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 0xae5d843d99f82c54b3b46ad366cd78605e999bb5321486c77c427aab278586e4. 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/08756c13-dcb1-481a-b1e8-685b4b392405.json and https://artists.proofprofile.net/proofs/artist/08756c13-dcb1-481a-b1e8-685b4b392405.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 0xc6be53f94afd3f01adf23a04c04cad93394df6574923f56110fafe31bf01b440. 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/3PjR63jqXRiBr7b68z8zPv.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/3PjR63jqXRiBr7b68z8zPv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b98edd22bb2f74369234753c491bef95b22a6380751e20ed9272112f4081a86. 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/3WLpFHlMC5LMQeuXiOUOIA.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/3WLpFHlMC5LMQeuXiOUOIA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec152a31aa61dcb7f1edf0567e42387ae7a99f36b9065321821ecc4ccc0a6c16. 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/4uI2lF9cPGqbYuRntzDcHN.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/4uI2lF9cPGqbYuRntzDcHN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c52db10b890f0f21a83dbb99d04e69f685bd6fc055b04b251dbaf22de45829. 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/4PIYD7zMwdkMerBC9pKZqk.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/4PIYD7zMwdkMerBC9pKZqk.
MoBlack Records presents: Afro House Collection (5 Years Label Anniversary Compilation)
Ithemba Lam (feat. Mpumi & Prince Benza)
{"copyright_id":"0x3a20b1e1f9078ca22157b1f088743c958960618bc1a7ad48a7f69ee509d32faf","isrc":"ZA82Y2000215","name":"Ithemba Lam (feat. Mpumi & Prince Benza)","registered_at":"2026-06-10T04:36:25Z","spotify_id":"53PTmgLS7RzqDnNAWlOcCH","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a20b1e1f9078ca22157b1f088743c958960618bc1a7ad48a7f69ee509d32faf. 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/53PTmgLS7RzqDnNAWlOcCH.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/53PTmgLS7RzqDnNAWlOcCH.
{"copyright_id":"0xe4be4c515a9f4106ff6ffebd3a3f7d879cedb199d7404f9ff8ff952bef28973b","isrc":"ZA56E2201538","name":"Dali Wami (feat. Mpumi)","registered_at":"2026-06-08T12:38:28Z","spotify_id":"7oS9oFNE6xe060W0ZdVSwX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4be4c515a9f4106ff6ffebd3a3f7d879cedb199d7404f9ff8ff952bef28973b. 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/7oS9oFNE6xe060W0ZdVSwX.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/7oS9oFNE6xe060W0ZdVSwX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa843f3c28b9b81c99db2fec2458e5c22501b5734a20012a7cdfa1f4a99bfef37. 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/7aeVNcP2AUmmnkGe838MPp.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/7aeVNcP2AUmmnkGe838MPp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e098751613e9c9679f2c2ed717fb9369701d7da910a8a8268a29b758876c9e3. 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/0eQEj1r1qU8kgmrHtCX7uI.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/0eQEj1r1qU8kgmrHtCX7uI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa742f4f5f7ba86092921c6e90dc0fde741ca195bd222bc96de7fcdf4b8d870ca. 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/5Sm6Z3D88RvXSP4Mm7qGgA.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/5Sm6Z3D88RvXSP4Mm7qGgA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19fbd3af5b4e7a4d37551cddbdca79a3ca8db9d0b9f1ee1c4b706ecf031c845. 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/1k4PQb5SBIbeY0xUWbQsyI.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/1k4PQb5SBIbeY0xUWbQsyI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b8786e775f39baebc27f0c208bf3b3d26ab4a2030db9667c58ff7db27ef8d2. 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/2Hn15IuQkfUjaeSKSsL353.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/2Hn15IuQkfUjaeSKSsL353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906bd52508c6206018161fad80879914c4677ca3f6b3fe9a4ac3a331da6558e7. 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/33eZ1Oimv0GG6pxepZKPJo.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/33eZ1Oimv0GG6pxepZKPJo.