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 0x354ea6895363f8eecc20c82d0c9066cef5de61c84c5b734ed583f8939cc21b69. 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/fd26100c-6842-49bf-8465-ee707129d80e.json and https://artists.proofprofile.net/proofs/artist/fd26100c-6842-49bf-8465-ee707129d80e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kung Makakapili Lang (from "Dirty Linen")
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 0x4db4db33bb79dfd22ffbc45d686808f11417a0846d311bc8d3cd7fa5abc4155c. 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/5b2NEigSN6FTlctai9x7JI.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/5b2NEigSN6FTlctai9x7JI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ecbf071894067ce03a2bf8f3b74b14c54d88126fc74b4c72041f8adf1b08cb8. 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/11qyrQHd5UIAQ69SpnyJQF.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/11qyrQHd5UIAQ69SpnyJQF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b57fd7d4c57630240891c190bfc5fb9f80a0246c0c1f93a6849c62ef56b7e0. 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/1A3AzOfYdnPThsE13DXQBb.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/1A3AzOfYdnPThsE13DXQBb.
{"copyright_id":"0xdc6d5eb05abe97a84b4067190bfde24bb8ee8aefc844401b2770bbac70dfb53a","isrc":"PHS032302340","name":"Himig ni Isa","registered_at":"2026-06-11T00:27:21Z","spotify_id":"2yZ8NYIlVEb7ix49Z8fMLX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6d5eb05abe97a84b4067190bfde24bb8ee8aefc844401b2770bbac70dfb53a. 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/2yZ8NYIlVEb7ix49Z8fMLX.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/2yZ8NYIlVEb7ix49Z8fMLX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17810157c366d69ef0724d0eb6ff86ab26ac6d4f5495ed914b2643e135ceec3f. 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/3BUTP2KZt7RbLrWpH4XayP.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/3BUTP2KZt7RbLrWpH4XayP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd371c164efdb08e7c15e883169cb7949263ad297053d3856e39bfcc81ce499. 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/4PxTFhI3b0FXSnRJeo3B9m.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/4PxTFhI3b0FXSnRJeo3B9m.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ea8069847adb66b018aebe195265d940d91a4bcb4773f05cf047ea466fef83. 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/2vzAyv6zFyznrWDGuZLHH8.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/2vzAyv6zFyznrWDGuZLHH8.
{"copyright_id":"0x102c2f872d370d41b071a67ca8f0bb8ec6fc296aaf24f10f6c18c6bbe280b5b6","isrc":"PHS032302336","name":"Buti Na Lang","registered_at":"2026-06-11T00:37:38Z","spotify_id":"3saVOS6ZjEojIzhszNmygo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102c2f872d370d41b071a67ca8f0bb8ec6fc296aaf24f10f6c18c6bbe280b5b6. 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/3saVOS6ZjEojIzhszNmygo.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/3saVOS6ZjEojIzhszNmygo.
{"copyright_id":"0xe67d11a86626d531e11fcbcbe5cb42e7b8624a1512604dc2c969aa749a10c38e","isrc":"PHS032302531","name":"Balse Ng Gabi - Remix","registered_at":"2026-06-06T14:23:27Z","spotify_id":"6TuTH64KV8nSuTrvPAVeSU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67d11a86626d531e11fcbcbe5cb42e7b8624a1512604dc2c969aa749a10c38e. 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/6TuTH64KV8nSuTrvPAVeSU.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/6TuTH64KV8nSuTrvPAVeSU.