52300126","name":"Vou Virar no Plantão","registered_at":"2026-06-24T13:33:42Z","spotify_id":"2XyhAEupNRmzdI4UfIfcwm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c1543c45195eaccfa2aba148982083984af5d087d969132f61411c1c5fb75a. 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/2XyhAEupNRmzdI4UfIfcwm.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/2XyhAEupNRmzdI4UfIfcwm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27efded9e3fe550704a7b09aff538dc017f4d5da8ea35a357bf3b895911a903e. 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/71iqpi1WAksh5tOUwJaMTV.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/71iqpi1WAksh5tOUwJaMTV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a14b5df246e4c1ee8a385c184c619f8bc24fe67b211226f49589583e00c048e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4OPGpZ0Gvn2RDrzsAgM3SE.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/4OPGpZ0Gvn2RDrzsAgM3SE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3450929093df197bad8e824d3b1140c802c911c43a9612a45a6d40c4648139de. 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/1XDICUNJtrclEKq4bKIGJZ.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/1XDICUNJtrclEKq4bKIGJZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7a28925dca8e67bec01259b1f1d4974b3631ee9c498ea8548dcc5de86780ab. 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/54f2Jsb8z95T3ZcVFutcLo.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/54f2Jsb8z95T3ZcVFutcLo.
{"copyright_id":"0xe3a57b90f559787380bbb9335119a0b449af7f2c6ea5a3333df6e9654b4feb35","isrc":"BCZY52500026","name":"Marca Registrada","registered_at":"2026-06-21T17:43:35Z","spotify_id":"1PQMYrYxaKJHrjVQoMs8c7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a57b90f559787380bbb9335119a0b449af7f2c6ea5a3333df6e9654b4feb35. 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/1PQMYrYxaKJHrjVQoMs8c7.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/1PQMYrYxaKJHrjVQoMs8c7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda81a6fb71e240c5449a3740aeb2afa971519c731931c201cf9c36a97a2cdfe5. 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/0s4wvmbBulFKesOcKS2F5Z.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/0s4wvmbBulFKesOcKS2F5Z.
{"copyright_id":"0xd878786aeefed45bf58d1a64fb9b2305ec7a31c0785d74446ed1522d8a4edacf","isrc":"BCZY52500007","name":"Bandido Só da um Tempo","registered_at":"2026-06-18T16:20:58Z","spotify_id":"5aNtkuYlLxGzVqEdLekRDK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd878786aeefed45bf58d1a64fb9b2305ec7a31c0785d74446ed1522d8a4edacf. 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/5aNtkuYlLxGzVqEdLekRDK.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/5aNtkuYlLxGzVqEdLekRDK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082d3260eac9bea2eab2a65e1ad5865acdd477931268fc548f77fe6283c01965. 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/65g0UIHI3urKOb6yPGDDhI.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/65g0UIHI3urKOb6yPGDDhI.
{"copyright_id":"0x767f22b910e92ce6bad34a492f941b2195eff2f7746896ceb8975ef03bc8bbc9","isrc":"QZFYZ2576952","name":"Penélope Charmosa (Versão Dj Chaves)","registered_at":"2026-06-20T19:31:52Z","spotify_id":"4Tq33Blkh4kqom4R1n3qP7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767f22b910e92ce6bad34a492f941b2195eff2f7746896ceb8975ef03bc8bbc9. 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/4Tq33Blkh4kqom4R1n3qP7.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/4Tq33Blkh4kqom4R1n3qP7.
MTG - RESENHA DO ARROCHA ,CALMA VIDA TÁ DE BOA
{"copyright_id":"0xca5b7485eb0397e80cf3c8ae8acd5e4b682c8cd4d00965fbcb62c4e852997189","isrc":"QZZ7W2407764","name":"MTG - RESENHA DO ARROCHA ,CALMA VIDA TÁ DE BOA","registered_at":"2026-06-06T04:36:24Z","spotify_id":"6RPfDhQp9fnI8wjythCwDF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5b7485eb0397e80cf3c8ae8acd5e4b682c8cd4d00965fbcb62c4e852997189. 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/6RPfDhQp9fnI8wjythCwDF.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/6RPfDhQp9fnI8wjythCwDF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29450ce3646c2d0271190b822b96aa0a270982c1eb3b5a6f265c9b6639b5473. 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/6PEdNV62MpsL7NFi6CQwXX.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/6PEdNV62MpsL7NFi6CQwXX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c275368aaaf52a910e82b45a48719c4a99d34be1bb994fdf68e793236c2361. 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/2NM0Q9TRzPKm92RGiw6zEW.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/2NM0Q9TRzPKm92RGiw6zEW.
{"copyright_id":"0x165334e926d2e21c58dae3b1e2b5f4be0b534d3df705ddc82d9b59cf2ee68d61","isrc":"QZZ792405929","name":"MTG - ÚLTIMA NOITE","registered_at":"2026-06-25T21:19:58Z","spotify_id":"0PkfGzwJibUm2ZSbLswvUd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165334e926d2e21c58dae3b1e2b5f4be0b534d3df705ddc82d9b59cf2ee68d61. 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/0PkfGzwJibUm2ZSbLswvUd.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/0PkfGzwJibUm2ZSbLswvUd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad058b5f7e9d60d27e4f29e975542dc8872f9239da22513b496bfb8a797a7235. 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/3m3jdbFFLAzfKMQNcMuEVX.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/3m3jdbFFLAzfKMQNcMuEVX.