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 0x01d7c0eb43877027dad609de1827958660a03593b57f98b0b68e24df0885f752. 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/e8b300a2-ae14-4d37-a31d-d66a0c4b0a43.json and https://artists.proofprofile.net/proofs/artist/e8b300a2-ae14-4d37-a31d-d66a0c4b0a43.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 0xb883d59d2fc4af64198b87301c0d8856565a9c121858d9a91a70dd2742e4a8d6. 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/72kHV5MBvdLoqYIHjTlr55.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/72kHV5MBvdLoqYIHjTlr55.
{"copyright_id":"0xbfcecd8b124cdaac2443c1292e346b531214eb50d15bf39fb50fdf2434635853","isrc":"NOAMM0400417","name":"Fields Of Fortune","registered_at":"2026-06-05T22:46:51Z","spotify_id":"3yp4saoF57DwJZwzCuhZaP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfcecd8b124cdaac2443c1292e346b531214eb50d15bf39fb50fdf2434635853. 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/3yp4saoF57DwJZwzCuhZaP.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/3yp4saoF57DwJZwzCuhZaP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a8b35a6367d4daa51dc9336f5002682f6d0b5ef3ba61d0088e3a432b1612b0. 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/4ZB1Kpvo8WjGbIbyUXyG2z.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/4ZB1Kpvo8WjGbIbyUXyG2z.
{"copyright_id":"0xa60c7a287e99f9d4e4c227f9b27908a4fb1ef19d0422a67fc129a94ee9d67915","isrc":"NOAMM0500017","name":"Always There - Int Version","registered_at":"2026-06-09T19:45:38Z","spotify_id":"1g0hqjV5FMEm5jBDdM2DbS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60c7a287e99f9d4e4c227f9b27908a4fb1ef19d0422a67fc129a94ee9d67915. 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/1g0hqjV5FMEm5jBDdM2DbS.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/1g0hqjV5FMEm5jBDdM2DbS.
{"copyright_id":"0x68050971fbf60f0440cf69bf204ba63c7eb7f2927747b53a9e44ebeea353d067","isrc":"NOAMM0400420","name":"When Darkness Falls ( Ode To Kvaase)","registered_at":"2026-06-06T18:18:29Z","spotify_id":"6wNOZqMjz75IhbQ2mZhTYB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68050971fbf60f0440cf69bf204ba63c7eb7f2927747b53a9e44ebeea353d067. 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/6wNOZqMjz75IhbQ2mZhTYB.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/6wNOZqMjz75IhbQ2mZhTYB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319bad122b024bf539845b51804d0bdaf767c69a13ae1126b3f034e79b20577d. 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/4G3tv0qZ4W20ZOvOb02o4P.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/4G3tv0qZ4W20ZOvOb02o4P.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c64b5e6c59f23408b41b7d48e8330c0cec3cc039b7c30c32f24996bdb7d8c2b. 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/4rXC5hvQ8mGWCLjl2Ufsfp.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/4rXC5hvQ8mGWCLjl2Ufsfp.
{"copyright_id":"0xb969fe0318216712f781df7a7852a485e2f68c98e89232bffb0c5cdc888d5fd1","isrc":"NOAMM0400423","name":"Searching for the past","registered_at":"2026-06-06T18:19:37Z","spotify_id":"402hnzMKdtY0BdnwpE3GiU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb969fe0318216712f781df7a7852a485e2f68c98e89232bffb0c5cdc888d5fd1. 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/402hnzMKdtY0BdnwpE3GiU.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/402hnzMKdtY0BdnwpE3GiU.
{"copyright_id":"0xf4203da4d2264e256f99444fabbd10fbe113aeab155079859cab92c9ae4c70a8","isrc":"NOAMM0400425","name":"Daughters Of Erin","registered_at":"2026-06-11T16:21:41Z","spotify_id":"45KgWhSpNp83Ce6ChzTrJs","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4203da4d2264e256f99444fabbd10fbe113aeab155079859cab92c9ae4c70a8. 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/45KgWhSpNp83Ce6ChzTrJs.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/45KgWhSpNp83Ce6ChzTrJs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a214fe2f7def3b5fda01126fc6e7c8b11545669047a3eab637ffe664f48a224. 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/6V6r7fC4di6rGf9RX3q9uX.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/6V6r7fC4di6rGf9RX3q9uX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7c242c4a03052dff1732a13b488fea558d135be246c4b331f07f1188f169cd. 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/6uZTK8nmqVGIFvsE8TfEeK.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/6uZTK8nmqVGIFvsE8TfEeK.
{"copyright_id":"0x4fc4343e829ba70ce70c2a368b56dbcb7f2375a5909eec3aac32a37f6bf1f227","isrc":"NOAMM0400430","name":"Raise Your Voices","registered_at":"2026-06-10T19:21:04Z","spotify_id":"1f2D9usJ72WtV9bwQgSFZS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc4343e829ba70ce70c2a368b56dbcb7f2375a5909eec3aac32a37f6bf1f227. 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/1f2D9usJ72WtV9bwQgSFZS.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/1f2D9usJ72WtV9bwQgSFZS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133aee45de231e73993206c2f98413fdaff31263b5a71f99a2a45a3f2236a42b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/79iYouDZ8NVxYNJSS68nlC.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/79iYouDZ8NVxYNJSS68nlC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958913d6f9964474e11a83fbbeda65d44536d1dde9287527460e886151d20598. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0v1ZBkjmHkmSLtkvtzp5fW.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/0v1ZBkjmHkmSLtkvtzp5fW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ba9f6fbcc09d995a6f80415f1d857c6912618b07231f6a31c51557cba6838a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5WHkhCwCiwalaF4ev88mcX.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/5WHkhCwCiwalaF4ev88mcX.
La Prima Donna: Sumi Jo 30th Debut Anniversary
{"copyright_id":"0x008bbeef4fa11131b5843c4ebdd58e919f125862f3aa8685986082c41d0c7275","isrc":"NOUM72100017","name":"Sleepsong - Piano Version","registered_at":"2026-06-06T18:33:38Z","spotify_id":"7bgEQURtRRMaDNmKV2B1DI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008bbeef4fa11131b5843c4ebdd58e919f125862f3aa8685986082c41d0c7275. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7bgEQURtRRMaDNmKV2B1DI.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/7bgEQURtRRMaDNmKV2B1DI.