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 0x6c6e9f091e02da42deab871f66b566b374c8be4f9dd5e4c149d4c36f9d949c03. 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/ca570d7e-1b61-4c68-87d5-01619dced2f9.json and https://artists.proofprofile.net/proofs/artist/ca570d7e-1b61-4c68-87d5-01619dced2f9.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 0x9320f8d36cfa7072b2624640ee8036cf4acb5b0233528668019f2ff9aaba1d9e. 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/2gtGauoJoTJHfwqbTMwS7o.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/2gtGauoJoTJHfwqbTMwS7o.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79825bf1a09fce99d288b142e565e3b3e90364ee4dc0e00bf7b0f59126ddb6be. 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/0oxONY6f5tWulwPrQfByhW.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/0oxONY6f5tWulwPrQfByhW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd42bd2c942dba05ebd32ed7fd49ab740fb35ce09f00d1c2ca2309669517690. 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/5QVKIE2fnDd5MdBelP4bUq.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/5QVKIE2fnDd5MdBelP4bUq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b3403210b88a9a25cd0933d80bb302bb06ea0df339f912d0cbf896835001da. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4mdBrpVHTbAGN9AYoQt0mG.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/4mdBrpVHTbAGN9AYoQt0mG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddf6291490f81695714f55d00e4d25b192bd5a5e42cac6c86076552944b84a4. 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/6qmQFnDDGP717YQ3sCujva.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/6qmQFnDDGP717YQ3sCujva.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb16df103e3d58f2ff0870df14a52da8c21af22acc60b0bf0a6cacb02c62fe7f. 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/73Rl4mGT39U269BpQCHfM2.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/73Rl4mGT39U269BpQCHfM2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b3403210b88a9a25cd0933d80bb302bb06ea0df339f912d0cbf896835001da. 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/1mjXcxFnGMMRHpxDp3EQsC.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/1mjXcxFnGMMRHpxDp3EQsC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf859829ef1d36ee12961cc91d0c18b5c6e40d78cf72057febe178fbb716829. 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/1ZjNWXOjHRtvgXAH7f1bFP.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/1ZjNWXOjHRtvgXAH7f1bFP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468cd38d91f5c8f0dc0c1c88eb93159a14fd7590d58a5aa607d69923ddc96863. 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/4FHB4PGsWfbXa4elve4cTd.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/4FHB4PGsWfbXa4elve4cTd.