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 0xa8991b8df9822f56be2c8b59bd6c7552d7ae2303dd49f53d5f329039d965bbf5. 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/b266c085-ffb1-432a-be33-da80c00a3c54.json and https://artists.proofprofile.net/proofs/artist/b266c085-ffb1-432a-be33-da80c00a3c54.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 0xb30a66b3ce6072cd173298977f36c60b59823c6ba79688fde72effb42be8a0b1. 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/3duP6mBVDsHM8ioN7o7dAK.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/3duP6mBVDsHM8ioN7o7dAK.
{"copyright_id":"0xaca6e49e68c1a596d21f8f6254209177d81f91a1284bf8945ca86c646af485e3","isrc":"USUG11700040","name":"When Someone Stops Loving You","registered_at":"2026-06-04T10:51:00Z","spotify_id":"7A55QoGK0vf8lGNtaWZm45","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca6e49e68c1a596d21f8f6254209177d81f91a1284bf8945ca86c646af485e3. 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/7A55QoGK0vf8lGNtaWZm45.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/7A55QoGK0vf8lGNtaWZm45.
{"copyright_id":"0x261c75cef7526ff13a9bf4ec1a0c4a4ace171522602b41eda90a20ffbff826d2","isrc":"USCN11000030","name":"Little White Church","registered_at":"2026-06-04T06:56:23Z","spotify_id":"0f73zOCdBx6ZPdiBjwN1AP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261c75cef7526ff13a9bf4ec1a0c4a4ace171522602b41eda90a20ffbff826d2. 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/0f73zOCdBx6ZPdiBjwN1AP.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/0f73zOCdBx6ZPdiBjwN1AP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335c14f656c51263978badb844f4f70bd788eb78e01ca49a7c6e62f9455d7efd. 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/506ZPBdnMp2dpq800lwmRg.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/506ZPBdnMp2dpq800lwmRg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d6d9f95cc1079ba797271e9454f6622f5521019c2064b45d5558a967570801. 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/7n1uFjvFx1apfp6WomeoGX.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/7n1uFjvFx1apfp6WomeoGX.
reputation Stadium Tour Surprise Song Playlist
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6638bd89b2f822a0f271103da6000cb13308c31734a84872dc513f3dbafb438f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3EXetjrGgwIjDRNn6YA8sa.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/3EXetjrGgwIjDRNn6YA8sa.
{"copyright_id":"0x28957d8baa345682efb96eb7890c224707917b8b32833a9cb69b705c77e43773","isrc":"USLXJ1907461","name":"Don’t Threaten Me With A Good Time","registered_at":"2026-06-05T20:37:04Z","spotify_id":"0UsEU29nx7wcyNEsGIA6qc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28957d8baa345682efb96eb7890c224707917b8b32833a9cb69b705c77e43773. 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/0UsEU29nx7wcyNEsGIA6qc.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/0UsEU29nx7wcyNEsGIA6qc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28d6692fc6fa52b0dbf16ffdb0f51943acc79969b9776999f4e1e3a1d01dcc2. 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/3xcyAHzKbIqfij1NHHpjcD.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/3xcyAHzKbIqfij1NHHpjcD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28957d8baa345682efb96eb7890c224707917b8b32833a9cb69b705c77e43773. 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/640a76CXhbaBqamyiGoQi3.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/640a76CXhbaBqamyiGoQi3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d6d9f95cc1079ba797271e9454f6622f5521019c2064b45d5558a967570801. 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/676tQQmFrilCR8L7kxRcGd.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/676tQQmFrilCR8L7kxRcGd.
Stars in the City (feat. Little Big Town)
{"copyright_id":"0xcbace07f901da11ab2330ae0947240490fcab6ca55244a283d595be4551ba9e2","isrc":"USRN11700018","name":"Stars in the City (feat. Little Big Town)","registered_at":"2026-06-04T10:38:26Z","spotify_id":"55ccxeuwJuxZF8MHsJqOzh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbace07f901da11ab2330ae0947240490fcab6ca55244a283d595be4551ba9e2. 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/55ccxeuwJuxZF8MHsJqOzh.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/55ccxeuwJuxZF8MHsJqOzh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac6fe5053886b6c8644cd88f0df6e590731611437088064d8d1bef9cc52d5e4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6Yk1Cw9R10P4GTfkL5oolj.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/6Yk1Cw9R10P4GTfkL5oolj.