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 0x69435a1ba4718fed75f2f3994d69056934dab67aba0398a0e5024f0a0dca2d9a. 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/cb5e68ce-09cf-4c3a-81af-a390f74b396f.json and https://artists.proofprofile.net/proofs/artist/cb5e68ce-09cf-4c3a-81af-a390f74b396f.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 0x8fb56d0645d1bb44caf6d295c87fe8807489916ca166054ea73aa02ce1c4a19d. 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/2MSFpYDPQc0L283N6rF2mj.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/2MSFpYDPQc0L283N6rF2mj.
{"copyright_id":"0x9d24d5bf8e50a1fb39e62e5e51244e4813770020e9291f50b93cd1c9e36bc6ce","isrc":"TCAFQ2174504","name":"Forever Active","registered_at":"2026-06-22T10:39:58Z","spotify_id":"0wPQ5tapcRwhrVwkrK8ec7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d24d5bf8e50a1fb39e62e5e51244e4813770020e9291f50b93cd1c9e36bc6ce. 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/0wPQ5tapcRwhrVwkrK8ec7.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/0wPQ5tapcRwhrVwkrK8ec7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c309eeceb91efe7da24622a9375b09696e1fc89130ef633854f5685c2578a8. 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/2qE8YcYtuZa57axMVOk6lG.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/2qE8YcYtuZa57axMVOk6lG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1847731e4f5dd36f0e75e862d0d3e6b2cdcf253a0c43132aa41f13209fcd840d. 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/2LjttB9zCWSlMb8xONqBYu.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/2LjttB9zCWSlMb8xONqBYu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d44e33d0da154d40dfca62f286379fd46ebd0b63c7715639ddc76c55bd49be5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/58nFtaQbDnmeNRN4epdrTo.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/58nFtaQbDnmeNRN4epdrTo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79d3e8385faef40305f9bedb33e95a7d1fc24f6767fae353a24b3b5e9166949. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3VeRLKwbiZzp5i8UMGHoyN.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/3VeRLKwbiZzp5i8UMGHoyN.
Laid Back (with Black Smurf) - BERK Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0da5580f6db0235b578bb054ead57d11ff755007c5b90c2b87ab85b66445d5. 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/4jjPPxzqGBP1ZDlKeG76XL.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/4jjPPxzqGBP1ZDlKeG76XL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965af61eacd8df3511610cbe03c9ba0f5898e6655861e8e50ce84a4f2f89a8a4. 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/0lSKo9fdYoI8t089mlj8TS.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/0lSKo9fdYoI8t089mlj8TS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965af61eacd8df3511610cbe03c9ba0f5898e6655861e8e50ce84a4f2f89a8a4. 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/1ZFecaMOFCfDMKD6GYTD58.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/1ZFecaMOFCfDMKD6GYTD58.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49457b88eaeb10f27b75cfb786bcf41fd7879cc22e336f2d620a6766cbba371. 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/65APjJmwAiUkCiK5tc1e9T.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/65APjJmwAiUkCiK5tc1e9T.
{"copyright_id":"0xcdb5d99bb3bf7518709681baeb3ca7bde0d50cd3ebae5b3ea039dc55ef45174a","isrc":"QZAPK2000033","name":"Free Gucci","registered_at":"2026-06-04T12:59:14Z","spotify_id":"3IlEaRY4N9SCg9v9VJ1CYn","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb5d99bb3bf7518709681baeb3ca7bde0d50cd3ebae5b3ea039dc55ef45174a. 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/3IlEaRY4N9SCg9v9VJ1CYn.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/3IlEaRY4N9SCg9v9VJ1CYn.
{"copyright_id":"0x876d6d8015feecb75beb13cfe60704eb3adf89c258b57ca2059362580eab1f45","isrc":"QM8DG1600605","name":"Chilly Gentilly","registered_at":"2026-06-05T04:55:52Z","spotify_id":"2xlbU9gRBaBwSDGNhsM6oF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876d6d8015feecb75beb13cfe60704eb3adf89c258b57ca2059362580eab1f45. 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/2xlbU9gRBaBwSDGNhsM6oF.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/2xlbU9gRBaBwSDGNhsM6oF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e47f0663143b517899ed92faa65731b9d5de3a8c9e506cc1a1726d97be85b89. 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/0qXl0fuQ4CQ7GUmA7CPKe2.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/0qXl0fuQ4CQ7GUmA7CPKe2.
{"copyright_id":"0x336df8856b9256163b489d0d0f7c492a1151dfdecfab8f75d566b7b1944ebb4d","isrc":"QM8DG1600607","name":"It's About a 6 Hour Drive","registered_at":"2026-06-04T12:31:45Z","spotify_id":"7iYyCjeTlt68QmWdbGexJw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336df8856b9256163b489d0d0f7c492a1151dfdecfab8f75d566b7b1944ebb4d. 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/7iYyCjeTlt68QmWdbGexJw.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/7iYyCjeTlt68QmWdbGexJw.
Ruby Is Finally Satisfied with His Verse
{"copyright_id":"0x1d76b0f9dc85bd7ba999e21fbfc812e7a7cc77df5318fa45950bdb505f33e391","isrc":"QM8DG1600608","name":"Ruby Is Finally Satisfied with His Verse","registered_at":"2026-06-04T10:29:32Z","spotify_id":"3kiZ8cunUYbAldaVxQoKNA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d76b0f9dc85bd7ba999e21fbfc812e7a7cc77df5318fa45950bdb505f33e391. 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/3kiZ8cunUYbAldaVxQoKNA.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/3kiZ8cunUYbAldaVxQoKNA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9a938a3b6d40a405e3c0e38f535ef40fda41403a152c0c64c93812e16ae60a. 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/5yk3KALSi2BRpKtL0Q56Fw.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/5yk3KALSi2BRpKtL0Q56Fw.
Who's Pills Are These? (What Bag Were They In?)
{"copyright_id":"0xf4a2363467e6e4b07a345081331909349f411aaa295d48f2c80fd8d86bb90cc9","isrc":"QM8DG1600610","name":"Who's Pills Are These? (What Bag Were They In?)","registered_at":"2026-06-04T13:14:02Z","spotify_id":"5HJyKt1IuMKiv5V3ZdeMbF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a2363467e6e4b07a345081331909349f411aaa295d48f2c80fd8d86bb90cc9. 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/5HJyKt1IuMKiv5V3ZdeMbF.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/5HJyKt1IuMKiv5V3ZdeMbF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274204aedb29c13f08dfee69b4bf0abed5856b0b43b2e8058c8954cfa02423e0. 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/2HhLK0hZu9XjUuOrOZ4D5Y.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/2HhLK0hZu9XjUuOrOZ4D5Y.