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 0xb414f111d57e5db43d0508dafc4de77e159a8cbddd623bbf261a3605b9a86981. 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/1196154c-35a2-4f13-9d06-0c88db09502b.json and https://artists.proofprofile.net/proofs/artist/1196154c-35a2-4f13-9d06-0c88db09502b.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 0xf37efd8a27614adc7543b8023215a025174dd2cb1f1b95558e88ac6263039404. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6I6guQLGZO4ZqgQzVeHvhD.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/6I6guQLGZO4ZqgQzVeHvhD.
{"copyright_id":"0xf6b4f4d3b69eb7be4e5281f7f0af76cc2f4ade0018eae9abf5ce6be9b27920ae","isrc":"QZMEP2305109","name":"Under The Moon","registered_at":"2026-06-08T18:23:20Z","spotify_id":"6VjnvOh6fmEZtjm1dj36Et","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b4f4d3b69eb7be4e5281f7f0af76cc2f4ade0018eae9abf5ce6be9b27920ae. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6VjnvOh6fmEZtjm1dj36Et.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/6VjnvOh6fmEZtjm1dj36Et.
{"copyright_id":"0xf6b4f4d3b69eb7be4e5281f7f0af76cc2f4ade0018eae9abf5ce6be9b27920ae","isrc":"QZMEP2305109","name":"Under The Moon","registered_at":"2026-06-08T18:23:20Z","spotify_id":"1tlq1oUkmgeNhBJVnm8m8M","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b4f4d3b69eb7be4e5281f7f0af76cc2f4ade0018eae9abf5ce6be9b27920ae. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1tlq1oUkmgeNhBJVnm8m8M.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/1tlq1oUkmgeNhBJVnm8m8M.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444f73690524345198617709d88616f830acdfdfec168d0ca6dde866ae076690. 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/3tXKXfd7ThfZLD4I1qUS6x.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/3tXKXfd7ThfZLD4I1qUS6x.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37efd8a27614adc7543b8023215a025174dd2cb1f1b95558e88ac6263039404. 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/0yBgcamJXAPpcHgtB5581V.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/0yBgcamJXAPpcHgtB5581V.
{"copyright_id":"0x34065b5b66f55faebd8a37a3b429c36f7f71e3e98257470d5fac1e63815b977b","isrc":"QZHN42372446","name":"Moonlight Lullaby","registered_at":"2026-06-08T01:48:06Z","spotify_id":"5vcuHkVaFuHvBbzHw3SODh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34065b5b66f55faebd8a37a3b429c36f7f71e3e98257470d5fac1e63815b977b. 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/5vcuHkVaFuHvBbzHw3SODh.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/5vcuHkVaFuHvBbzHw3SODh.
{"copyright_id":"0xf6b4f4d3b69eb7be4e5281f7f0af76cc2f4ade0018eae9abf5ce6be9b27920ae","isrc":"QZMEP2305109","name":"Under The Moon","registered_at":"2026-06-08T18:23:20Z","spotify_id":"5o3FuyzMOL37vQZ88Wv0lA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b4f4d3b69eb7be4e5281f7f0af76cc2f4ade0018eae9abf5ce6be9b27920ae. 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/5o3FuyzMOL37vQZ88Wv0lA.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/5o3FuyzMOL37vQZ88Wv0lA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34065b5b66f55faebd8a37a3b429c36f7f71e3e98257470d5fac1e63815b977b. 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/1929R43dpOReYVmSMXBqun.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/1929R43dpOReYVmSMXBqun.