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 0x573449967f0946864c4b5a2c957507d5327e6ffb6d00794d4984362651340338. 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/d7368eff-db75-4121-9f0b-cfee3af0cea7.json and https://artists.proofprofile.net/proofs/artist/d7368eff-db75-4121-9f0b-cfee3af0cea7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x6d09fd7d2d404b9a71d97d044e4645a3d45bd28dd7dee11cacfde076cad1a988","isrc":"DKUM71400175","name":"Kom Tilbage Nu","registered_at":"2026-06-04T09:18:52Z","spotify_id":"598JrQyHZ5oviov9RFjsM8","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 0x6d09fd7d2d404b9a71d97d044e4645a3d45bd28dd7dee11cacfde076cad1a988. 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/598JrQyHZ5oviov9RFjsM8.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/598JrQyHZ5oviov9RFjsM8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c42266db078376c6559785f566c2edbf58fb975b7e39a63f6154432bb7aedc. 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/54lPqMlvnPSJsQUWbJyFjB.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/54lPqMlvnPSJsQUWbJyFjB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d451dd5f93736295f513b7dfd18a7b0ce34ed010981d8a734718fb12ef03770. 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/3zGYDROXYQsGeWi5uI3aBK.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/3zGYDROXYQsGeWi5uI3aBK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d86a04247a8bf122b1f84e3114ab404bc051f45284a0572475ea8674e85b0e5. 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/33kU5HDFNUjNR41bVSwGlb.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/33kU5HDFNUjNR41bVSwGlb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55b8c0e3b5548c0ebe0e34ac8e65848ae03e3c7c8d3d461ccaf2f9efdc76631. 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/5jXprEdalSvpcXtOVBZnLm.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/5jXprEdalSvpcXtOVBZnLm.
{"copyright_id":"0x6ba1dd20f329f38d6e082f1a22bb5a363f593a4a7367c2cc835ef6cbdf514271","isrc":"DKAAB9600606","name":"Disko Dørmand","registered_at":"2026-06-23T19:34:53Z","spotify_id":"0CvH49XKQueOBgneq5glnW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba1dd20f329f38d6e082f1a22bb5a363f593a4a7367c2cc835ef6cbdf514271. 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/0CvH49XKQueOBgneq5glnW.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/0CvH49XKQueOBgneq5glnW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1818f7d96d536b5397de823ae2f6ec5ceb6e44df4412f4df3f13e2dcaebab6. 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/0J30d7AdGKGgaeDviAWZVR.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/0J30d7AdGKGgaeDviAWZVR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ea2bae10f79e2b7a4bb257cdb02df1cd1b360a12495f915e2f5622345659b2. 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/0SRegj5vaB5EGrGousGJQ0.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/0SRegj5vaB5EGrGousGJQ0.
{"copyright_id":"0xeceea4c0660f5bf80605ead4f614abffc7e26f4063fd1552c48e74fb57d2ea30","isrc":"DKAAB9600610","name":"Jeg Finder Vej","registered_at":"2026-06-26T04:35:51Z","spotify_id":"4zxm5QNQnc7OCrycQQU6PJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeceea4c0660f5bf80605ead4f614abffc7e26f4063fd1552c48e74fb57d2ea30. 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/4zxm5QNQnc7OCrycQQU6PJ.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/4zxm5QNQnc7OCrycQQU6PJ.
{"copyright_id":"0x5c005791e52564610502f43c8da981a1af479dcffc68a0ef5e0195d612d357b9","isrc":"DKUM71400181","name":"Kom Tilbage Nu - Cutfather & Joe Remix","registered_at":"2026-06-22T12:05:55Z","spotify_id":"0W0dQayf4l0ElJmk4cjKdk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c005791e52564610502f43c8da981a1af479dcffc68a0ef5e0195d612d357b9. 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/0W0dQayf4l0ElJmk4cjKdk.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/0W0dQayf4l0ElJmk4cjKdk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb74f467ad04aed8aa16b63f7381880c1534b5b7f9bfde937aa4bd4f1fe69334. 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/2OZhER65VIuUuPpGu073PD.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/2OZhER65VIuUuPpGu073PD.
{"copyright_id":"0x1c7d8b2fc0fbb22bf050cb3aa5f4077202ea873a4b7ceebd414fcc2db8083ecf","isrc":"DKCC50800802","name":"I Dag Er Du Min","registered_at":"2026-06-22T12:06:03Z","spotify_id":"59zRpbel9G4A1BuSTNwcv4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7d8b2fc0fbb22bf050cb3aa5f4077202ea873a4b7ceebd414fcc2db8083ecf. 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/59zRpbel9G4A1BuSTNwcv4.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/59zRpbel9G4A1BuSTNwcv4.
{"copyright_id":"0xfb2740ac0bdaa1466c5ec2a7df333a5b5bd1651278b3ccda39a60d71b463dfcb","isrc":"DKCC50800803","name":"Du & Mig","registered_at":"2026-06-05T23:50:53Z","spotify_id":"4RH0lcQzrVDPweIuTOXxgC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2740ac0bdaa1466c5ec2a7df333a5b5bd1651278b3ccda39a60d71b463dfcb. 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/4RH0lcQzrVDPweIuTOXxgC.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/4RH0lcQzrVDPweIuTOXxgC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb8b9605040acbbda255e8db66236559f5c335134a58d4894ee0048d4624cfc. 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/6DSlN3LWDYbUgteZm2R1ej.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/6DSlN3LWDYbUgteZm2R1ej.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4211c1d0ab67cd20b8251f744d612b82a3d0af0e36d57b98ffca0a9d4947b311. 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/48wqEjQw8NSz05xTwLj7i9.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/48wqEjQw8NSz05xTwLj7i9.
{"copyright_id":"0x3669f9119cf3f8c90c569fe7b6754a27ce58f0e900bd0be0549d15c87ecadca9","isrc":"SEVJH1303903","name":"Engel - Hurtig","registered_at":"2026-06-22T12:03:31Z","spotify_id":"5UpqGGIbUYt8UyKqatiDdZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3669f9119cf3f8c90c569fe7b6754a27ce58f0e900bd0be0549d15c87ecadca9. 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/5UpqGGIbUYt8UyKqatiDdZ.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/5UpqGGIbUYt8UyKqatiDdZ.
{"copyright_id":"0x822f0d9c69a0df7e458f67dcf71be88fcdee1baf36f411373f5e16392efe1175","isrc":"DK2DY2400020","name":"Alt Det (feat. Noah Carter)","registered_at":"2026-06-02T02:10:38Z","spotify_id":"1knZ2cJRHNUeEidZvhypRm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822f0d9c69a0df7e458f67dcf71be88fcdee1baf36f411373f5e16392efe1175. 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/1knZ2cJRHNUeEidZvhypRm.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/1knZ2cJRHNUeEidZvhypRm.
{"copyright_id":"0x4211c1d0ab67cd20b8251f744d612b82a3d0af0e36d57b98ffca0a9d4947b311","isrc":"SEVJH1303901","name":"Sidste Skrig","registered_at":"2026-06-08T06:48:46Z","spotify_id":"4hhP9iXxdeVFGQ73qPxYWv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4211c1d0ab67cd20b8251f744d612b82a3d0af0e36d57b98ffca0a9d4947b311. 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/4hhP9iXxdeVFGQ73qPxYWv.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/4hhP9iXxdeVFGQ73qPxYWv.
{"copyright_id":"0x6d09fd7d2d404b9a71d97d044e4645a3d45bd28dd7dee11cacfde076cad1a988","isrc":"DKUM71400175","name":"Kom Tilbage Nu","registered_at":"2026-06-04T09:18:52Z","spotify_id":"28hdLdeEuP5v30UbBymcY1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d09fd7d2d404b9a71d97d044e4645a3d45bd28dd7dee11cacfde076cad1a988. 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/28hdLdeEuP5v30UbBymcY1.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/28hdLdeEuP5v30UbBymcY1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ea2bae10f79e2b7a4bb257cdb02df1cd1b360a12495f915e2f5622345659b2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1WttBHYVVj6cUsMF0wK2PU.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/1WttBHYVVj6cUsMF0wK2PU.
{"copyright_id":"0x6d09fd7d2d404b9a71d97d044e4645a3d45bd28dd7dee11cacfde076cad1a988","isrc":"DKUM71400175","name":"Kom Tilbage Nu","registered_at":"2026-06-04T09:18:52Z","spotify_id":"3j3zE6nN2zHB8r3QFuP8kG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d09fd7d2d404b9a71d97d044e4645a3d45bd28dd7dee11cacfde076cad1a988. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3j3zE6nN2zHB8r3QFuP8kG.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/3j3zE6nN2zHB8r3QFuP8kG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ea2bae10f79e2b7a4bb257cdb02df1cd1b360a12495f915e2f5622345659b2. 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/4QxQ9PqbBKXEtyQXtq4H8Z.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/4QxQ9PqbBKXEtyQXtq4H8Z.