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 0x0710ccb4087a05bd646c89809969a3ffe278c1792cc5bcc5d45fabf963d4fbb0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d32cb2ee-838a-4422-8998-b8e118aa4b92.json and https://artists.proofprofile.net/proofs/artist/d32cb2ee-838a-4422-8998-b8e118aa4b92.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 0x2a86050a71fec98af6607f80c170ab9a69506472466d26bfeeb8e28ae0a4dafc. 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/0uMur9BAwuzsShojxBi6ag.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/0uMur9BAwuzsShojxBi6ag.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa72d5ffbc8ed93e7f720a11b7b9f90a84d51c591a536ea2a4d887439246948b. 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/5JlH51YDYsGj2dyEJKKjcN.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/5JlH51YDYsGj2dyEJKKjcN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50096e9820979ac163acce84814938f8424ba8ff98d5537cdfabf432e3909660. 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/4Az17HfqonKSWNsaLgTBeK.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/4Az17HfqonKSWNsaLgTBeK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3989ae33f633ecd397951076b7c639cec82a07f8e2983f595d46fd6a10d4dfb. 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/6fIvjDuusQK59brMgHV9qb.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/6fIvjDuusQK59brMgHV9qb.
{"copyright_id":"0x10c6c0c9d07ab82db11573a42bd46456fe2246357d0d2b2ec77478033fe1cded","isrc":"USCN11000137","name":"Come Back Song","registered_at":"2026-06-01T15:06:42Z","spotify_id":"4sHOAALFZiNa4wukjPSBpq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c6c0c9d07ab82db11573a42bd46456fe2246357d0d2b2ec77478033fe1cded. 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/4sHOAALFZiNa4wukjPSBpq.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/4sHOAALFZiNa4wukjPSBpq.
Ms. Drive Me Crazy (feat. Darius Rucker & City Spud)
{"copyright_id":"0x5730cf8ecb459c63b9be1246f585556e45505572cf614aa082dbad9bb6c1f20d","isrc":"USQX92103008","name":"Ms. Drive Me Crazy (feat. Darius Rucker & City Spud)","registered_at":"2026-06-05T07:18:36Z","spotify_id":"7lphCl31xQlZo4wl6hwt7m","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5730cf8ecb459c63b9be1246f585556e45505572cf614aa082dbad9bb6c1f20d. 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/7lphCl31xQlZo4wl6hwt7m.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/7lphCl31xQlZo4wl6hwt7m.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fa1868719ff99b1400285055a702ccb4133012c3ba78b7c44b5ac765b6d8d8. 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/04FGSzMOj2Axx91BaeD8kz.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/04FGSzMOj2Axx91BaeD8kz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1f906a3840d3aa1512cd10c913cdf72b884924fd6e2336e8c12213d9e0a61d. 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/1MYG4bJ6QYUGrNYOc36idR.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/1MYG4bJ6QYUGrNYOc36idR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6f8944081a315a7f1a5110ffd7131630de1b9b093a03200d454273a5b82084. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7nzbdPYlaoVjV42rzBWStH.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/7nzbdPYlaoVjV42rzBWStH.
Brett Young & Friends Sing The Christmas Classics
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b41d52d53135624e2225466c665a9c52c73a7e9c86823da390233058ceec56a. 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/1hecBi6qXM8bjTPnJjr205.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/1hecBi6qXM8bjTPnJjr205.
{"copyright_id":"0xc2fa1868719ff99b1400285055a702ccb4133012c3ba78b7c44b5ac765b6d8d8","isrc":"QMRSZ2001437","name":"Why Things Happen","registered_at":"2026-06-06T08:56:36Z","spotify_id":"0oZnvRi8PjNqRcvp7ZObSK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fa1868719ff99b1400285055a702ccb4133012c3ba78b7c44b5ac765b6d8d8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0oZnvRi8PjNqRcvp7ZObSK.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/0oZnvRi8PjNqRcvp7ZObSK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048b42a6685a77dbf66dc5bfb91eeb6b435cc5143834ba883c835fdf4cbc864c. 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/7EVF80MKY1H24yE1o0Fi8T.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/7EVF80MKY1H24yE1o0Fi8T.
{"copyright_id":"0xd4a20b579a22d984a64719ff9ee05a71e63a5b3b72972ecc1f6c9255f2568c37","isrc":"USUM72403549","name":"Never Been Over","registered_at":"2026-06-05T06:31:15Z","spotify_id":"5CfsbLLaJ6GGzEuRjYFRhT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a20b579a22d984a64719ff9ee05a71e63a5b3b72972ecc1f6c9255f2568c37. 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/5CfsbLLaJ6GGzEuRjYFRhT.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/5CfsbLLaJ6GGzEuRjYFRhT.
{"copyright_id":"0x51e7eddfc556a0e313a29a8fe6df8de41977a5b3cec7dcfc8644c6afb05793bf","isrc":"USUM72308054","name":"Never Been Over","registered_at":"2026-06-11T00:55:35Z","spotify_id":"2b4LzCluOTYn98673GoTRM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e7eddfc556a0e313a29a8fe6df8de41977a5b3cec7dcfc8644c6afb05793bf. 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/2b4LzCluOTYn98673GoTRM.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/2b4LzCluOTYn98673GoTRM.
Love Do What It Do (feat. Darius Rucker)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6f8944081a315a7f1a5110ffd7131630de1b9b093a03200d454273a5b82084. 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/3RYaCdnY6PnuKVTgo0igSd.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/3RYaCdnY6PnuKVTgo0igSd.
キャンプが楽しくなるナチュラル・ロック