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 0x87b299ecec14f44b77dfc87a378e1fbadd368899f8f7ebf29dda4e75dd06ee0f. 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/6c70d49f-6e62-44c3-bb8c-ef213613a60e.json and https://artists.proofprofile.net/proofs/artist/6c70d49f-6e62-44c3-bb8c-ef213613a60e.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 0xa6238969b1c53c4ebcbabe58396e7c589320150c1416685a06670abbe629a9e0. 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/51AXsgpHP8R1QWzFZRWZJk.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/51AXsgpHP8R1QWzFZRWZJk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5af2ec874bb366fd96f21729729bfc24e37e02ccf459d0498632138e203da7. 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/1HW8xwfFkFKjcwiyFFesJ6.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/1HW8xwfFkFKjcwiyFFesJ6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a5914c1e4fb4531b34c7a31cf847afe1ba8efed2d762e2067ac96505f96e24. 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/4hBrHn2BvCFSX1gc0FGi1u.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/4hBrHn2BvCFSX1gc0FGi1u.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020cbb24e4d36ef8562adaae3f173c92905fd6b7d1fadd6f90ffc364d4e45ea7. 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/5YhumnDuC5Lzb9n6c9jB1m.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/5YhumnDuC5Lzb9n6c9jB1m.
{"copyright_id":"0x8152f28e0b8b5760e1e64599668676afe966ed92b4c7ef7f07e7d7a4daeddf2b","isrc":"NZBO00800010","name":"I Dont Usually","registered_at":"2026-06-24T18:22:45Z","spotify_id":"75EH9p8ZUWKEgVdEWlEyBj","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8152f28e0b8b5760e1e64599668676afe966ed92b4c7ef7f07e7d7a4daeddf2b. 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/75EH9p8ZUWKEgVdEWlEyBj.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/75EH9p8ZUWKEgVdEWlEyBj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c6b272bded05c82cf7c0b58185eec3811ee9cb79c53332a7cf499b6cead1c7. 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/4InXrzo5DWkjIAnRBxHt9I.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/4InXrzo5DWkjIAnRBxHt9I.
{"copyright_id":"0x8c4ff172ac5c63d8781a49a4b370be7c46d8dac28058e9cfa56d4cae678b88fa","isrc":"NZBO00800012","name":"Mr Mista","registered_at":"2026-06-04T10:29:04Z","spotify_id":"3Lw3CevoovMWjPXX6KHSH8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4ff172ac5c63d8781a49a4b370be7c46d8dac28058e9cfa56d4cae678b88fa. 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/3Lw3CevoovMWjPXX6KHSH8.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/3Lw3CevoovMWjPXX6KHSH8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35db822ccfb76ba235b79dd77952db49d413fe4b186900bc911ad71d51cad9c0. 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/5X9PEJpCOCy7MccX8eOMuM.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/5X9PEJpCOCy7MccX8eOMuM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73c9bda2f0f05660cd09f1555859df17bdec05e738e0554e2c1a09ce2d8484c. 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/4nhpGVSIOuu7yPqlLGk57p.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/4nhpGVSIOuu7yPqlLGk57p.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0d3da40fddb92c8a7981364247394d9c74ba277f0c4090d999952a5c1d4595. 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/3eDl2ihoEvmDFfJb9AJJ9t.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/3eDl2ihoEvmDFfJb9AJJ9t.
Don't Cry - Stella.J.C a.k.a. Mono Creation remix