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 0x3ba44ec6721e1ee19547bb74804f924a58849b892e51bebd3844044607649fc6. 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/8ea1bf8f-9d57-4a8c-94ee-6f1dfbe2f386.json and https://artists.proofprofile.net/proofs/artist/8ea1bf8f-9d57-4a8c-94ee-6f1dfbe2f386.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
November 16, 2000 The Day Houston Died (Chopped & Screwed)
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 0xd78598ad4bb52e0e8af0b5060fba35616463fdc12047a230b71897bb76679ed5. 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/5dgPoFgTMfe8Ys5wMTqsdI.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/5dgPoFgTMfe8Ys5wMTqsdI.
{"copyright_id":"0xac2c57493fb53ae016f286e017e646cd12c9cc62db5b639ff7ead2acee9573bd","isrc":"USXQS1410284","name":"Don’t Let Them Fool Ya","registered_at":"2026-06-29T02:50:29Z","spotify_id":"1xcDRYJTrh979bwolKgHsk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2c57493fb53ae016f286e017e646cd12c9cc62db5b639ff7ead2acee9573bd. 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/1xcDRYJTrh979bwolKgHsk.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/1xcDRYJTrh979bwolKgHsk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a19d52fbdac39dd039d10b89894404196b88aa742f1529ef42538154d1f0f37. 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/3KsfR2AKCbryqAJ9ukpTFe.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/3KsfR2AKCbryqAJ9ukpTFe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ce436c4687519fa7829b99990b6ad01eb9a20fcaa23aa3fdc5b18733407a9d. 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/4OMAtcDas4VD0wgT8h07du.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/4OMAtcDas4VD0wgT8h07du.
{"copyright_id":"0xdd437aa8d6043f7a3b86138306f6a8beb5c094056fdd9784b8a8e00565e1bbc6","isrc":"USXQS1410260","name":"Freestyle 4","registered_at":"2026-06-20T10:03:41Z","spotify_id":"72pcrMvTsbBvVWHzkgdbCB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd437aa8d6043f7a3b86138306f6a8beb5c094056fdd9784b8a8e00565e1bbc6. 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/72pcrMvTsbBvVWHzkgdbCB.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/72pcrMvTsbBvVWHzkgdbCB.
{"copyright_id":"0xbd2d148f5d4abd7959b23c7c95eae7a73ff4362ed57e2239eb4a1060dd965432","isrc":"USXQS1410261","name":"Ounce, Quarter's, Key's","registered_at":"2026-06-20T10:00:11Z","spotify_id":"1I3EYXjeE96L7ZiusfAUwW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2d148f5d4abd7959b23c7c95eae7a73ff4362ed57e2239eb4a1060dd965432. 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/1I3EYXjeE96L7ZiusfAUwW.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/1I3EYXjeE96L7ZiusfAUwW.
{"copyright_id":"0xa191bbd7c47958b4949f5272d2ceedca11f2601076abf6616d0db1d0194d871f","isrc":"USXQS1410263","name":"Freestyle 7","registered_at":"2026-06-09T09:34:33Z","spotify_id":"4yGVQzLLmpRczikZV7TRYU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa191bbd7c47958b4949f5272d2ceedca11f2601076abf6616d0db1d0194d871f. 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/4yGVQzLLmpRczikZV7TRYU.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/4yGVQzLLmpRczikZV7TRYU.
{"copyright_id":"0x1f7e2fd4826bf6bfb7d25e26947abe7d92779a36e6c2bdc18fa9a5116e9d726a","isrc":"USXQS1410264","name":"Get That Doe","registered_at":"2026-06-25T12:02:51Z","spotify_id":"0J2ymMYuOIKUo77pDe37ei","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7e2fd4826bf6bfb7d25e26947abe7d92779a36e6c2bdc18fa9a5116e9d726a. 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/0J2ymMYuOIKUo77pDe37ei.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/0J2ymMYuOIKUo77pDe37ei.