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 0xfeebc64a2dc86b3390e42aa3043d0f6a76fb5731b507d5a3d959787e27f2157b. 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/505d316d-dab0-4048-83b9-b154633bc6f0.json and https://artists.proofprofile.net/proofs/artist/505d316d-dab0-4048-83b9-b154633bc6f0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Remember It feat. HaLo & Median - Bonus Track
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 0x0feb2a140fc21fe11e531b4ebaf8bc69e5ccff181fe7abac24520bebc0d892de. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/47lhyDnWauSIxq56ZIfbQf.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/47lhyDnWauSIxq56ZIfbQf.
Lazy Sunday - Statik Selektah Remix Instrumental
{"copyright_id":"0xff66c64270ba6061cf062e406485cdc6c051ec20fe05adb5138bf5dde9b73daf","isrc":"US6680917736","name":"Lazy Sunday","registered_at":"2026-06-21T04:04:51Z","spotify_id":"45kPGqELOHKNFXWG3DsQFN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff66c64270ba6061cf062e406485cdc6c051ec20fe05adb5138bf5dde9b73daf. 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/45kPGqELOHKNFXWG3DsQFN.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/45kPGqELOHKNFXWG3DsQFN.
{"copyright_id":"0x55cb5dd40d2e038a4db85d8930eb685a7d92a5a8d543e9c4c45eaf1a28ead715","isrc":"US92U1910798","name":"Silly Rabbits","registered_at":"2026-06-18T19:22:48Z","spotify_id":"4I9ES3rht8Bsshd4ZfONug","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cb5dd40d2e038a4db85d8930eb685a7d92a5a8d543e9c4c45eaf1a28ead715. 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/4I9ES3rht8Bsshd4ZfONug.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/4I9ES3rht8Bsshd4ZfONug.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e13c4b0533e8eeb63780935a81fba5c0f89da9d475610987995f7925c6399d. 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/3MGpcatguVunZksWaEoZbI.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/3MGpcatguVunZksWaEoZbI.
{"copyright_id":"0x4c4966c22d6adb3e90a6445e909bbd2f122647eddbf5e462cbe75330da8458ff","isrc":"US92U1910802","name":"The Syndicate","registered_at":"2026-06-24T18:43:14Z","spotify_id":"7rwWPJ7fLpKpPY4KNYK6jK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4966c22d6adb3e90a6445e909bbd2f122647eddbf5e462cbe75330da8458ff. 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/7rwWPJ7fLpKpPY4KNYK6jK.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/7rwWPJ7fLpKpPY4KNYK6jK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f5434f578cebb4960cea2464c3fa00c41a575ac390184d9e3635f869db2cff. 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/1ddeLZNWzgKTrJlozsXZ4x.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/1ddeLZNWzgKTrJlozsXZ4x.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe071c65bb1c260c9d21cfb2c9b297b049862e52049a596192dda6b540a218363. 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/3wyyHg3MCBzFWn5bQemeia.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/3wyyHg3MCBzFWn5bQemeia.