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 0xf6a53436bd867e86a560e48f99353f899c56bfecfd956db432d44bc368ba08ba. 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/a20a9353-f06f-464c-9b15-b5eb756e3d84.json and https://artists.proofprofile.net/proofs/artist/a20a9353-f06f-464c-9b15-b5eb756e3d84.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 0xc31127d2a31c228e02924a6b11f3e8170c77d112815c10dfcf1d43b1ce1d3ad9. 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/3x1vKf57p20RpawVNLEZ4w.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/3x1vKf57p20RpawVNLEZ4w.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7039939007e05c98d950051e4ae1d1504084e21889cb8eca589fb89d6e95b328. 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/4QzBuqNZ6EiUZmqXAghd2F.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/4QzBuqNZ6EiUZmqXAghd2F.
{"copyright_id":"0xf523a2fd3d145e9caf60aeabb777882595cc1ddf4d7d3aa1d686edb702570941","isrc":"USATO0700007","name":"No Bad News","registered_at":"2026-06-29T08:40:43Z","spotify_id":"5Xp2QeNr92Ffc7TUlikNmz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf523a2fd3d145e9caf60aeabb777882595cc1ddf4d7d3aa1d686edb702570941. 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/5Xp2QeNr92Ffc7TUlikNmz.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/5Xp2QeNr92Ffc7TUlikNmz.
Patty Griffin: Live from the Artists Den
Come On Baby Let Your Freedom Ring - Live 1992
Mavis Staples I'll Take You There: An All-Star Concert Celebration (Deluxe / Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ba325ebff7b00355129261a9bdaf5b6452ef2697ef655cd636933617832dfd. 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/03qSYwxRCavJccioep27Sx.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/03qSYwxRCavJccioep27Sx.
{"copyright_id":"0xc8c1da463c7b91bab6079cb67cedf00d8ea1e1249dc760af6c8b20c40354684d","isrc":"USRO21600840","name":"Boulder To Birmingham - Live","registered_at":"2026-06-04T12:30:05Z","spotify_id":"7BdOM9rzbOeyo7T1qZPMgQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c1da463c7b91bab6079cb67cedf00d8ea1e1249dc760af6c8b20c40354684d. 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/7BdOM9rzbOeyo7T1qZPMgQ.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/7BdOM9rzbOeyo7T1qZPMgQ.
Come On Up To The House: Women Sing Waits
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971db5435fe385432ffc5060b07528e6fe45376afb7b533f0a5bc4e8a22b522e. 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/62VvkTa3emHP3RN8uzNYU9.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/62VvkTa3emHP3RN8uzNYU9.
{"copyright_id":"0x7931feee29a86d0a5d3bc5282de4cc1d39415e213841e0d3bc7a00f940be851d","isrc":"USCN10802438","name":"Beautiful World","registered_at":"2026-06-24T15:16:01Z","spotify_id":"0PJje2bs9oPZVF5cfVBPHt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7931feee29a86d0a5d3bc5282de4cc1d39415e213841e0d3bc7a00f940be851d. 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/0PJje2bs9oPZVF5cfVBPHt.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/0PJje2bs9oPZVF5cfVBPHt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317073cb1504725de1b0dfc29e6822d8c0286183d1a2a42c897974d731f1b4b4. 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/6amT3RfH06XGxwD5EchJ3S.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/6amT3RfH06XGxwD5EchJ3S.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26d0d7a8d19b9f36292f08a5024e35a486a7d43880082ca281f2113b98c56d6. 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/75dNjpnhGwehQCNnFAkCtN.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/75dNjpnhGwehQCNnFAkCtN.
The Best Is Yet to Come - The Songs of Cy Coleman
{"copyright_id":"0x124228ae0bf94360a552af45a5ab42366c465a4ffcb8089fc8e81dbc33a048af","isrc":"USSNN1010003","name":"The Best is Yet to Come","registered_at":"2026-06-20T03:29:43Z","spotify_id":"3vDy6Tt03aIJ8P2IsFuJAn","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124228ae0bf94360a552af45a5ab42366c465a4ffcb8089fc8e81dbc33a048af. 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/3vDy6Tt03aIJ8P2IsFuJAn.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/3vDy6Tt03aIJ8P2IsFuJAn.
This One's for Him: A Tribute to Guy Clark
{"copyright_id":"0xe35e31be4e0f3cbaaba89007382207415573db2e29fcdaa585002696c05fb83c","isrc":"USQE90800009","name":"You Got Growin Up To Do","registered_at":"2026-06-11T11:09:13Z","spotify_id":"63qcH7YggdBOTCVRJ3cxix","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35e31be4e0f3cbaaba89007382207415573db2e29fcdaa585002696c05fb83c. 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/63qcH7YggdBOTCVRJ3cxix.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/63qcH7YggdBOTCVRJ3cxix.