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 0x9641636098852423dce9c2745c4644871ff3de78cca10cfe5ea9ef3fd72100f5. 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/cf8cb42d-fc76-47ae-b453-ed4cf80dc1dd.json and https://artists.proofprofile.net/proofs/artist/cf8cb42d-fc76-47ae-b453-ed4cf80dc1dd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hamilton (Original Broadway Cast Recording)
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 0xce2e868128c207e4ae1f6083ac9eb791456ae3108c42ed6387e17d851b64d8ce. 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/6lsFGDo1IEEPFKh94c9kFe.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/6lsFGDo1IEEPFKh94c9kFe.
The Motortown Revue: Please Mr. Postman / You’ve Really Got A Hold On Me / Do You Love Me - Motown The Musical - Original Broadway Cast Recording
Motown The Musical (Original Broadway Cast Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77c56f4af961afe1c03c06c315165b29c2221bae0868a40c65e7647668ade9e. 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/0gVXLQgxi5uwoirhIc2wrD.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/0gVXLQgxi5uwoirhIc2wrD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff081180b4378c81fc6dc8e62b056eb08a9644770d4630a3da04ea54603e193. 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/6OayizhVMOl1kEj7qtVWtd.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/6OayizhVMOl1kEj7qtVWtd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd200d1a9953c36d3bb95b8982e9d454fbbd41d907313d008e2cd36289c86714. 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/2U6QJ5TkuHyZ8FHpmtO0Hr.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/2U6QJ5TkuHyZ8FHpmtO0Hr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb98462e21d2198fca148f27b2d4cccc64a4f64efa2f3e8fc42715944f93850c. 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/2kCVEqf9OQSOvKeJNUmqXX.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/2kCVEqf9OQSOvKeJNUmqXX.
{"copyright_id":"0xbd597ba391d055dca7e5d9f2b4be016c99106a866bf1fc61f201c24fed2334f0","isrc":"USAT22406972","name":"Woodlawn Cemetery","registered_at":"2026-06-04T16:32:37Z","spotify_id":"5qpyY3cG2uvsc8kTGCNPUp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd597ba391d055dca7e5d9f2b4be016c99106a866bf1fc61f201c24fed2334f0. 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/5qpyY3cG2uvsc8kTGCNPUp.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/5qpyY3cG2uvsc8kTGCNPUp.
{"copyright_id":"0x327d9348d8f6a0d2b9a3b20b17bf54296c49513ed3454e1fa66a2aae7b6ec117","isrc":"USAT22406974","name":"A Track Fire And A Phone Call","registered_at":"2026-06-05T05:56:33Z","spotify_id":"3TExdDrh46g6d1pOrNrrYM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327d9348d8f6a0d2b9a3b20b17bf54296c49513ed3454e1fa66a2aae7b6ec117. 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/3TExdDrh46g6d1pOrNrrYM.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/3TExdDrh46g6d1pOrNrrYM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f4e2b0479d4e904d09a329f5c952a608b5db2f4e7b1e03474c382be4818519. 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/4Gw4BHBOuwmttIBUc8Kj2S.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/4Gw4BHBOuwmttIBUc8Kj2S.
{"copyright_id":"0x0c1900bf81328a5f08b086287824f0a5fddeaed3a1a7b9d4f58b0f48d1383555","isrc":"USAT22406980","name":"Outside Gray's Papaya","registered_at":"2026-06-05T06:00:14Z","spotify_id":"3XXZvxVGKS9qfYyn2Tqu1P","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1900bf81328a5f08b086287824f0a5fddeaed3a1a7b9d4f58b0f48d1383555. 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/3XXZvxVGKS9qfYyn2Tqu1P.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/3XXZvxVGKS9qfYyn2Tqu1P.
{"copyright_id":"0x96335b8a75c43a1c3eee8050e21ec26067df2fdfbdb10d5747dab020ebad95b1","isrc":"USAT22406981","name":"Sick Of Runnin'","registered_at":"2026-06-04T16:38:25Z","spotify_id":"6E8HNE7irbQBd0URV9b1IY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96335b8a75c43a1c3eee8050e21ec26067df2fdfbdb10d5747dab020ebad95b1. 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/6E8HNE7irbQBd0URV9b1IY.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/6E8HNE7irbQBd0URV9b1IY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184ccfd2c81800a0487535edfa25833b8a537e66ea53d39a761b95f23fa414a0. 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/1bDnqcV4bmvrCsC2mqwgHU.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/1bDnqcV4bmvrCsC2mqwgHU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f3bc7c0a304e2d5a96c22983694a8e8a23899cc1080472490df06e09011be2. 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/3yyQ5V0ccgptAGVV0MswUQ.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/3yyQ5V0ccgptAGVV0MswUQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d191f244b2969c197aaa5039634cb5ff12c97a553e1768f771dff6d5835e035. 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/1YYW6pHETjvSip8k0FMyYL.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/1YYW6pHETjvSip8k0FMyYL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c04c4b109ee8d9afc5d56c7e647443d1d71172150bdc0cc544a38409890dc4a. 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/1oiSgoFYRGy0H5lnenRnfZ.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/1oiSgoFYRGy0H5lnenRnfZ.