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 0xdbb4f87619a63481ee387c587754a8e554820d38b4d934044d6ffabf9da760c0. 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/ecfa49e4-8034-479e-b612-7afb7ba88ec5.json and https://artists.proofprofile.net/proofs/artist/ecfa49e4-8034-479e-b612-7afb7ba88ec5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xe56e242bfb7febb2576b8a3f7602b14383a6b8a5de8f0bc779d4f3c7e0ab2ed9","isrc":"GBCHB2000029","name":"Taking My Chances","registered_at":"2026-06-05T14:11:51Z","spotify_id":"1oYKv2SGVruMiQhVFtwNjp","type":"track"}
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 0xe56e242bfb7febb2576b8a3f7602b14383a6b8a5de8f0bc779d4f3c7e0ab2ed9. 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/1oYKv2SGVruMiQhVFtwNjp.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/1oYKv2SGVruMiQhVFtwNjp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72533600e9076770288f6017852b90b26dc3f7483db3c44696011d8e0a841969. 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/5Sz8iego5KiDUnnh6K0fsc.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/5Sz8iego5KiDUnnh6K0fsc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf124b306b318b153c6ec8b6edde1e1c49f142fa4414edeb50a0f8c8bb4ebba54. 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/5r4txCywjP0MEiuuuLomKL.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/5r4txCywjP0MEiuuuLomKL.
{"copyright_id":"0x61d0bdb8f0d4ac6f09492ec8c575ac4af614f14e8a2783156ff0f0e1abbdb13c","isrc":"GBCHB2000032","name":"Some People","registered_at":"2026-06-07T09:52:11Z","spotify_id":"06FMbsjbe6g7eAPy4IrrzE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d0bdb8f0d4ac6f09492ec8c575ac4af614f14e8a2783156ff0f0e1abbdb13c. 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/06FMbsjbe6g7eAPy4IrrzE.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/06FMbsjbe6g7eAPy4IrrzE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1253c55489726257931ba7be5cdb59065b68c9e8319ab10b28a9a732d20414. 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/4QuhC8I8nG51nAbqrUXnot.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/4QuhC8I8nG51nAbqrUXnot.
{"copyright_id":"0xddfcceaebb8958178693d7a7abcacebecd88ee70d2e1e2169132765baa90e073","isrc":"GBCHB2000034","name":"Solar Fire","registered_at":"2026-06-07T16:01:57Z","spotify_id":"733EFKmEIutt7NJ5LBN3Kk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfcceaebb8958178693d7a7abcacebecd88ee70d2e1e2169132765baa90e073. 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/733EFKmEIutt7NJ5LBN3Kk.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/733EFKmEIutt7NJ5LBN3Kk.
{"copyright_id":"0xbe791ee27de87ca886b43a564d17d3596087931a8727bada7becefb875e02289","isrc":"GBCHB2000035","name":"You Don't Know Me","registered_at":"2026-06-09T11:39:49Z","spotify_id":"1uDnqEOIaVOlSaNnYunfI4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe791ee27de87ca886b43a564d17d3596087931a8727bada7becefb875e02289. 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/1uDnqEOIaVOlSaNnYunfI4.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/1uDnqEOIaVOlSaNnYunfI4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ee2cb97f6c0ce6e4a0e7934da5c05867824dd8277666f0ef59db77c34220fc. 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/0JBB2sPIxKM85a7j9TCh7z.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/0JBB2sPIxKM85a7j9TCh7z.
{"copyright_id":"0x11da76dbfcc6fd1b587274eb9b7aeb272b39ff4b4c32b5c8bd5115b8429580c8","isrc":"GBCHB2000037","name":"'Til Tomorrow","registered_at":"2026-06-09T21:30:22Z","spotify_id":"5pSjrxi2WRXjRVk3TgSMNV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11da76dbfcc6fd1b587274eb9b7aeb272b39ff4b4c32b5c8bd5115b8429580c8. 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/5pSjrxi2WRXjRVk3TgSMNV.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/5pSjrxi2WRXjRVk3TgSMNV.
{"copyright_id":"0x442fd6193ca897ca56f869cbaa2fc0a742e9108cf1a6bd48dd947cadcdf1f04c","isrc":"GBCHB2100014","name":"Better Days","registered_at":"2026-06-08T06:23:25Z","spotify_id":"2v6SehftHMdzKYgYzhMsPm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442fd6193ca897ca56f869cbaa2fc0a742e9108cf1a6bd48dd947cadcdf1f04c. 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/2v6SehftHMdzKYgYzhMsPm.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/2v6SehftHMdzKYgYzhMsPm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24656315adf0ef8a9f864f2e444b35484033d0ea9a99dbeb72b57f32677018b. 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/5d985Hv6H0QVyDEzu0Z6Pw.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/5d985Hv6H0QVyDEzu0Z6Pw.
{"copyright_id":"0x3ccecf98c6d860ea3d70e92b66c2290d2ef03a531ab86a3c0c0805d58c978c2c","isrc":"GBCHB2000038","name":"Hate and Love","registered_at":"2026-06-09T11:37:29Z","spotify_id":"1abhk0yQji0GGTWwoCts4C","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ccecf98c6d860ea3d70e92b66c2290d2ef03a531ab86a3c0c0805d58c978c2c. 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/1abhk0yQji0GGTWwoCts4C.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/1abhk0yQji0GGTWwoCts4C.
{"copyright_id":"0x167f1d0ce26f72c69b0671bd87bd1d42f23a504989ce275ffebe8027923d8393","isrc":"GBCHB2000039","name":"Rise Again (feat. Mike Portnoy)","registered_at":"2026-06-10T22:45:07Z","spotify_id":"6RfwEU3eYDEkZihDyJoEWf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167f1d0ce26f72c69b0671bd87bd1d42f23a504989ce275ffebe8027923d8393. 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/6RfwEU3eYDEkZihDyJoEWf.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/6RfwEU3eYDEkZihDyJoEWf.
Harder & Heavier - '60s British Invasion Goes Metal
A Salute To Ozzy Osbourne & Black Sabbath
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9d01310633327d8957592d6ff6a2bd7ee8f0bce5d5839667d708d0a034b8d0. 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/4O05ft0PNYdmsBxfIVJiIY.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/4O05ft0PNYdmsBxfIVJiIY.