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 0x0cd9207cd965e253e9d7d47aed7eed918d1e71805dd914e7fc1509412a12a5e8. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/734a2ab5-2763-4af8-a3ba-e6904ce90b9d.json and https://artists.proofprofile.net/proofs/artist/734a2ab5-2763-4af8-a3ba-e6904ce90b9d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Alive (with Calle Lehmann) - Stadiumx Remix
{"copyright_id":"0x49674ad2f7d6dbba6d7f7084245d71ef0869b90a409c2693a3e5fa81d9778308","isrc":"USUM72213138","name":"Alive (with Calle Lehmann) - Stadiumx Remix","registered_at":"2026-06-09T07:25:05Z","spotify_id":"01mFUynFtMeccWpfjDS6M8","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 0x49674ad2f7d6dbba6d7f7084245d71ef0869b90a409c2693a3e5fa81d9778308. 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/01mFUynFtMeccWpfjDS6M8.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/01mFUynFtMeccWpfjDS6M8.
Alive (with Calle Lehmann) - yetep Remix
{"copyright_id":"0xb96ddce4edc490505b922f8e6982c9c6e0f82739ba8ca23d2d18485f259ed5af","isrc":"USUM72213139","name":"Alive (with Calle Lehmann) - yetep Remix","registered_at":"2026-06-19T10:17:55Z","spotify_id":"7McP913j7xmfeQ36Pvc8tR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96ddce4edc490505b922f8e6982c9c6e0f82739ba8ca23d2d18485f259ed5af. 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/7McP913j7xmfeQ36Pvc8tR.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/7McP913j7xmfeQ36Pvc8tR.
Alive (with Calle Lehmann) - Low Blow Remix
{"copyright_id":"0x6eebfad745302bbf5b8f917131af91c7407316d3b18068884c7b9fed9950e1fc","isrc":"USUM72207524","name":"Alive (with Calle Lehmann)","registered_at":"2026-06-04T11:56:58Z","spotify_id":"3PUuuuxZL07dJP3YmIFwN4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eebfad745302bbf5b8f917131af91c7407316d3b18068884c7b9fed9950e1fc. 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/3PUuuuxZL07dJP3YmIFwN4.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/3PUuuuxZL07dJP3YmIFwN4.
{"copyright_id":"0x6eebfad745302bbf5b8f917131af91c7407316d3b18068884c7b9fed9950e1fc","isrc":"USUM72207524","name":"Alive (with Calle Lehmann)","registered_at":"2026-06-04T11:56:58Z","spotify_id":"4deWlPS9a4WH2UmdvsamrB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eebfad745302bbf5b8f917131af91c7407316d3b18068884c7b9fed9950e1fc. 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/4deWlPS9a4WH2UmdvsamrB.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/4deWlPS9a4WH2UmdvsamrB.
{"copyright_id":"0xf2d878afa007f84d8a8eedce9531d1118940a4fad86da733767cf0bda5c4e84a","isrc":"USUM72204688","name":"You Were Loved (with OneRepublic)","registered_at":"2026-06-04T09:15:58Z","spotify_id":"30oeWK9soJlcgZsu3IkTvE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d878afa007f84d8a8eedce9531d1118940a4fad86da733767cf0bda5c4e84a. 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/30oeWK9soJlcgZsu3IkTvE.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/30oeWK9soJlcgZsu3IkTvE.
All You Need To Know (feat. Calle Lehmann)
{"copyright_id":"0x1e4a7354726dd1f8720d7a7ec4e2cb642bd5cc8224f6102cde1e6f206e2bd53f","isrc":"USUM71904442","name":"All You Need To Know (feat. Calle Lehmann)","registered_at":"2026-06-01T20:30:15Z","spotify_id":"4TIkSdsNSfqpuq6ZYvCjAz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4a7354726dd1f8720d7a7ec4e2cb642bd5cc8224f6102cde1e6f206e2bd53f. 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/4TIkSdsNSfqpuq6ZYvCjAz.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/4TIkSdsNSfqpuq6ZYvCjAz.
{"copyright_id":"0xcf6fb67b7aa27cf5560e091146d69cc92ed82f5c66ce8e36d33d5a0ff383553d","isrc":"USUG12105327","name":"After You (feat. Calle Lehmann)","registered_at":"2026-06-04T08:36:37Z","spotify_id":"3TO4rCwrEgzkH20pG7DK4G","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6fb67b7aa27cf5560e091146d69cc92ed82f5c66ce8e36d33d5a0ff383553d. 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/3TO4rCwrEgzkH20pG7DK4G.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/3TO4rCwrEgzkH20pG7DK4G.
{"copyright_id":"0x6eebfad745302bbf5b8f917131af91c7407316d3b18068884c7b9fed9950e1fc","isrc":"USUM72207524","name":"Alive (with Calle Lehmann)","registered_at":"2026-06-04T11:56:58Z","spotify_id":"2GKmF1OdLscSLjPCg3pEwq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eebfad745302bbf5b8f917131af91c7407316d3b18068884c7b9fed9950e1fc. 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/2GKmF1OdLscSLjPCg3pEwq.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/2GKmF1OdLscSLjPCg3pEwq.
{"copyright_id":"0x1e4a7354726dd1f8720d7a7ec4e2cb642bd5cc8224f6102cde1e6f206e2bd53f","isrc":"USUM71904442","name":"All You Need To Know (feat. Calle Lehmann)","registered_at":"2026-06-01T20:30:14Z","spotify_id":"5WTS0WbynEqzOCWnHOV3Py","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4a7354726dd1f8720d7a7ec4e2cb642bd5cc8224f6102cde1e6f206e2bd53f. 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/5WTS0WbynEqzOCWnHOV3Py.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/5WTS0WbynEqzOCWnHOV3Py.
All You Need to Know - Orchestral Version
{"copyright_id":"0xa7a99698907750a1e1d8bc8821d907ceaf9975d7c845aaeaf7460409a9c54083","isrc":"USUM72023357","name":"All You Need to Know - Orchestral Version","registered_at":"2026-06-17T23:09:29Z","spotify_id":"76p7WL3Lyf6SjEwmPRwBi4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a99698907750a1e1d8bc8821d907ceaf9975d7c845aaeaf7460409a9c54083. 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/76p7WL3Lyf6SjEwmPRwBi4.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/76p7WL3Lyf6SjEwmPRwBi4.
{"copyright_id":"0x6eebfad745302bbf5b8f917131af91c7407316d3b18068884c7b9fed9950e1fc","isrc":"USUM72207524","name":"Alive (with Calle Lehmann)","registered_at":"2026-06-04T11:56:58Z","spotify_id":"2WhfdgUVyLRmztniPda5WA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eebfad745302bbf5b8f917131af91c7407316d3b18068884c7b9fed9950e1fc. 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/2WhfdgUVyLRmztniPda5WA.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/2WhfdgUVyLRmztniPda5WA.
{"copyright_id":"0x6eebfad745302bbf5b8f917131af91c7407316d3b18068884c7b9fed9950e1fc","isrc":"USUM72207524","name":"Alive (with Calle Lehmann)","registered_at":"2026-06-04T11:56:58Z","spotify_id":"51hVaIf1C2BF8SUGGEOfne","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eebfad745302bbf5b8f917131af91c7407316d3b18068884c7b9fed9950e1fc. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/51hVaIf1C2BF8SUGGEOfne.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/51hVaIf1C2BF8SUGGEOfne.
{"copyright_id":"0x6eebfad745302bbf5b8f917131af91c7407316d3b18068884c7b9fed9950e1fc","isrc":"USUM72207524","name":"Alive (with Calle Lehmann)","registered_at":"2026-06-04T11:56:58Z","spotify_id":"5mOpNQFT55rX05moe84LBI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eebfad745302bbf5b8f917131af91c7407316d3b18068884c7b9fed9950e1fc. 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/5mOpNQFT55rX05moe84LBI.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/5mOpNQFT55rX05moe84LBI.
{"copyright_id":"0x6eebfad745302bbf5b8f917131af91c7407316d3b18068884c7b9fed9950e1fc","isrc":"USUM72207524","name":"Alive (with Calle Lehmann)","registered_at":"2026-06-04T11:56:58Z","spotify_id":"5vCPJBaBDM5dWptrH3bfgR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eebfad745302bbf5b8f917131af91c7407316d3b18068884c7b9fed9950e1fc. 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/5vCPJBaBDM5dWptrH3bfgR.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/5vCPJBaBDM5dWptrH3bfgR.
{"copyright_id":"0x6eebfad745302bbf5b8f917131af91c7407316d3b18068884c7b9fed9950e1fc","isrc":"USUM72207524","name":"Alive (with Calle Lehmann)","registered_at":"2026-06-04T11:56:58Z","spotify_id":"0yXhhiMehYQiXIXT6XKLiq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eebfad745302bbf5b8f917131af91c7407316d3b18068884c7b9fed9950e1fc. 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/0yXhhiMehYQiXIXT6XKLiq.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/0yXhhiMehYQiXIXT6XKLiq.
After You (feat. Calle Lehmann) - MOTi Remix
After You (feat. Calle Lehmann) [MOTi Remix]
{"copyright_id":"0x02600743a0d00778f81d633508e327c3f79134772ef9337beaebddf690edd17a","isrc":"USUG12106447","name":"After You (feat. Calle Lehmann) - MOTi Remix","registered_at":"2026-06-08T16:58:28Z","spotify_id":"7Ap6DFgZoI9vOqxHyXmtMt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02600743a0d00778f81d633508e327c3f79134772ef9337beaebddf690edd17a. 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/7Ap6DFgZoI9vOqxHyXmtMt.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/7Ap6DFgZoI9vOqxHyXmtMt.
{"copyright_id":"0xcf6fb67b7aa27cf5560e091146d69cc92ed82f5c66ce8e36d33d5a0ff383553d","isrc":"USUG12105327","name":"After You (feat. Calle Lehmann)","registered_at":"2026-06-04T08:36:37Z","spotify_id":"72zhLY7Fg7EIr128afO145","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6fb67b7aa27cf5560e091146d69cc92ed82f5c66ce8e36d33d5a0ff383553d. 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/72zhLY7Fg7EIr128afO145.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/72zhLY7Fg7EIr128afO145.
{"copyright_id":"0xcf6fb67b7aa27cf5560e091146d69cc92ed82f5c66ce8e36d33d5a0ff383553d","isrc":"USUG12105327","name":"After You (feat. Calle Lehmann)","registered_at":"2026-06-04T08:36:37Z","spotify_id":"6DiogHhtwkVgUHUDUJVuXV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6fb67b7aa27cf5560e091146d69cc92ed82f5c66ce8e36d33d5a0ff383553d. 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/6DiogHhtwkVgUHUDUJVuXV.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/6DiogHhtwkVgUHUDUJVuXV.
{"copyright_id":"0x4dd39a240331efc548f4ffcde76d1866eb1d500c38b1a00a3bfe5205d57abd21","isrc":"USA2P2444865","name":"LONELY (feat. Calle Lehmann)","registered_at":"2026-06-05T07:52:29Z","spotify_id":"0UKEtO76n81N1eOBpiqnk8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd39a240331efc548f4ffcde76d1866eb1d500c38b1a00a3bfe5205d57abd21. 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/0UKEtO76n81N1eOBpiqnk8.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/0UKEtO76n81N1eOBpiqnk8.