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 0x86390695e1d47283bad6caaa6110ab20de1c97302e1bed9e102c6c1f1201fdb9. 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/1cd212a2-cd41-45e4-9d9f-4243598cb454.json and https://artists.proofprofile.net/proofs/artist/1cd212a2-cd41-45e4-9d9f-4243598cb454.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 0xf5374d2a2e521c310333504a0df1847819d928d95aaa9400564cfd24dfd05a31. 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/6ZFdTgVG0H4lzKUJ4I06Kt.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/6ZFdTgVG0H4lzKUJ4I06Kt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331a3389725da1e824e4ca6e41e63f543627f71e0755ad09dc4bccea491a5023. 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/5JkannnSjxrVgfMbPI7OH5.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/5JkannnSjxrVgfMbPI7OH5.
{"copyright_id":"0xdfcb634c9c556b8c607360dc28aee70215e0494b6225701eb4cf55977de2e2c1","isrc":"BCZVF2200004","name":"Ainda Espero","registered_at":"2026-06-08T13:22:08Z","spotify_id":"4VzhsS5xSzaReCsFTrQbPt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcb634c9c556b8c607360dc28aee70215e0494b6225701eb4cf55977de2e2c1. 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/4VzhsS5xSzaReCsFTrQbPt.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/4VzhsS5xSzaReCsFTrQbPt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2848c404e92a27b1275406c6736330c1042ca6858d186f34971f80e15b2e1889. 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/5KVpPcG2pfAD1AbpIXoFwP.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/5KVpPcG2pfAD1AbpIXoFwP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81acd03d062717add8f75524cfe2c2f271b6c6c2f2b4ab28f52aec8d2db6db3. 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/2J3KJURZgRiVc8IH9uuKgj.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/2J3KJURZgRiVc8IH9uuKgj.
{"copyright_id":"0xbbefdab6f8de1170640e2ca4e76add02757ad071227b38184afb5a418a0a5faf","isrc":"BCZVF2300005","name":"minha culpa.","registered_at":"2026-06-07T17:41:21Z","spotify_id":"0ePXZj08V56pi0kLf3FJsN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbefdab6f8de1170640e2ca4e76add02757ad071227b38184afb5a418a0a5faf. 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/0ePXZj08V56pi0kLf3FJsN.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/0ePXZj08V56pi0kLf3FJsN.
{"copyright_id":"0x31f3424c14d9dc48416bb229a3d0734281cbd6acfb67eea62c8016be38cc8928","isrc":"BCZVF2300001","name":"Tipo Acústico 01 - Partida","registered_at":"2026-06-18T20:47:12Z","spotify_id":"4nPiOvBP7kvNH04Yfz1wae","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f3424c14d9dc48416bb229a3d0734281cbd6acfb67eea62c8016be38cc8928. 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/4nPiOvBP7kvNH04Yfz1wae.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/4nPiOvBP7kvNH04Yfz1wae.
{"copyright_id":"0xf0e680a6290f143d819f647db4fc23afe8aafe36e6745d3ec6760f7c1dbc546e","isrc":"BCZVF2200006","name":"Depois da Meia Noite","registered_at":"2026-06-06T17:56:35Z","spotify_id":"5LKzBcte10GcGzQc2E6lO9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e680a6290f143d819f647db4fc23afe8aafe36e6745d3ec6760f7c1dbc546e. 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/5LKzBcte10GcGzQc2E6lO9.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/5LKzBcte10GcGzQc2E6lO9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0bdb7d0774c7c78275b91f56ebdc4db628479d3d9533114c85eeb0094ea125c. 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/1oKeFnoD4jIQ9EiUyW4msF.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/1oKeFnoD4jIQ9EiUyW4msF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcb634c9c556b8c607360dc28aee70215e0494b6225701eb4cf55977de2e2c1. 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/32C3iL2xglMsFx22OIzRVr.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/32C3iL2xglMsFx22OIzRVr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331a3389725da1e824e4ca6e41e63f543627f71e0755ad09dc4bccea491a5023. 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/1eXNUlrKi7oUSvnvA0de8f.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/1eXNUlrKi7oUSvnvA0de8f.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545df70034f68935df0caa972495934ba03f422d681b7456fe1d2f942e935786. 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/3mtppr0piw6YP4bS0EoDOb.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/3mtppr0piw6YP4bS0EoDOb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75251251a6010932dbb7428cedb0050e6f28a4445f78ff0d6c52b020b289683d. 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/0hpvHgM1sVpYOrOHpvdiZ4.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/0hpvHgM1sVpYOrOHpvdiZ4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ab55be604e9646c8f72915f617c13339b2e34edf8ede3b8259c73da028532f. 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/15QfQ1hrPI6st14lnYJ4B7.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/15QfQ1hrPI6st14lnYJ4B7.